CN108278335B - Multi-clutch module, clutch oil supply system and electric control hydraulic automatic transmission - Google Patents

Multi-clutch module, clutch oil supply system and electric control hydraulic automatic transmission Download PDF

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Publication number
CN108278335B
CN108278335B CN201810205601.4A CN201810205601A CN108278335B CN 108278335 B CN108278335 B CN 108278335B CN 201810205601 A CN201810205601 A CN 201810205601A CN 108278335 B CN108278335 B CN 108278335B
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CN
China
Prior art keywords
clutch
oil
piston
brake
balance
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Application number
CN201810205601.4A
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Chinese (zh)
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CN108278335A (en
Inventor
张新桂
余子林
周友
谢绪秒
刘学武
刘维
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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Priority to CN201810205601.4A priority Critical patent/CN108278335B/en
Publication of CN108278335A publication Critical patent/CN108278335A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
    • F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0473—Friction devices, e.g. clutches or brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H2003/445—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion without permanent connection between the input and the set of orbital gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2041—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with four engaging means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The invention provides a multi-clutch module, a clutch oil supply system and an electric control hydraulic automatic transmission. The multi-clutch module comprises a shell structure, an input shaft, a first planetary row structure, a second planetary row structure, a first clutch structure, a second clutch structure, a third clutch structure and a brake structure, wherein the input shaft, the first planetary row structure, the second planetary row structure, the first clutch structure, the second clutch structure, the third clutch structure and the brake structure are arranged in the shell structure; the first planetary gear set structure and the second planetary gear set structure are respectively arranged at two ends of the input shaft, the first clutch structure is connected to the second planetary gear set structure and the input shaft, the second clutch structure is connected to the second planetary gear set structure and the input shaft, the third clutch structure is connected to the first planetary gear set structure and the input shaft, and the brake structure is connected to the second planetary gear set structure and the shell structure; the first clutch structure is located radially outward of the input shaft, the second clutch structure and the third clutch structure are located side-by-side outside of the first clutch structure, and the brake structure is located outside of the second clutch structure and the third clutch structure. The multi-clutch module provided by the invention has a more compact structure, reduces occupied volume, simplifies the structure and reduces assembly requirements.

Description

Multi-clutch module, clutch oil supply system and electric control hydraulic automatic transmission
Technical Field
The invention relates to the technical field of automobile transmissions, in particular to a multi-clutch module, a clutch oil supply system and an electric control hydraulic automatic transmission.
Background
The electronic control hydraulic Automatic Transmission (AT) is formed by adding an electronic control system on the basis of the traditional hydraulic automatic transmission, and can select the optimal speed ratio for different loads and vehicle speeds so that the engine works AT the corresponding optimal rotation speed. All gear changes are done by the transmission itself, with the driver expressing only the intention of the accelerator pedal to change the vehicle speed and selecting the desired operating state by means of the selector lever. The electrically-controlled hydraulic automatic transmission generally realizes speed change through a planetary gear speed change mechanism comprising a plurality of clutches, brakes and planetary rows, and power of an engine is transmitted into the planetary gear speed change mechanism through a hydraulic torque converter for speed change and then is output. Thus, the volume, weight, efficiency and load carrying capacity of an automatic transmission are directly related to the planetary gear mechanism. Moreover, the more the number of gears of the automatic transmission power train, the lower the fuel consumption of the automobile, and the better the economy. However, as the number of gears increases, the number of clutches, brakes, and planetary gear sets increases, and it is more difficult to design a gear ratio that satisfies the theoretical stage ratio. In the prior art, a wet clutch and a brake of an electric control hydraulic automatic transmission generally adopt splines between a clutch hub and a steel sheet or a friction sheet to cooperatively transfer torque and rotational speed, the wet clutch and the brake have certain requirements on space arrangement, and for the automatic transmission with a plurality of clutch assemblies and brakes, the requirements on the whole space are increased, meanwhile, the clutch system is complex in composition, high in assembly requirement and high in cost. In addition, an automatic transmission having a plurality of clutch assemblies and brakes also requires a plurality of oil passages for supplying oil, which increases difficulty in structural arrangement and process implementation of an oil supply system, increases manufacturing costs, and the like.
Disclosure of Invention
Based on the above, in order to solve the above problems, the present invention provides a multi-clutch module, which has a more compact structure, reduces the occupied volume, simplifies the structure and reduces the assembly requirements.
The invention also provides a clutch oil supply system which can reduce the oil paths of the oil supply channels of the multi-clutch module, simplify the structure, and reduce the processing difficulty.
The invention also provides an electric control hydraulic automatic transmission, the multi-clutch module and the clutch oil supply system of which are relatively compact and simple in structure, more gear numbers can be realized, and good economical efficiency is realized.
The technical scheme is as follows:
a multi-clutch module comprises a shell structure, an input shaft, a first planetary row structure, a second planetary row structure, a first clutch structure, a second clutch structure, a third clutch structure and a brake structure, wherein the input shaft, the first planetary row structure, the second planetary row structure, the first clutch structure, the second clutch structure, the third clutch structure and the brake structure are arranged in the shell structure;
the first planetary gear set structure and the second planetary gear set structure are respectively arranged at two ends of the input shaft, the first clutch structure, the second clutch structure, the third clutch structure and the brake structure are arranged between the first planetary gear set structure and the second planetary gear set structure, the first clutch structure is connected to the second planetary gear set structure and the input shaft, the second clutch structure is connected to the second planetary gear set structure and the input shaft, the third clutch structure is connected to the first planetary gear set structure and the input shaft, and the brake structure is connected to the second planetary gear set structure and the shell structure;
The first clutch structure is located radially outward of the input shaft, the second clutch structure and the third clutch structure are located side by side outside of the first clutch structure, and the brake structure is located outside of the second clutch structure and the third clutch structure.
The following further technical scheme is described:
further, the first planet row structure comprises a first sun gear and a first planet carrier which are arranged at one end of the input shaft, a first planet wheel which is arranged on the first planet carrier and meshed with the first sun gear, and a first gear ring meshed with the first planet wheel;
the second planet row structure comprises a second sun gear and a second planet carrier which are arranged at the other end of the input shaft, a second planet gear which is arranged on the second planet carrier and meshed with the second sun gear, and a second gear ring meshed with the second planet gear;
the first clutch structure is connected to the input shaft and the second sun gear, the second clutch structure is connected to the input shaft and the second planet carrier, the third clutch structure is connected to the first gear ring and the second planet carrier, the brake structure is connected to the shell structure and the second sun gear or to the shell structure and the second planet carrier, and the second gear ring is arranged between the second clutch structure and the brake structure in a spaced mode.
Further, the first clutch structure, the second clutch structure, the third clutch structure, and the brake structure are all provided as a multi-plate wet clutch.
Further, the first clutch structure includes a first clutch housing disposed on the input shaft and the second sun gear, and a first clutch body and a first clutch piston structure disposed in the first clutch housing; the first clutch main body is connected to the first clutch housing, one end of the first clutch piston structure corresponds to the first clutch main body, and the other end of the first clutch piston structure is connected with the input shaft;
the second clutch structure comprises a second clutch housing arranged on the input shaft and the second planet carrier, a second clutch main body and a second clutch piston structure which are arranged in the second clutch housing, and the second clutch housing is positioned outside the first clutch housing; the second clutch main body is connected to the second clutch housing, one end of the second clutch piston structure corresponds to the second clutch main body, and the other end of the second clutch piston structure is connected with the second planet carrier;
The third clutch structure comprises a third clutch shell arranged on the first gear ring and the second planet carrier, a third clutch main body and a third clutch piston structure which are arranged in the third clutch shell, and the third clutch shell and the second clutch shell are arranged side by side; the third clutch main body is connected to the third clutch housing, one end of the third clutch piston structure corresponds to the third clutch main body, and the other end of the third clutch piston structure is connected with the second planet carrier;
the brake structure comprises a brake shell arranged on the shell structure and the second planetary gear set structure, and a brake main body and a brake piston structure which are arranged in the brake shell, wherein the brake shell is arranged on the outer sides of the second clutch shell and the third clutch shell through the second gear ring in a spacing way; and the brake main body is connected to the brake shell, one end of the brake piston structure corresponds to the brake main body, and the other end of the brake piston structure is connected with the shell structure.
Further, the first clutch housing includes a first clutch inner hub connected to the second sun gear, and a first clutch outer hub connected to the input shaft and located outside the first clutch inner hub; the first clutch main body comprises a plurality of first clutch friction plates arranged on the first clutch inner hub and a plurality of first clutch steel plates arranged on the first clutch outer hub, and the plurality of first clutch friction plates are arranged between the plurality of first clutch steel plates at intervals;
The second clutch housing comprises a second clutch inner hub connected with the input shaft and a second clutch outer hub connected with the second planet carrier and positioned outside the second clutch inner hub, and the second clutch inner hub is positioned outside or on the same side as the first clutch outer hub; the second clutch main body comprises a plurality of second clutch friction plates arranged on the second clutch inner hub and a plurality of second clutch steel plates arranged on the second clutch outer hub, and the plurality of second clutch friction plates are arranged between the plurality of second clutch steel plates at intervals;
the third clutch housing comprises a third clutch inner hub connected with the first gear ring and a third clutch outer hub connected with the second planet carrier and positioned outside the third clutch inner hub, and the third clutch inner hub is positioned outside or on the same side as the first clutch outer hub; the third clutch main body comprises a plurality of third clutch friction plates arranged on the third clutch inner hub and a plurality of third clutch steel plates arranged on the third clutch outer hub, and the third clutch friction plates are arranged among the third clutch steel plates at intervals;
The brake housing comprises a brake inner hub connected with the second planet carrier or the second sun gear and a brake outer hub connected with the housing structure and positioned outside the brake inner hub, and the brake inner hub is arranged outside the third clutch outer hub through the second gear ring in a spaced manner; the brake main body comprises a plurality of brake friction plates arranged on the brake inner hub and a plurality of brake steel plates arranged on the brake outer hub, and the brake friction plates are arranged between the brake steel plates at intervals.
Further, the first clutch outer hub is simultaneously set as the second clutch inner hub, the second clutch outer hub is simultaneously set as the third clutch outer hub, the first gear ring is simultaneously set as the third clutch inner hub, and the shell structure is simultaneously set as the brake outer hub.
Further, the first clutch piston structure comprises a first clutch piston rod body arranged between the first clutch inner hub and the first clutch outer hub, one end of the first clutch piston rod body corresponds to the first clutch main body, and the other end of the first clutch piston rod body is in sealing connection with the input shaft; the first clutch piston structure further comprises a first clutch piston cavity cover and a first clutch balance cavity cover which are connected to the input shaft and positioned between the first clutch inner hub and the first clutch outer hub, wherein the first clutch piston cavity cover and the first clutch balance cavity cover are respectively and hermetically connected to two sides of the first clutch piston rod body, and a first return spring group which is connected between the first clutch piston rod body and the first clutch balance cavity cover;
The second clutch piston structure comprises a second clutch piston rod body arranged between the second clutch inner hub and the second clutch outer hub, one end of the second clutch piston rod body corresponds to the second clutch main body, and the other end of the second clutch piston rod body is in sealing connection with the second planet carrier; the second clutch piston structure further comprises a second clutch piston cavity cover and a second clutch balance cavity cover which are connected to the second planet carrier and positioned between the second clutch inner hub and the second clutch outer hub, and the second clutch piston cavity cover and the second clutch balance cavity cover are respectively and hermetically connected to two sides of the second clutch piston rod body, and a second return spring group which is connected between the second clutch piston rod body and the second clutch balance cavity cover;
the third clutch piston structure comprises a third clutch piston rod body arranged between the third clutch inner hub and the third clutch outer hub, one end of the third clutch piston rod body penetrates through the second clutch main body to correspond to the third clutch main body, and the other end of the third clutch piston rod body is in sealing connection with the second planet carrier; the third clutch piston structure further comprises a third clutch piston cavity cover and a third clutch balance cavity cover which are connected to the second planet carrier and positioned between the third clutch inner hub and the third clutch outer hub, the third clutch piston cavity cover and the third clutch balance cavity cover are respectively and hermetically connected to two sides of the third clutch piston rod body, and a third return spring group which is connected between the third clutch piston rod body and the third clutch balance cavity cover;
The brake piston structure also comprises a brake piston cylinder connected to the shell structure, a brake piston rod arranged in the brake piston cylinder, and a brake return spring group arranged on the brake piston rod and connected with the shell structure, wherein one end of the brake piston rod is connected with the brake piston cylinder, and the other end of the brake piston rod corresponds to the brake main body.
Further, the third clutch balance chamber cover is simultaneously provided as the second clutch piston chamber cover, and the third clutch outer hub is simultaneously provided as the third clutch piston chamber cover.
Further, the second sun gear comprises a second sun shaft part arranged on the input shaft and a second sun gear body connected with the second sun shaft part, the second sun shaft part is close to the first planet row structure, and the second planet wheel is meshed with the second sun gear body;
the second planet carrier comprises a planet carrier axial part sleeved on the second sun shaft part and a planet carrier radial part vertically connected with the planet carrier axial part, the second planet wheel is arranged on the planet carrier radial part, and the first clutch structure, the second clutch structure and the third clutch structure are arranged between the first planet row structure and the planet carrier radial part; the first clutch outer hub is arranged close to the first planetary gear set structure, and the first clutch inner hub is connected to the end part of the second sun shaft part; the third clutch outer hub is connected to the second sun shaft portion, and the second clutch piston structure and the third clutch piston structure are both connected to the planet carrier axial portion.
In addition, the invention also provides a clutch oil supply system, which comprises the multi-clutch module and a clutch oil path structure arranged in the multi-clutch module;
the clutch oil path structure comprises a main oil inlet oil path structure, a first clutch oil path, a second clutch oil path, a third clutch oil path and a brake oil path, wherein the first clutch oil path, the second clutch oil path, the third clutch oil path and the brake oil path are respectively communicated with the main oil inlet oil path structure, the first clutch oil path corresponds to the first clutch structure, the second clutch oil path corresponds to the second clutch structure, the third clutch oil path corresponds to the third clutch structure, and the brake oil path corresponds to the brake structure.
Further, the main oil inlet oil path structure comprises a first main oil path, a second main oil path, a third main oil path and a fourth main oil path which are respectively axially arranged in the input shaft and are mutually independent;
the first clutch oil path comprises a first clutch piston cavity formed between the first clutch piston cavity cover and the first clutch piston rod body and a first clutch balance cavity formed between the first clutch balance cavity cover and the first clutch piston rod body, wherein the first clutch piston cavity is communicated with the first main oil duct, and the first clutch balance cavity is communicated with the fourth main oil duct;
The second clutch oil path comprises a second clutch piston cavity formed between the second clutch piston cavity cover and the second clutch piston rod body and a second clutch balance cavity formed between the second clutch balance cavity cover and the second clutch piston rod body, wherein the second clutch piston cavity is communicated with the second main oil duct, and the second clutch balance cavity is communicated with the fourth main oil duct;
the third clutch oil path comprises a third clutch piston cavity formed between the third clutch piston cavity cover and the third clutch piston rod body and a third clutch balance cavity formed between the third clutch balance cavity cover and the third clutch piston rod body, wherein the third clutch piston cavity is communicated with the third main oil duct, and the third clutch balance cavity is communicated with the fourth main oil duct.
Further, the main oil inlet oil path structure further comprises an oil path shaft connected with the input shaft, and a first oil inlet channel, a second oil inlet channel, a third oil inlet channel and a fourth oil inlet channel which are respectively arranged on the radial direction of the oil path shaft;
the novel oil inlet device is characterized by further comprising a first connecting oil duct, a second connecting oil duct, a third connecting oil duct and a fourth connecting oil duct which are respectively arranged on the radial direction of the input shaft, wherein the first oil inlet channel is communicated with the first main oil duct through the first connecting oil duct, the second oil inlet channel is communicated with the second main oil duct through the second connecting oil duct, the third oil inlet channel is communicated with the third main oil duct through the third connecting oil duct, and the fourth oil inlet channel is communicated with the fourth main oil duct through the fourth connecting oil duct.
Further, the main oil inlet oil path structure further comprises a first cylinder sleeve structure arranged on the oil path shaft and a plurality of first sealing rings arranged on the input shaft; the first cylinder sleeve structure corresponds to the input shaft, the first sealing ring is in close contact with the first cylinder sleeve structure, and the first connecting oil duct, the second connecting oil duct, the third connecting oil duct and the fourth connecting oil duct are respectively arranged between the two first sealing rings in a spaced mode;
the first cylinder sleeve structure is provided with a plurality of first cylinder sleeve oil passages, and the first oil inlet passages are correspondingly communicated with the first connecting oil passages, the second oil inlet passages are correspondingly communicated with the second connecting oil passages, the third oil inlet passages are correspondingly communicated with the third connecting oil passages, and the fourth oil inlet passages are correspondingly communicated with the fourth connecting oil passages through one first cylinder sleeve oil passage.
Further, the main oil inlet oil path structure further comprises a first piston oil path, a first balance oil path, a second piston oil path, a second balance oil path, a third piston oil path and a third balance oil path which are respectively arranged in the radial direction of the input shaft;
the first piston oil passage is communicated with the first clutch piston cavity and the first main oil passage, and the first balance oil passage is communicated with the first clutch balance cavity and the fourth main oil passage; the second piston oil passage is communicated with the second clutch piston cavity and the second main oil passage, and the second balance oil passage is communicated with the second clutch balance cavity and the fourth main oil passage; the third piston oil passage is communicated with the third clutch piston cavity and the third main oil passage, the third balance oil passage is communicated with the third clutch balance cavity and the fourth main oil passage, and the third balance oil passage is communicated with the second balance oil passage.
Further, the main oil inlet oil path structure further comprises a second piston auxiliary channel, a second balance auxiliary channel, a third piston auxiliary channel and a third balance auxiliary channel which are respectively arranged on the radial direction of the second sun wheel;
the second piston auxiliary channel is communicated with the second clutch piston cavity and the second piston oil duct, and the second balance auxiliary channel is communicated with the second clutch balance cavity and the second balance oil duct; the third piston auxiliary channel is communicated with the third clutch piston cavity and the third piston oil channel, the third balance auxiliary channel is communicated with the third clutch balance cavity and the third balance oil channel, the third balance auxiliary channel is communicated with the second balance auxiliary channel, and the third balance oil channel coincides with the second balance oil channel.
Further, the main oil inlet oil path structure further comprises a second piston transition channel, a second balance transition channel, a third piston transition channel and a third balance transition channel which are respectively arranged on the radial direction of the second planet carrier;
the second piston transition passage communicates with the second clutch piston chamber and a second piston auxiliary passage, and the second balance transition passage communicates with the second clutch balance chamber and the second balance auxiliary passage; the third piston transition passage is communicated with the third clutch piston cavity and the third piston auxiliary passage, and the third balance transition passage is communicated with the third clutch balance cavity and the third balance auxiliary passage; and the third balance transition channel is in communication with the second balance transition channel, the third balance auxiliary channel coinciding with the second balance auxiliary channel.
Further, the main oil inlet oil path structure further comprises a second cylinder sleeve structure arranged on the second sun gear and a plurality of second sealing rings arranged on the input shaft; the second cylinder sleeve structure corresponds to the input shaft, the second sealing ring is in close contact with the second cylinder sleeve structure, and the second piston auxiliary channel, the second balance auxiliary channel, the third piston auxiliary channel and the third balance auxiliary channel are respectively arranged between the two second sealing rings in a spaced mode;
the second cylinder sleeve structure is provided with a plurality of second cylinder sleeve oil passages, and the second piston auxiliary passages are correspondingly communicated with the second piston transition passages, the second balance auxiliary passages are correspondingly communicated with the second balance transition passages, the third piston auxiliary passages are correspondingly communicated with the third piston transition passages, and the third balance auxiliary passages are correspondingly communicated with the third balance transition passages through one second cylinder sleeve oil passage.
Further, the main oil inlet oil path structure further comprises a third cylinder sleeve structure arranged outside the second planet carrier and a plurality of third sealing rings arranged on the second sun gear; the third cylinder sleeve structure corresponds to the second sun wheel, the third sealing ring is in close contact with the third cylinder sleeve structure, and the second piston transition channel, the second balance transition channel, the third piston transition channel and the third balance transition channel are respectively arranged between the two second sealing rings in a spaced mode;
The third cylinder sleeve structure is provided with a plurality of third cylinder sleeve oil passages, and the second clutch piston cavity is correspondingly communicated with the second piston transition passage, the second clutch balance cavity is correspondingly communicated with the second balance transition passage, the third clutch piston cavity is correspondingly communicated with the third piston transition passage, and the third clutch balance cavity is correspondingly communicated with the third balance transition passage through one third cylinder sleeve oil passage.
Further, the main oil inlet oil path structure further comprises planet row lubrication channels which are respectively arranged on the radial direction of the input shaft, and the planet row lubrication channels are communicated with the fourth main oil path and the first planet row structure.
Further, the first main oil duct, the second main oil duct, the third main oil duct and the fourth main oil duct are all arranged to be blind holes with one end open and one end closed, and the open ends of the first main oil duct, the second main oil duct, the third main oil duct and the fourth main oil duct are all sealed through the interference of the sealing balls.
Further, the first clutch oil path comprises a first clutch lubrication cooling cavity formed between the first clutch outer hub and the first clutch inner hub, and a first inner hub lubrication cooling channel which is arranged on the first clutch inner hub and corresponds to the first clutch main body, and the first inner hub lubrication cooling channel is communicated with the fourth main oil channel through the first clutch lubrication cooling cavity;
The second clutch oil way comprises a second inner hub lubrication cooling channel which is arranged on the second clutch inner hub and corresponds to the second clutch main body, and a first outer hub lubrication cooling channel which is arranged on the first clutch outer hub, and the second inner hub lubrication cooling channel is communicated with the fourth main oil duct through the first outer hub lubrication cooling channel, the first inner hub lubrication cooling channel and the first clutch lubrication cooling cavity;
the third clutch oil path comprises a third inner hub lubrication cooling channel which is arranged on the third clutch inner hub and corresponds to the third clutch main body, and the third inner hub lubrication cooling channel is communicated with the fourth main oil channel through the first outer hub lubrication cooling channel, the first inner hub lubrication cooling channel and the first clutch lubrication cooling cavity.
Further, the main oil inlet oil path structure further comprises a fifth main oil path arranged on the shell structure;
the brake oil path comprises a brake piston cavity formed between the brake piston cylinder and the brake piston rod, a brake lubrication cooling channel which is arranged on the brake inner hub and corresponds to the brake main body, a second outer hub lubrication cooling channel which is arranged on the second clutch outer hub, a third outer hub lubrication cooling channel which is arranged on the third clutch outer hub, and a gear ring lubrication cooling channel which is arranged on the second gear ring; and the brake piston cavity is communicated with the fifth main oil duct, and the brake lubrication cooling channel is communicated with the third inner hub lubrication cooling channel and the second inner hub lubrication cooling channel through the gear ring lubrication cooling channel, the second outer hub lubrication cooling channel and the third outer hub lubrication cooling channel.
In addition, the invention also provides an electric control hydraulic type automatic transmission, which comprises the clutch oil supply system.
The invention has the following outstanding advantages:
1. the multi-clutch module realizes the modularized integrated design of three wet clutch structures and one brake structure through the reasonable combination arrangement of the inner nested nest structure and the outer nested nest structure, so that the occupied axial dimension is shorter, the structure is compact, and the whole machine arrangement of the electric control hydraulic automatic transmission is more facilitated;
2. the multi-clutch module is provided with a novel clutch oil supply system, and can respectively realize the oil supply of a piston cavity, a balance cavity and lubrication cooling of three clutch structures and one brake structure;
3. the multi-clutch module has short axial dimension and compact overall structure, so that the multi-clutch module can be flexibly applied to a six-gear electric control hydraulic automatic transmission; in addition, on the basis of the multi-clutch module, by adding a planetary row at the front end or the rear end of the multi-clutch module and adding a brake or a one-way clutch at the radial outer end of the multi-clutch module, the multi-clutch module can be applied to more gears such as eight-gear or nine-gear electric control hydraulic automatic transmissions;
4. the multi-clutch module structure is more compact, which is more beneficial to shortening the axial space, reducing the weight and reducing the cost;
5. The clutch oil supply system of the multi-clutch module fully utilizes the structural advantages of parts of the multi-clutch module, arranges the piston cavity, the balance cavity and different oil channels required by lubrication and cooling, does not need to add an additional oil channel part structure, and reduces the manufacturing cost;
6. the clutch oil supply system of the multi-clutch module utilizes an input shaft, and a plurality of axial oil channels and radial oil channels are arranged to form a plurality of mutually independent oil channels, so that the requirement of oil supply of the multi-clutch module on the multi-channel oil channels is met, the input shaft is an elongated shaft of a common type in a vehicle transmission, the structure is easy to realize, the process is simple, and the manufacturing cost is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a multi-clutch module according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a clutch oil supply system according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an input shaft of a clutch oil supply system according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of an input shaft of a clutch oil supply system according to an embodiment of the invention.
Reference numerals illustrate:
1-first clutch structure, 11-first clutch friction plate, 12-first clutch steel plate, 13-first clutch end steel plate, 14-first clutch snap ring, 15-first clutch piston rod, 16-first clutch piston cavity cover, 17-first return spring set, 18-first clutch balance cavity cover, 19-first clutch cavity cover snap ring, 20-first clutch piston seal ring, 21-first clutch inner hub, 22-first clutch outer hub (second clutch inner hub), 3-second clutch structure, 31-second clutch friction plate, 32-second clutch steel plate, 33-second clutch end steel plate, 34-second clutch snap ring, 35-second clutch piston rod, 36-second return spring group, 37-second clutch balance cavity cover, 38-second clutch cavity cover snap ring, 39-second clutch outer hub (third clutch outer hub), 40-oil passage shaft, 41-first cylinder sleeve structure, 5-third clutch structure, 51-third clutch friction plate, 52-third clutch steel plate, 53-third clutch end steel plate, 54-third clutch snap ring, 55-third clutch piston rod body, 56-third return spring group, 57-third clutch balance cavity cover, 58-third clutch inner hub (first ring gear), 6-brake structure, 61-brake friction plate, 62-brake steel plate, 63-brake end steel plate, 64-brake steel plate snap ring, 65-brake piston rod, 66-brake piston cylinder, 67-brake piston cylinder snap ring, 68-brake return spring set, 69-brake inner hub, 7-first planetary gear row configuration, 71-first sun gear, 72-first carrier, 73-first gear shim, 74-first gear needle, 75-first planet, 8-second planetary gear row configuration, 81-second sun gear, 82-second planet, 83-second gear needle, 84-second gear shim, 85-second carrier, 86-second ring gear, 9-input shaft, 10-housing configuration, (91, 92) -first bearing, 93-second bearing, 94-third bearing, 95-third seal ring, 96-second seal ring, 97-third cylinder sleeve configuration, 98-second cylinder sleeve configuration, 99-first seal ring, (101, 102,103, 104) -seal ball, f 1-first, f 2-second oil gallery, f 3-third, f 4-fourth oil gallery, 1 a-first balance clutch cavity 1 b-second balance clutch cavity, 3 b-second balance clutch cavity, 8a, 8-second balance piston cavity, 8 a-second balance piston cavity, 3 b-balance piston cavity, 8-second balance piston cavity, 8 a-balance piston cavity, 8-second balance piston cavity, 8-balance piston cavity, 3 b-balance piston cavity, 8-second balance piston cavity, 8-balance piston cavity, 8 h-third piston transition passage, 8 f-third balance transition passage, 8 g-fourth auxiliary transition passage, 9 c-first main oil passage, 9 h-second main oil passage, 9 j-third main oil passage, 9 a-fourth main oil passage, 9 m-first connecting oil passage, 9 n-second connecting oil passage, 9 p-third connecting oil passage, 9 r-fourth connecting oil passage, 9 d-first piston oil passage, 9 e-first balance oil passage, 9 i-second piston oil passage, 9 g-second balance Heng Youdao (third balance oil passage), 9 k-third piston oil passage, 10 a-fifth main oil passage, 21 a-first inner hub lubricating and cooling passage, 22 a-second inner hub lubricating and cooling passage (first outer hub lubricating and cooling passage), 39 a-third outer hub lubricating and cooling passage, 39 b-second outer hub lubricating and cooling passage, 40 b-first oil inlet passage, 40 c-second oil inlet passage, 40 d-third oil inlet passage, 40 a-fourth oil inlet sleeve 41 a-fourth oil inlet passage, (41 b,41c, 86 a) -third cylinder sleeve 41b, 58 a-third oil passage, (97 a) -third hub lubricating and cooling passage, (97 a-second inner hub lubricating and (first outer hub lubricating and cooling passage), and (third hub lubricating and 35 b) -third oil passage, (98 a-third oil passage, 35 a-third brake cylinder 35 b-inner lubricating and (third oil passage).
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
As shown in fig. 1, the present invention proposes a multi-clutch module, which includes a housing structure 10, an input shaft 9, a first planetary gear set 7, a second planetary gear set 8, a first clutch structure 1, a second clutch structure 3, a third clutch structure 5 and a brake structure 6, which are disposed in the housing structure 10. The multi-clutch module formed by the clutch structures, the brake structures and the planet row structures can realize the switching of different gears through the connection and disconnection of different clutch structures. Moreover, through setting up a plurality of clutch structures, stopper structure and planet row structure, can increase the gear number for the fuel consumption of car is lower, and the economic nature is better.
The first planetary gear set 7 and the second planetary gear set 8 are disposed at two ends of the input shaft 9, the first clutch structure 1, the second clutch structure 3, the third clutch structure 5 and the brake structure 6 are disposed between the first planetary gear set 7 and the second planetary gear set 8, the first clutch structure 1 is connected to the second planetary gear set 8 and the input shaft 9, the second clutch structure 3 is connected to the second planetary gear set 8 and the input shaft 9, the third clutch structure 5 is connected to the first planetary gear set 7 and the input shaft 9, and the brake structure 6 is connected to the second planetary gear set 8 and the housing structure 10. In this way, the plurality of clutch structures and brake structures are conveniently connected with the planetary gear set structures on two sides, and the plurality of clutch structures and brake structures are conveniently arranged in a concentrated manner. The first clutch structure 1 is located radially outside the input shaft 9, the second clutch structure 3 and the third clutch structure 5 are located side by side outside the first clutch structure 1, and the brake structure 6 is located outside the second clutch structure 3 and the third clutch structure 5. In this way, the three clutch structures and one brake structure can be integrated and designed together by adopting nested structures which are nested inside and outside, namely, a plurality of clutch structures and brake structures are more likely to be relatively concentrated, so that the clutch structures and brake structures can be fully nested, and the clutch structures and brake structures are arranged to realize high integration. Therefore, the occupied axial size is not larger than the occupied size when the two clutch structures are independently and axially arranged, the axial space is effectively shortened, the axial structure is more compact, and the complete machine arrangement of the transmission on the front-end front-drive transverse vehicle is more facilitated.
Further, the first planetary gear set 7 includes a first sun gear 71 and a first carrier 72 disposed at one end of the input shaft 9, a first planet gear 75 disposed on the first carrier 72 and meshed with the first sun gear 71, and a first ring gear 58 meshed with the first planet gear 75. The first sun gear 71 may drive the first planet gears 75 to rotate, thereby driving the first ring gear 58 to rotate. The first planetary gear set 7 further includes a first gear spacer 73 disposed between the first carrier 72 and the first planetary gear 75 in the radial direction for filling the radial gap therebetween. The first planet row structure 7 further comprises a first gear needle 74 arranged between the first planet carrier 72 and the first planet carrier 75 in the axial direction, which on the one hand can fill the axial gap between the first planet carrier 72 and the first planet carrier 75, and on the other hand can facilitate the relative rotation of the first planet carrier 72 and the first planet carrier 75. In addition, the first planet row structure 7 further comprises first bearings (91, 92) arranged between the first sun gear 71 and the first gear ring and between the first gear ring and the first clutch structure, so that relative rotation between the first sun gear 71 and the first gear ring and between the first gear ring and the first clutch structure can be ensured.
The second planetary gear set 8 further includes a second sun gear 81 and a second planet carrier 85 provided at the other end of the input shaft 9, a second planet gear 82 provided on the second planet carrier 85 and meshed with the second sun gear 81, and a second ring gear 86 meshed with the second planet gear 82. The second sun gear 81 may drive the second planet gears 82 to rotate, thereby driving the second ring gear 86 to rotate. Moreover, the second planet carrier arrangement 8 further comprises a second gear shim 84 arranged radially between the second planet carrier 85 and the second planet gears 82 for filling the radial gap between the two. The second planetary gear set 8 further includes a second gear needle 83 disposed between the second planet carrier 85 and the second planet gear 82 in an axial direction, so that, on one hand, an axial gap therebetween can be filled, and, on the other hand, relative rotation between the two is facilitated. In addition, a second bearing 93 is further arranged between the second planet carrier 85 and the second sun gear 81, so that the two can rotate relatively; a third bearing 94 is provided between the second sun gear 81 and the input shaft 9, which also ensures that the two can rotate relative to each other.
Moreover, the first clutch structure 1 is connected to the input shaft 9 and the second sun gear 81, and the first clutch structure 1 can realize the combination and separation of the input shaft 9 and the second sun gear 81, so that a gear shifting mode can be realized; the second clutch structure 5 is connected to the input shaft 9 and the second planet carrier 85, and the combination and separation of the input shaft 9 and the second planet carrier 85 can be realized through the second clutch structure 3, so that another gear shifting mode can be realized; the third clutch structure 5 is connected to the first gear ring 58 and the second planet carrier 85, and the combination and the separation of the first gear ring 58 and the second planet carrier 85 can be realized through the third clutch structure 5, so that another gear shifting mode can be realized; the brake structure 6 is connected to the housing structure 10 and the second sun gear 81, or to the housing structure 10 and the second carrier 85, and the second ring gear 86 is provided between the second clutch structure 3 and the brake structure 6, so that the brake structure 6 can brake the second sun gear 81 or the second carrier 85.
The first clutch structure 1, the second clutch structure 3, the third clutch structure 5, and the brake structure may be provided as a multi-plate wet clutch. Further, the first clutch structure 1 includes a first clutch housing provided on the input shaft 9 and the second sun gear 81, and a first clutch body and a first clutch piston structure provided in the first clutch housing; and the first clutch main body is connected to the first clutch housing, one end of the first clutch piston structure corresponds to the first clutch main body, and the other end is connected with the input shaft 9. The first clutch piston structure can drive the first clutch body and the first clutch housing to be engaged with or disengaged from each other, thereby engaging or disengaging the input shaft 9 and the second sun gear 81 connected to the first clutch housing.
Further, the first clutch housing includes a first clutch inner hub 21 connected to the second sun gear 81, and a first clutch outer hub 22 connected to the input shaft 9 and located outside (i.e., on a side away from the radial direction of the input shaft) the first clutch inner hub 21; the first clutch body includes a plurality of first clutch friction plates 11 provided on a first clutch inner hub 21, and a plurality of first clutch steel plates 12 provided on a first clutch outer hub 22, and the plurality of first clutch friction plates 11 are provided between the plurality of first clutch steel plates 12 at intervals. The first clutch piston structure can drive the first clutch friction plate 11 to clamp with the first clutch steel plate 12, so that the whole first clutch body can be clamped into a whole, and the first clutch inner hub 21 connected with the first clutch friction plate 11 and the first clutch outer hub 22 connected with the first clutch steel plate 12 are connected together, so that the input shaft 9 and the second sun gear 81 are connected together. In addition, the first clutch body further includes a first clutch end steel plate 13 disposed at the outermost side (that is, the side away from the first clutch piston structure), and a first clutch snap ring 14 disposed between the first clutch end steel plate 13 and the first clutch outer hub 22, so as to facilitate clamping of the entire first clutch body. The first clutch inner hub 21 and the second sun gear 81 may be fixedly connected by welding, the first clutch outer hub 22 and the input shaft 9 may be fixedly connected by welding, the first clutch friction plate 11 and the first clutch inner hub 21 may be connected by a clearance fit spline, and the first clutch steel plate 12 and the first clutch end steel plate 13 may be connected by a clearance fit spline to the first clutch outer hub 22.
Moreover, the first clutch piston structure includes a first clutch piston rod body 15 disposed between the first clutch inner hub 21 and the first clutch outer hub 22, and one end of the first clutch piston rod body 15 corresponds to the first clutch body, and the other end is in sealing connection with the input shaft 9 (i.e., a first clutch piston seal ring 20 is disposed between the input shaft 9 and the first clutch piston rod body 15 to perform sealing connection so that the first clutch piston rod 15 can maintain sealing with the input shaft 9 while also sliding along the surface of the input shaft 9), so that the first clutch piston rod body 15 can move to both sides, thereby clamping (i.e., coupling) or releasing (i.e., uncoupling) the first clutch body. The first clutch piston structure further includes a first clutch piston chamber cover 16 (one end of the first clutch piston chamber cover 16 is directly fixed to the input shaft 9) and a first clutch balance chamber cover 18 (the first clutch piston chamber cover is clamped to the input shaft 9 by a first clutch chamber cover clamping ring 19) connected to the input shaft 9 and located between the first clutch inner hub 21 and the first clutch outer hub 22, and the first clutch piston chamber cover 16 and the first clutch balance chamber cover 18 are respectively connected in a sealing manner (i.e. connected in a sealing manner by a sealing ring or a sealing gasket) and are not fixed to both sides of the first clutch piston rod body 15, and a first return spring group 17 connected between the first clutch piston rod body 15 and the first clutch balance chamber cover 18. The first clutch piston rod body 15 is movable in a direction approaching or separating the first clutch body by hydraulic force, so that the first clutch body is engaged or disengaged. The first clutch piston rod body 15 is supported by the first clutch piston chamber cover 16 and the first clutch balance chamber cover 18 from both sides (but the first clutch piston rod body 15 is not fixed), so that the first clutch piston rod body 15 is stable and reliable, and can move freely.
The second clutch structure 3 includes a second clutch housing provided on the input shaft 9 and the second carrier 85, and a second clutch body and a second clutch piston structure provided in the second clutch housing, and the second clutch housing is located outside the first clutch housing (i.e., on a side away from the radial direction of the input shaft 9); and the second clutch body is connected to the second clutch housing, one end of the second clutch piston structure corresponds to the second clutch body, and the other end is connected to the second planet carrier 85. The second clutch body and the second clutch housing can be driven to be coupled to or decoupled from each other by the second clutch piston structure, thereby coupling or decoupling the input shaft 9 and the second carrier 85 connected to the second clutch housing.
Moreover, the second clutch housing includes a second clutch inner hub connected to the input shaft 9, and a second clutch outer hub connected to the second carrier 85 and located outside the second clutch inner hub, the second clutch inner hub being located outside or on the same side as the first clutch outer hub 22; the second clutch body includes a plurality of second clutch friction plates 31 provided on the second clutch inner hub, and a plurality of second clutch steel plates 32 provided on the second clutch outer hub, and the plurality of second clutch friction plates 31 are disposed between the plurality of second clutch steel plates 32 at intervals. The second clutch piston structure can drive the second clutch friction plate 31 to clamp with the second clutch steel plate 32, so that the whole second clutch body can be clamped into a whole, and the second clutch inner hub connected with the second clutch friction plate 31 and the second clutch outer hub connected with the second clutch steel plate 32 are connected together, so that the input shaft 9 and the second planet carrier 85 are connected together. In addition, the second clutch body further includes a second clutch end steel plate 33 disposed at the outermost side (that is, the side away from the second clutch piston structure), and a second clutch snap ring 34 disposed between the second clutch end steel plate 33 and the second clutch outer hub, so as to facilitate clamping of the entire second clutch body. The second clutch outer hub 39 and the second carrier 85 are fixedly connected by welding, the second clutch friction plate 31 and the first clutch outer hub 22 are connected by clearance fit splines, and the second clutch steel plate 32 and the second clutch end steel plate 33 are connected by clearance fit splines to the second clutch outer hub 39.
The second clutch piston structure includes a second clutch piston rod body 35 disposed between the second clutch inner hub and the second clutch outer hub 39, one end of the second clutch piston rod body 35 corresponds to the second clutch body, and the other end of the second clutch piston rod body is in sealing connection with the second planet carrier 85 (i.e., a second clutch piston seal ring is disposed between the second planet carrier 85 and the second clutch piston rod body 35 to perform sealing connection, so that the second clutch piston rod 35 can keep sealing with the second planet carrier 85, and can slide along the surface of the second planet carrier 85), so that the second clutch piston rod body 35 can move to both sides, thereby clamping (i.e., combining) or releasing (i.e., separating) the second clutch body. The second clutch piston structure further includes a second clutch piston chamber cover (one end of the second clutch piston chamber cover may be directly fixed to the second planet carrier 85) and a second clutch balance chamber cover 37 (clamped to the second planet carrier 85 by a second clutch chamber cover clamping ring 38) connected to the second planet carrier 85 and located between the second clutch inner hub and the second clutch outer hub, and the second clutch piston chamber cover and the second clutch balance chamber cover 37 are respectively connected in a sealing manner (i.e. connected in a sealing manner by a sealing ring or a sealing gasket) and are not fixed to both sides of the second clutch piston rod 35, and a second return spring set 36 connected between the second clutch piston rod 35 and the second clutch balance chamber cover 37. The second clutch piston rod body 35 is movable in a direction approaching or separating from the second clutch body by hydraulic pressure to engage or disengage the second clutch body. The second clutch piston rod body 35 is supported by the second clutch piston chamber cover and the second clutch balance chamber cover 37 from both sides (but the second clutch piston rod body 35 is not fixed), so that the second clutch piston rod body 35 is stable and reliable, and can move freely.
Further, the third clutch structure 5 described above includes a third clutch housing provided on the first ring gear 58 and the second carrier 85, and a third clutch body and a third clutch piston structure provided in the third clutch housing. And the third clutch body is connected to the third clutch housing, and one end of the third clutch piston structure corresponds to the third clutch body, and the other end is connected to the second planet carrier 85. The third clutch body and the third clutch housing can be driven to be engaged or disengaged by the third clutch piston structure, thereby effecting engagement or disengagement of the first ring gear 58 and the second carrier 85 connected to the third clutch housing. Moreover, the third clutch housing and the second clutch housing are arranged side by side, so that the second clutch structure and the third clutch structure are arranged side by side in the axial direction of the input shaft 9, and thus the radial space and the axial space of the input shaft 9 can be reasonably utilized, the arrangement of the three clutch structures and one brake structure is compact and reasonable, and the radial occupied space cannot be excessively large.
Further, the third clutch housing includes a third clutch inner hub connected to the first ring gear 58, and a third clutch outer hub connected to the second carrier 85 and located outside the third clutch inner hub (refer to a side away from the radial direction of the input shaft 9), the third clutch inner hub being located outside or on the same side as the first clutch outer hub; the third clutch body includes a plurality of third clutch friction plates 51 provided on the third clutch inner hub, and a plurality of third clutch steel plates 52 provided on the third clutch outer hub, and the plurality of third clutch friction plates 51 are disposed between the plurality of third clutch steel plates 52 at intervals. The third clutch piston structure can drive the third clutch friction plate 51 to clamp with the third clutch steel plate 52, so that the whole third clutch body can be clamped as a whole, thereby connecting the third clutch inner hub connected with the third clutch friction plate 51 and the third clutch outer hub connected with the third clutch steel plate 52, and thereby connecting the first ring gear 58 and the second carrier 85. In addition, the third clutch body further includes a third clutch end steel plate 53 disposed at the outermost side (i.e., the side far from the third clutch piston structure), and a third clutch snap ring 54 disposed between the third clutch end steel plate 53 and the third clutch outer hub, so as to facilitate clamping of the entire third clutch body. The third clutch friction plate 51 is connected to the third clutch inner hub 58 by a clearance fit spline, and the third clutch steel plate 52 and the third clutch end steel plate 53 are connected to the third clutch outer hub by a clearance fit spline.
The third clutch piston structure includes a third clutch piston rod body 55 disposed between the third clutch inner hub and the third clutch outer hub, one end of the third clutch piston rod body 55 passes through the second clutch body (may refer to a region where the second clutch body is located, rather than merely passing through the second clutch body itself), so that the third clutch piston structure and the second clutch piston structure may be disposed on the same side, so that the third clutch piston structure and the second clutch piston structure may be disposed integrally, and the occupied space may be further reduced), and the other end of the third clutch piston rod body corresponds to the third clutch body, and is in sealing connection with the second planet carrier 85 (i.e., a third clutch piston sealing ring is disposed between the second planet carrier 85 and the third clutch piston rod body 55 to enable the third clutch piston rod body 55 to maintain a sealing between the second planet carrier 85, and also enable the third clutch piston rod body 55 to slide along the surface of the second planet carrier 85, so that the third clutch piston rod body 55 may be moved to both sides, thereby clamping (i.e., coupling or uncoupling) the third clutch body. The third clutch piston structure further includes a third clutch piston chamber cover (one end of the third clutch piston chamber cover may be directly fixed to the second planet carrier 85) and a third clutch balance chamber cover 57 (one end of the third clutch balance chamber cover may also be directly fixed to the second planet carrier 85 or clamped to the second planet carrier 85 by a third clutch chamber cover snap ring) connected to the second planet carrier 85 and between the third clutch inner hub and the third clutch outer hub, and the third clutch piston chamber cover and the third clutch balance chamber cover are respectively and hermetically connected (i.e. hermetically connected by a seal ring or a gasket, and not fixedly fastened) to both sides of the third clutch piston rod 55, and a third return spring set 56 connected between the third clutch piston rod 55 and the third clutch balance chamber cover 57. Similarly, the third clutch piston rod 55 is movable toward and away from the third clutch body under hydraulic pressure to engage and disengage the third clutch body. The third clutch piston rod body 55 is supported from both sides by the third clutch piston chamber cover and the third clutch balance chamber cover 57 (but the third clutch piston rod body 55 is not fixed) so that the third clutch piston rod body 55 is stable and reliable and can move freely.
In addition, the brake structure 6 includes a brake housing provided on the housing structure 10 and the second planetary gear set structure 8, and a brake main body and a brake piston structure provided in the brake housing, the brake housing being provided outside the second clutch housing and the third clutch housing through a second ring gear; and the brake main body is connected to the brake housing, one end of the brake piston structure corresponds to the brake main body, and the other end is connected with the housing structure 10. The brake body and the brake housing can be driven to engage or disengage by means of the brake piston structure, so that the housing structure 10 connected to the brake housing and the second planetary gear set structure 8 are engaged or disengaged.
Further, the brake housing includes a brake inner hub connected to the second carrier 85 or the second sun gear 81, and a brake outer hub connected to the housing structure 10 and located outside the brake inner hub (i.e., on a side away from the radial direction of the input shaft), the brake inner hub being spaced outside the third clutch outer hub by the second ring gear; the brake main body includes a plurality of brake friction plates 61 provided on the brake inner hub, and a plurality of brake steel plates 62 provided on the brake outer hub, and the plurality of brake friction plates 61 are provided between the plurality of brake steel plates 62 at intervals. The brake piston structure can drive the brake friction plate 61 to clamp with the brake steel plate 62, and clamp the whole brake body as one body, thereby connecting the brake inner hub connected with the brake friction plate 61 and the brake outer hub connected with the brake steel plate 62, thereby connecting the second carrier 85 (or the second sun gear 81) and the housing structure 10. In addition, the brake body further includes a brake end steel plate 63 disposed at the outermost side (refer to the side away from the brake piston structure), and a brake snap ring 64 disposed between the brake end steel plate 63 and the brake outer hub, facilitating clamping of the entire brake body. Further, the brake pads 61 are splined to the brake inner hub 69 via a clearance fit, and the brake pads 62 and brake tip pads 63 are splined to the housing structure 10 via a clearance fit.
The brake piston structure further includes a brake piston cylinder 66 connected to the housing structure 10, a brake piston rod 65 provided in the brake piston cylinder 66, and a brake return spring group 67 provided on the brake piston rod 65 and connected to the housing structure 10, one end of the brake piston rod 65 being slidably connected to the brake piston cylinder 66, and the other end corresponding to the brake main body. The brake piston rod body 65 is slidable left and right in the brake piston cylinder 66 by hydraulic pressure, thereby being moved in a direction approaching or separating the brake main body, and engaging or disengaging the brake main body.
The first clutch outer hub is simultaneously arranged as the second clutch inner hub, so that the longitudinal integrated arrangement of the first clutch housing and the first clutch structure and the second clutch housing and the second clutch structure can be realized; the second clutch outer hub is simultaneously arranged as a third clutch outer hub, so that the transverse integrated arrangement of the second clutch housing and the second clutch structure and the third clutch housing and the third clutch structure can be realized; the first gear ring is simultaneously arranged as a third clutch inner hub, so that the transverse integrated arrangement of the third clutch shell, the third clutch structure, the first gear ring and the first planet row structure can be realized; moreover, the shell structure is simultaneously arranged as the outer hub of the brake, so that the brake shell and the integrated arrangement of the brake structure and the shell structure can be realized. In addition, the third clutch balance cavity cover is simultaneously arranged as a second clutch piston cavity cover, and the third clutch outer hub is simultaneously arranged as a third clutch piston cavity cover, so that the second clutch piston structure and the second clutch structure can be integrated with the third clutch piston structure and the third clutch structure. Therefore, the first clutch structure, the second clutch structure, the third clutch structure and the brake structure can be integrally arranged in the radial direction and the axial direction of the input shaft, so that the whole structure is compact and simple.
The second sun gear 81 includes a second sun shaft portion provided on the input shaft 9, and a second sun gear body connected to the second sun shaft portion, the second sun shaft portion being adjacent to the first planetary gear arrangement 7, the second planetary gear being in mesh with the second sun gear body; the second planet carrier 85 includes a planet carrier axial portion sleeved on the second sun shaft portion, and a planet carrier radial portion connected perpendicularly to the planet carrier axial portion, the second planet wheel is disposed on the planet carrier radial portion, and the first clutch structure, the second clutch structure, and the third clutch structure are disposed between the first planet row structure and the planet carrier radial portion; the first clutch outer hub is arranged close to the first planet row structure, and the first clutch inner hub is connected to the end part of the second sun shaft part; the third clutch outer hub is connected to the second sun shaft portion, and the second clutch piston structure and the third clutch piston structure are both connected to the planet carrier axial portion. In this way, the second clutch piston structure and the third clutch piston structure are arranged in the radial direction and the axial direction of the second planet carrier 85, so that the second clutch piston structure and the third clutch piston structure are arranged more compactly and the integration level is higher.
In addition, as shown in fig. 1 to 2, the present invention also proposes a clutch oil supply system including the multi-clutch module as described above, and a clutch oil path structure provided in the multi-clutch module. Oil is supplied to a plurality of clutch structures and brake structures in the multi-clutch module through the clutch oil path structure, so that normal operation of the multi-clutch module is ensured. The clutch oil path structure comprises a main oil inlet path structure, and a first clutch oil path, a second clutch oil path, a third clutch oil path and a brake oil path which are respectively communicated with the main oil inlet path structure. The first clutch oil way corresponds to the first clutch structure 1 and supplies oil for the first clutch structure 1; the second clutch oil way corresponds to the second clutch structure 3 and supplies oil for the second clutch structure 1; the third clutch oil way corresponds to the third clutch structure 5 and supplies oil to the third clutch structure 5; the brake oil circuit corresponds to the brake structure 6 and supplies oil to the brake structure 6. Thus, a first oil passage f1 for providing the first clutch structure 1 with the oil of the pressure required for operation, a second oil passage f2 for providing the second clutch structure 3 with the oil of the pressure required for operation, a third oil passage f3 for providing the third clutch structure 5 with the oil of the pressure required for operation, and a fourth oil passage f4 for providing the multi-clutch module with the cooling oil of the pressure required for operation are formed, the oil being supplied by an oil supply device such as an oil pump of an automatic transmission.
As shown in fig. 3 to 4, the main oil feed passage structure includes a first main oil passage 9c, a second main oil passage 9h, a third main oil passage 9j, and a fourth main oil passage 9a that are axially opened in the input shaft 9, respectively, and are independent of each other. The main oil inlet path structure further comprises an oil passage shaft 40 connected with the input shaft 9, and a first oil inlet passage 40b, a second oil inlet passage 40c, a third oil inlet passage 40d and a fourth oil inlet passage 40a which are respectively arranged on the radial direction of the oil passage shaft 40; the novel oil-filled engine further comprises a first connecting oil duct 9m, a second connecting oil duct 9n, a third connecting oil duct 9p and a fourth connecting oil duct 9r which are respectively arranged on the radial direction of the input shaft 9, wherein the first oil inlet channel 40b is communicated with the first main oil duct 9c through the first connecting oil duct 9m, the second oil inlet channel 40c is communicated with the second main oil duct through the second connecting oil duct, the third oil inlet channel is communicated with the third main oil duct 9j through the third connecting oil duct 9n, and the fourth oil inlet channel 40a is communicated with the fourth main oil duct 9a through the fourth connecting oil duct 9 r.
Further, the main oil inlet passage structure further includes a first cylinder liner structure 41 disposed on the oil passage shaft 40, and a plurality of first seal rings 99 disposed on the input shaft 9. And the first cylinder sleeve structure 41 corresponds to the input shaft 9, the first sealing ring 99 is in close contact with the first cylinder sleeve structure 41, and the first connecting oil duct 9m, the second connecting oil duct 9n, the third connecting oil duct 9p and the fourth connecting oil duct 9r are respectively arranged between the two first sealing rings 99 in a spaced mode, so that sealing of each connecting oil duct is guaranteed. Moreover, the first cylinder liner structure 41 is provided with a plurality of first cylinder liner oil passages (41 b,41c,41d,41 a), and the first oil inlet passage 40b and the first connecting oil passage 9m, the second oil inlet passage 40c and the second connecting oil passage 9n, the third oil inlet passage 40d and the third connecting oil passage 9p, and the fourth oil inlet passage 40a and the fourth connecting oil passage 9r are correspondingly communicated through one first cylinder liner oil passage (41 b,41c,41d,41 a).
Further, the first clutch oil passage described above includes a first clutch piston chamber 1a formed between the first clutch piston chamber cover 16 and the first clutch piston rod body 15, and a first clutch balance chamber 1b formed between the first clutch balance chamber cover 18 and the first clutch piston rod body 15, and the first clutch piston chamber 1a communicates with the first main oil passage 9c, and the first clutch balance chamber 1b communicates with the fourth main oil passage 9a. The main oil feed passage structure further includes a first piston oil passage 9d and a first balance oil passage 9e which are respectively provided in the radial direction of the input shaft 9, the first piston oil passage 9d communicates with the first clutch piston chamber 1a and the first main oil passage 9c, and the first balance oil passage 9e communicates with the first clutch balance chamber 1b and the fourth main oil passage 9a. The oil sequentially passes through the first oil inlet passage 40b arranged on the oil passage shaft 40, the oil passage 41b arranged on the first cylinder sleeve structure 41, the first connecting oil passage 9m, the first main oil passage 9c and the first piston oil passage 9d arranged on the input shaft 9, and enters the first clutch piston cavity 1a belonging to the first clutch structure 1, and the oil is provided with pressure supply, so that the friction plate and the steel plate are axially displaced to be in a mutually compressed state, and clutch engagement is realized. In addition, the oil sequentially passes through a fourth oil inlet passage 40a arranged on the oil passage shaft 40, a first cylinder sleeve oil passage 41a arranged on the first cylinder sleeve structure 41, an oil passage fourth connecting oil passage 9r arranged on the input shaft 9, a fourth main oil passage 9a and a first balance oil passage 9e, and enters the first clutch balance cavity 1b, so that the oil required by the working of the first clutch balance cavity 1b is provided, and the oil requirement is realized.
Further, the second clutch oil passage described above includes a second clutch piston chamber 3a formed between the second clutch piston chamber cover and the second clutch piston rod body, and a second clutch balance chamber 3b formed between the second clutch balance chamber cover and the second clutch piston rod body, and the second clutch piston chamber 3a communicates with the second main oil passage 9h, and the second clutch balance chamber 3b communicates with the fourth main oil passage 9a. The main oil feed passage structure further includes a second piston oil passage 9i and a second balance oil passage 9g which are respectively provided in the radial direction of the input shaft 9, the second piston oil passage 9i communicates with the second clutch piston chamber 3a and the second main oil passage 9h, and the second balance oil passage 9e communicates with the second clutch balance chamber 3b and the fourth main oil passage 9a. The oil sequentially passes through a second oil inlet passage 40c arranged on the oil passage shaft 40, an oil passage 41c arranged on the first cylinder sleeve structure 41, a second connecting oil passage 9n, a second main oil passage 9h and a second piston oil passage 9i arranged on the input shaft 9, and enters a second clutch piston cavity 3a belonging to the second clutch structure 3, and the oil is provided with pressure supply, so that the friction plate and the steel plate are axially displaced to be in a mutually compressed state, and clutch engagement is realized. In addition, the oil sequentially passes through a fourth oil inlet passage 40a arranged on the oil passage shaft 40, a first cylinder sleeve oil passage 41a arranged on the first cylinder sleeve structure 41, an oil passage fourth connecting oil passage 9r arranged on the input shaft 9, a fourth main oil passage 9a and a second balance oil passage 9g, and enters the second clutch balance cavity 3b, so that the oil required by the working of the second clutch balance cavity 3b is provided, and the oil requirement is realized.
Further, the third clutch oil passage described above includes a third clutch piston chamber 5a formed between the third clutch piston chamber cover and the third clutch piston rod body, and a third clutch balance chamber 5b formed between the third clutch balance chamber cover and the third clutch piston rod body, and the third clutch piston chamber 5a communicates with the third main oil passage 9j, and the third clutch balance chamber 5b communicates with the fourth main oil passage 9 a. Moreover, the main oil inlet oil path structure further comprises a third piston oil path 9k and a third balance oil path which are respectively arranged on the radial direction of the input shaft 9, the third piston oil path 9k is communicated with the third clutch piston cavity 5a and the third main oil path 9j, the third balance oil path is communicated with the third clutch balance cavity 5b and the fourth main oil path 9a, and the third balance oil path is communicated with the second balance oil path, so that the oil path structure can be simplified. The oil sequentially passes through a third oil inlet passage 40d arranged on the oil passage shaft 40, an oil passage 41d arranged on the first cylinder sleeve structure 41, a third connecting oil passage 9p, a third main oil passage 9j and a third piston oil passage 9k arranged on the input shaft 9, and enters a third clutch piston cavity 5a belonging to the third clutch structure 5, and the oil is provided with pressure supply, so that the friction plate and the steel plate are axially displaced to be in a mutually compressed state, and clutch engagement is realized. In addition, the oil sequentially passes through a fourth oil inlet passage 40a arranged on the oil passage shaft 40, a first cylinder sleeve oil passage 41a arranged on the first cylinder sleeve structure 41, an oil passage fourth connecting oil passage 9r, a fourth main oil passage 9a and a third balance oil passage 9g arranged on the input shaft 9, and enters the third clutch balance cavity 5b, so that the oil required by the operation of the third clutch balance cavity 5b is provided, and the oil requirement is realized.
Further, the main oil inlet path structure further includes a second piston auxiliary passage 8b, a second balance auxiliary passage 8a, a third piston auxiliary passage 8c, and a third balance auxiliary passage, which are respectively provided in the radial direction of the second sun gear 81. And the second piston auxiliary passage 8b communicates with the second clutch piston chamber 3a and the second piston oil passage 9i, and the second balance auxiliary passage 8a communicates with the second clutch balance chamber 3b and the second balance oil passage 9g; the third piston auxiliary passage 8c communicates with the third clutch piston chamber 5a and the third piston oil passage 9k, and the third balance auxiliary passage communicates with the third clutch balance chamber 5b and the third balance oil passage. By providing the auxiliary oil passage on the second sun gear 81, the axial dimension of the input shaft can be further reduced, thereby reducing the axial dimension of the entire structure and making the entire structure more compact. Moreover, the third balance auxiliary passage communicates with the second balance auxiliary passage 8a, and the third balance oil passage coincides with the second balance oil passage, so that the number of oil passages can be reduced, and the oil passage structure can be simplified.
The main oil intake passage structure further includes a second piston transition passage 8e, a second balance transition passage 8d, a third piston transition passage 8h, and a third balance transition passage 8f, which are respectively provided in the radial direction of the second carrier 85 (refer to the radial direction along the input shaft). The second piston transition passage 8e communicates with the second clutch piston chamber 3a and the second piston auxiliary passage 8b, and the second balance transition passage 8d communicates with the second clutch balance chamber 3b and the second balance auxiliary passage 8a; the third piston transition passage 8h communicates with the third clutch piston chamber 5a and the third piston auxiliary passage 8c, and the third balance transition passage 8f communicates with the third clutch balance chamber 5b and the third balance auxiliary passage. By providing the auxiliary oil passage on the second carrier 85, the axial dimension of the input shaft can be further reduced, thereby reducing the axial dimension of the entire structure and making the entire structure more compact. Moreover, the third balanced transition passage 8f communicates with the second balanced transition passage 8d through the fourth auxiliary transition passage 8g, and the third balanced auxiliary passage coincides with the second balanced auxiliary passage, so that the number of oil passages can be reduced, and the oil passage structure can be simplified.
Further, the main oil inlet path structure further includes a second cylinder sleeve structure 98 disposed on the second sun gear 81, a third bearing 94 disposed inside the second cylinder sleeve structure 98 (a side far from the first row of planet structures and close to the second row of wheels), and a plurality of second seal rings 96 disposed on the input shaft 9. And the second cylinder sleeve structure 98 corresponds to the input shaft 9, the second sealing ring 96 is in close contact with the second cylinder sleeve structure 98, and the second piston auxiliary channel, the second balance auxiliary channel, the third piston auxiliary channel and the third balance auxiliary channel are respectively arranged between the two second sealing rings 98 in a spaced mode, so that good sealing is provided for each oil duct. And, a plurality of second cylinder jacket oil ducts (98 a,98b,98 c) are formed in the second cylinder jacket structure 98, and the second auxiliary piston passage is correspondingly communicated with the second piston transition passage, the second auxiliary balance passage is communicated with the second balance transition passage, the third auxiliary piston passage is communicated with the third piston transition passage, and the third auxiliary balance passage is communicated with the third balance transition passage through one second cylinder jacket oil duct, so that a good sealing effect is conveniently provided through the second cylinder jacket structure 98.
Further, the main oil inlet path structure further includes a third cylinder liner structure 97 disposed on the second planet carrier 85, the second bearing 93 is located outside the third cylinder liner structure 97 (at a side far from the second planet carrier 85 and close to the first planet row structure), and a plurality of third sealing rings 95 disposed on the second sun gear 81; and the third cylinder sleeve structure 97 corresponds to the second sun gear 81, the third sealing ring 95 is in close contact with the third cylinder sleeve structure 97, and the second piston transition channel, the second balance transition channel, the third piston transition channel and the third balance transition channel are respectively arranged between the two third sealing rings 95 in a spaced mode, so that good sealing is provided for each oil duct. And, a plurality of third cylinder liner oil ducts (97 a,97 b) are offered on the third cylinder liner structure 97, all correspond the intercommunication through a third cylinder liner oil duct between second clutch piston chamber and the second piston transition passageway, between second clutch balance chamber and the second balance transition passageway, between third clutch piston chamber and the third piston transition passageway, between third clutch balance chamber and the third balance transition passageway, be convenient for provide good sealed effect through the third cylinder liner structure 97.
In addition, the first clutch oil passage includes a first clutch lubrication cooling chamber formed between the first clutch outer and the first clutch inner, and a first inner hub lubrication cooling passage 21a provided in the first clutch inner and corresponding to the first clutch main body, and the first inner hub lubrication cooling passage 21a communicates with the fourth main oil passage 9a through the first clutch lubrication cooling chamber. Moreover, the main oil inlet passage structure further comprises a fifth connecting oil passage 9f radially arranged on the input shaft 9, and the fifth connecting oil passage 9f is communicated with the fourth main oil passage 9a and the first clutch lubrication cooling cavity. The oil sequentially passes through a fourth oil inlet passage 40a arranged on the oil passage shaft 40, a first cylinder sleeve oil passage 41a arranged on the first cylinder sleeve structure 41, an oil passage fourth connecting oil passage 9r, a fourth main oil passage 9a and a fifth connecting oil passage 9f arranged on the input shaft 9, and an oil passage first inner hub lubrication cooling passage 21a arranged on the first clutch structure 1, and enters the friction plate and steel plate area of the first clutch body, thereby realizing lubrication cooling of the first clutch structure.
The second clutch oil passage includes a second inner hub lubrication cooling passage 22a provided in the second clutch inner hub and corresponding to the second clutch main body, and a first outer hub lubrication cooling passage provided in the first clutch outer hub (the first outer hub is provided as the second clutch inner hub, so the first outer hub lubrication cooling passage is also the second inner hub lubrication cooling passage 22 a), and the second inner hub lubrication cooling passage communicates with the fourth main oil passage 9a through the first outer hub lubrication cooling passage, the first inner hub lubrication cooling passage 21a, and the first clutch lubrication cooling chamber. The oil liquid after cooling the first clutch structure 1 sequentially passes through a first outer hub lubrication cooling channel (namely a second inner hub lubrication cooling channel) 22a arranged on the first clutch structure 1 and enters the friction plate and steel plate area of the second clutch main body, so that lubrication cooling of the second clutch structure 3 is realized.
The third clutch oil passage includes a third inner hub lubrication cooling passage 58a provided in the third clutch inner hub and corresponding to the third clutch main body, and the third inner hub lubrication cooling passage 58a communicates with the fourth main oil passage 9a through the first outer hub lubrication cooling passage 22a, the first inner hub lubrication cooling passage 21a, and the first clutch lubrication cooling chamber. The oil liquid after cooling the first clutch structure 1 passes through the first outer hub lubrication cooling passage 22a arranged on the first clutch structure 1 and the third inner hub lubrication cooling passage 58a arranged on the third clutch structure 5 in sequence, and enters the friction plate and steel plate area of the third clutch body, so that lubrication cooling of the third clutch structure 5 is realized.
In addition, the main oil inlet oil path structure further comprises planet row lubrication channels 9b respectively arranged in the radial direction of the input shaft 9, and the planet row lubrication channels 9b are communicated with the fourth main oil duct 9a and the first planet row structure and can provide lubrication and cooling for the first bearings (91, 92), the first gear needle rollers 74, the first sun gear, the first planet gears and other structures. That is, the fourth main oil passage 9a has a plurality of branch oil passages simultaneously, one branch oil passage is an oil passage for providing cooling oil required for the operation of the first planetary gear structure 7 and the bearing, the other branch oil passage is an oil passage for providing oil required for the operation of the first clutch balance chamber 1b, the third branch oil passage is an oil passage for providing oil required for the operation of the second clutch balance chamber 3b and the third clutch balance chamber 5b, and the fourth branch oil passage is an oil passage for providing cooling lubrication for the first clutch main body, the second clutch main body and the third clutch main body.
In addition, the first main oil gallery 9c, the second main oil gallery 9h, the third main oil gallery 9j and the fourth main oil gallery 9a are all blind holes with one open end and one closed end, and the open ends of the first main oil gallery 9c, the second main oil gallery 9h, the third main oil gallery 9j and the fourth main oil gallery 9a are all sealed by interference through sealing balls (101, 102,103, 104). The input shaft 9 is a main oil passage mechanism for providing oil for the multi-clutch module, and comprises oil passages (9 a,9c,9h,9 j) which are arranged in the axial direction and oil passages (9 r,9m,9n,9p,9b,9d,9e,9f,9g,9i,9 k) which are arranged in the radial direction, wherein sealing balls (101, 102,103, 104) are respectively pressed into the end surfaces of the four axial oil passages, and the sealing balls and the outer diameters of the oil passages are designed into reasonable interference fit so that the sealing balls can bear a certain amount of oil pressure without falling out, thus the axial oil passages form closed oil passages in the axial direction, and at least one oil passage which is arranged in the radial direction can be arranged according to different flow requirements of different oil passages of the multi-clutch module.
In addition, the main oil inlet passage structure further includes a fifth main oil passage 10a formed in the housing structure 10, and the brake structure 6 is supplied with oil through the fifth main oil passage 10 a. Further, the above-described brake oil passage includes a brake piston chamber 6a formed between the brake piston cylinder 66 and the brake piston rod 65, and a piston cylinder oil passage 66a provided in the brake piston cylinder 66 for communicating the brake piston chamber 6a with the fifth main oil passage 10 a. The oil passes through the fifth main oil gallery 10a provided in the housing structure 10 in turn, and the piston cylinder oil gallery 66a enters the brake piston chamber 6a and has a pressure supply to axially displace the friction and steel plates into compression with each other to effect brake engagement.
The brake oil path further includes a brake lubrication cooling passage 69a provided in the brake inner hub and corresponding to the brake main body, a second outer hub lubrication cooling passage 39b provided in the second clutch outer hub, a third outer hub lubrication cooling passage 39a provided in the third clutch outer hub, and a ring gear lubrication cooling passage 86a provided in the second ring gear; and the brake piston chamber 6a communicates with the fifth main oil gallery 10a, and the brake lubrication cooling passage 69a communicates with the third inner hub lubrication cooling passage 58a and the second inner hub lubrication cooling passage 22a through the ring gear lubrication cooling passage 86a, the second outer hub lubrication cooling passage 39b, and the third outer hub lubrication cooling passage 39 a. After the oil cools the second brake structure 3 and the third brake structure 5, the oil passes through the third outer hub lubrication cooling passage 39a, the second outer hub lubrication cooling passage 39b, the ring gear lubrication cooling passage 86a, and the brake lubrication cooling passage 69a, and enters the friction plate and steel plate areas of the brake main body, thereby realizing lubrication cooling of the brake structure 6.
In addition, the invention also provides an electric control hydraulic type automatic transmission, which comprises the clutch oil supply system. The multi-clutch module of the electric control hydraulic automatic transmission realizes the modularized integrated design of three wet clutch structures and one brake structure through the reasonable combination arrangement of the nested nest structures inside and outside, so that the occupied axial dimension is shorter, the structure is compact, and the whole machine arrangement of the electric control hydraulic automatic transmission is more facilitated; in addition, the multi-clutch module of the electric control hydraulic automatic transmission is provided with a novel clutch oil supply system, so that oil supply of a piston cavity, a balance cavity and lubrication cooling of three clutch structures and one brake structure can be realized respectively; in addition, the multi-clutch module of the electric control hydraulic automatic transmission has short axial size and compact overall structure, so that the multi-clutch module can be flexibly applied to a six-gear electric control hydraulic automatic transmission; in addition, on the basis of the multi-clutch module, by adding a planetary row at the front end or the rear end of the multi-clutch module and adding a brake or a one-way clutch at the radial outer end of the multi-clutch module, the multi-clutch module can be applied to more gears such as eight-gear or nine-gear electric control hydraulic automatic transmissions; in addition, the multi-clutch module structure of the electric control hydraulic automatic transmission is more compact, which is more beneficial to shortening the axial space, reducing the weight and reducing the cost; in addition, the clutch oil supply system of the multi-clutch module of the electric control hydraulic automatic transmission fully utilizes the structural advantages of parts of the multi-clutch module, arranges the piston cavity, the balance cavity and different oil channels required by lubrication and cooling, does not need to add an additional oil channel part structure, and reduces the manufacturing cost; in addition, the clutch oil supply system of the multi-clutch module of the electric control hydraulic automatic transmission utilizes one input shaft, and a plurality of axial oil channels and radial oil channels are arranged to form a plurality of mutually independent oil channels, so that the requirement of oil supply of the multi-clutch module on the multi-channel oil channels is met, the input shaft is an elongated shaft of a common type in the vehicle transmission, the structure is easy to realize, the process is simple, and the manufacturing cost is reduced.
Further, it is also to be understood that, in the present embodiment, the positional relationship indicated by the terms "lower", "upper", "front", "rear", "left", "right", "inner", "outer", "top", "bottom", "one side", "another side", "one end", "the other end", and the like are based on the positional relationship shown in the drawings; the terms "first," "second," "third," "fourth," "fifth," and the like are used for distinguishing between different structural components. These terms are only used to facilitate the description of the invention and to simplify the description, and should not be construed as limiting the invention.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (22)

1. The multi-clutch module is characterized by comprising a shell structure, an input shaft, a first planetary row structure, a second planetary row structure, a first clutch structure, a second clutch structure, a third clutch structure and a brake structure, wherein the input shaft, the first planetary row structure, the second planetary row structure, the first clutch structure, the second clutch structure, the third clutch structure and the brake structure are arranged in the shell structure;
the first planetary gear set structure and the second planetary gear set structure are respectively arranged at two ends of the input shaft, and the first clutch structure, the second clutch structure, the third clutch structure and the brake structure are arranged between the first planetary gear set structure and the second planetary gear set structure;
the first clutch structure is positioned radially outwards of the input shaft, the second clutch structure and the third clutch structure are positioned outside the first clutch structure side by side, and the brake structure is positioned outside the second clutch structure and the third clutch structure;
the first clutch structure is connected to the input shaft and a second sun gear of the second planetary gear set, the second clutch structure is connected to the input shaft and a second planet carrier of the second planetary gear set, the third clutch structure is connected to a first gear ring of the first planetary gear set and the second planet carrier, the brake structure is connected to the shell structure and the second sun gear or to the shell structure and the second planet carrier, and a second gear ring of the second planetary gear set is arranged between the second clutch structure and the brake structure;
The first clutch outer hub is simultaneously set as a second clutch inner hub, the second clutch outer hub is simultaneously set as a third clutch outer hub, the first gear ring is simultaneously set as a third clutch inner hub, and the shell structure is simultaneously set as a brake outer hub.
2. The multi-clutch module of claim 1, wherein the first row of planet structures includes a first sun gear and a first planet carrier disposed at one end of the input shaft, a first planet gear disposed on the first planet carrier and engaged with the first sun gear, and a first ring gear engaged with the first planet gear;
the second planet row structure comprises a second sun gear and a second planet carrier which are arranged at the other end of the input shaft, a second planet gear which is arranged on the second planet carrier and meshed with the second sun gear, and a second gear ring meshed with the second planet gear.
3. The multi-clutch module of claim 2, wherein the first clutch structure, the second clutch structure, the third clutch structure, and the brake structure are each configured as a multi-plate wet clutch.
4. The multi-clutch module of claim 3 wherein the first clutch structure includes a first clutch housing disposed on the input shaft and second sun gear, and a first clutch body and a first clutch piston structure disposed in the first clutch housing; the first clutch main body is connected to the first clutch housing, one end of the first clutch piston structure corresponds to the first clutch main body, and the other end of the first clutch piston structure is connected with the input shaft;
The second clutch structure comprises a second clutch housing arranged on the input shaft and the second planet carrier, a second clutch main body and a second clutch piston structure which are arranged in the second clutch housing, and the second clutch housing is positioned outside the first clutch housing; the second clutch main body is connected to the second clutch housing, one end of the second clutch piston structure corresponds to the second clutch main body, and the other end of the second clutch piston structure is connected with the second planet carrier;
the third clutch structure comprises a third clutch shell arranged on the first gear ring and the second planet carrier, a third clutch main body and a third clutch piston structure which are arranged in the third clutch shell, and the third clutch shell and the second clutch shell are arranged side by side; the third clutch main body is connected to the third clutch housing, one end of the third clutch piston structure corresponds to the third clutch main body, and the other end of the third clutch piston structure is connected with the second planet carrier;
the brake structure comprises a brake shell arranged on the shell structure and the second planetary gear set structure, and a brake main body and a brake piston structure which are arranged in the brake shell, wherein the brake shell is arranged on the outer sides of the second clutch shell and the third clutch shell through the second gear ring in a spacing way; and the brake main body is connected to the brake shell, one end of the brake piston structure corresponds to the brake main body, and the other end of the brake piston structure is connected with the shell structure.
5. The multi-clutch module of claim 4 wherein the first clutch housing includes a first clutch inner hub connected to the second sun gear and a first clutch outer hub connected to the input shaft and located outside of the first clutch inner hub; the first clutch main body comprises a plurality of first clutch friction plates arranged on the first clutch inner hub and a plurality of first clutch steel plates arranged on the first clutch outer hub, and the plurality of first clutch friction plates are arranged between the plurality of first clutch steel plates at intervals;
the second clutch housing comprises a second clutch inner hub connected with the input shaft and a second clutch outer hub connected with the second planet carrier and positioned outside the second clutch inner hub, and the second clutch inner hub is positioned outside or on the same side as the first clutch outer hub; the second clutch main body comprises a plurality of second clutch friction plates arranged on the second clutch inner hub and a plurality of second clutch steel plates arranged on the second clutch outer hub, and the plurality of second clutch friction plates are arranged between the plurality of second clutch steel plates at intervals;
The third clutch housing comprises a third clutch inner hub connected with the first gear ring and a third clutch outer hub connected with the second planet carrier and positioned outside the third clutch inner hub, and the third clutch inner hub is positioned outside or on the same side as the first clutch outer hub; the third clutch main body comprises a plurality of third clutch friction plates arranged on the third clutch inner hub and a plurality of third clutch steel plates arranged on the third clutch outer hub, and the third clutch friction plates are arranged among the third clutch steel plates at intervals;
the brake housing comprises a brake inner hub connected with the second planet carrier or the second sun gear and a brake outer hub connected with the housing structure and positioned outside the brake inner hub, and the brake inner hub is arranged outside the third clutch outer hub through the second gear ring in a spaced manner; the brake main body comprises a plurality of brake friction plates arranged on the brake inner hub and a plurality of brake steel plates arranged on the brake outer hub, and the brake friction plates are arranged among the brake steel plates at intervals;
The third clutch friction plate is connected with the third clutch inner hub through a clearance fit spline, and the third clutch steel sheet and the third clutch tail end steel sheet of the third clutch main body are connected with the third clutch outer hub through a clearance fit spline.
6. The multi-clutch module of claim 5, wherein the first clutch piston structure comprises a first clutch piston rod disposed between the first clutch inner hub and a first clutch outer hub, the first clutch piston rod having one end in sealing connection with the input shaft and the other end corresponding to the first clutch body; the first clutch piston structure further comprises a first clutch piston cavity cover and a first clutch balance cavity cover which are connected to the input shaft and positioned between the first clutch inner hub and the first clutch outer hub, wherein the first clutch piston cavity cover and the first clutch balance cavity cover are respectively and hermetically connected to two sides of the first clutch piston rod body, and a first return spring group which is connected between the first clutch piston rod body and the first clutch balance cavity cover;
the second clutch piston structure comprises a second clutch piston rod body arranged between the second clutch inner hub and the second clutch outer hub, one end of the second clutch piston rod body corresponds to the second clutch main body, and the other end of the second clutch piston rod body is in sealing connection with the second planet carrier; the second clutch piston structure further comprises a second clutch piston cavity cover and a second clutch balance cavity cover which are connected to the second planet carrier and positioned between the second clutch inner hub and the second clutch outer hub, and the second clutch piston cavity cover and the second clutch balance cavity cover are respectively and hermetically connected to two sides of the second clutch piston rod body, and a second return spring group which is connected between the second clutch piston rod body and the second clutch balance cavity cover;
The third clutch piston structure comprises a third clutch piston rod body arranged between the third clutch inner hub and the third clutch outer hub, one end of the third clutch piston rod body penetrates through the second clutch main body to correspond to the third clutch main body, and the other end of the third clutch piston rod body is in sealing connection with the second planet carrier; the third clutch piston structure further comprises a third clutch piston cavity cover and a third clutch balance cavity cover which are connected to the second planet carrier and positioned between the third clutch inner hub and the third clutch outer hub, the third clutch piston cavity cover and the third clutch balance cavity cover are respectively and hermetically connected to two sides of the third clutch piston rod body, and a third return spring group which is connected between the third clutch piston rod body and the third clutch balance cavity cover;
the brake piston structure also comprises a brake piston cylinder connected to the shell structure, a brake piston rod arranged in the brake piston cylinder, and a brake return spring group arranged on the brake piston rod and connected with the shell structure, wherein one end of the brake piston rod is connected with the brake piston cylinder, and the other end of the brake piston rod corresponds to the brake main body.
7. The multi-clutch module of claim 6 wherein the third clutch balance chamber cover is provided simultaneously as the second clutch piston chamber cover and the third clutch outer hub is provided simultaneously as the third clutch piston chamber cover.
8. The multi-clutch module of claim 6, wherein the second sun gear includes a second sun shaft portion disposed on the input shaft and a second sun gear body coupled to the second sun shaft portion, the second sun shaft portion being proximate the first planet row structure, the second planet gears being in mesh with the second sun gear body;
the second planet carrier comprises a planet carrier axial part sleeved on the second sun shaft part and a planet carrier radial part vertically connected with the planet carrier axial part, the second planet wheel is arranged on the planet carrier radial part, and the first clutch structure, the second clutch structure and the third clutch structure are arranged between the first planet row structure and the planet carrier radial part; the first clutch outer hub is arranged close to the first planetary gear set structure, and the first clutch inner hub is connected to the end part of the second sun shaft part; the third clutch outer hub is connected to the second sun shaft portion, and the second clutch piston structure and the third clutch piston structure are both connected to the planet carrier axial portion.
9. A clutch oil supply system comprising the multi-clutch module according to any one of claims 6 to 8, and a clutch oil passage structure provided in the multi-clutch module;
the clutch oil path structure comprises a main oil inlet oil path structure, a first clutch oil path, a second clutch oil path, a third clutch oil path and a brake oil path, wherein the first clutch oil path, the second clutch oil path, the third clutch oil path and the brake oil path are respectively communicated with the main oil inlet oil path structure, the first clutch oil path corresponds to the first clutch structure, the second clutch oil path corresponds to the second clutch structure, the third clutch oil path corresponds to the third clutch structure, and the brake oil path corresponds to the brake structure.
10. The clutch oil supply system according to claim 9, wherein the main oil feed passage structure includes first, second, third and fourth main oil passages that are respectively axially opened in the input shaft and are independent of each other;
the first clutch oil path comprises a first clutch piston cavity formed between the first clutch piston cavity cover and the first clutch piston rod body and a first clutch balance cavity formed between the first clutch balance cavity cover and the first clutch piston rod body, wherein the first clutch piston cavity is communicated with the first main oil duct, and the first clutch balance cavity is communicated with the fourth main oil duct;
The second clutch oil path comprises a second clutch piston cavity formed between the second clutch piston cavity cover and the second clutch piston rod body and a second clutch balance cavity formed between the second clutch balance cavity cover and the second clutch piston rod body, wherein the second clutch piston cavity is communicated with the second main oil duct, and the second clutch balance cavity is communicated with the fourth main oil duct;
the third clutch oil path comprises a third clutch piston cavity formed between the third clutch piston cavity cover and the third clutch piston rod body and a third clutch balance cavity formed between the third clutch balance cavity cover and the third clutch piston rod body, wherein the third clutch piston cavity is communicated with the third main oil duct, and the third clutch balance cavity is communicated with the fourth main oil duct.
11. The clutch oil supply system according to claim 10, wherein the main oil supply passage structure further includes an oil passage shaft connected to the input shaft, and first, second, third and fourth oil supply passages respectively provided in a radial direction of the oil passage shaft;
The novel oil inlet device is characterized by further comprising a first connecting oil duct, a second connecting oil duct, a third connecting oil duct and a fourth connecting oil duct which are respectively arranged on the radial direction of the input shaft, wherein the first oil inlet channel is communicated with the first main oil duct through the first connecting oil duct, the second oil inlet channel is communicated with the second main oil duct through the second connecting oil duct, the third oil inlet channel is communicated with the third main oil duct through the third connecting oil duct, and the fourth oil inlet channel is communicated with the fourth main oil duct through the fourth connecting oil duct.
12. The clutch oil supply system of claim 11, wherein the main oil inlet passage structure further comprises a first cylinder liner structure disposed on the oil passage shaft, and a plurality of first seal rings disposed on the input shaft; the first cylinder sleeve structure corresponds to the input shaft, the first sealing ring is in close contact with the first cylinder sleeve structure, and the first connecting oil duct, the second connecting oil duct, the third connecting oil duct and the fourth connecting oil duct are respectively arranged between the two first sealing rings in a spaced mode;
the first cylinder sleeve structure is provided with a plurality of first cylinder sleeve oil passages, and the first oil inlet passages are correspondingly communicated with the first connecting oil passages, the second oil inlet passages are correspondingly communicated with the second connecting oil passages, the third oil inlet passages are correspondingly communicated with the third connecting oil passages, and the fourth oil inlet passages are correspondingly communicated with the fourth connecting oil passages through one first cylinder sleeve oil passage.
13. The clutch oil supply system according to claim 11, wherein the main oil-in oil passage structure further includes a first piston oil passage, a first balance oil passage, a second piston oil passage, a second balance oil passage, a third piston oil passage, a third balance oil passage, which are respectively opened in a radial direction of the input shaft;
the first piston oil passage is communicated with the first clutch piston cavity and the first main oil passage, and the first balance oil passage is communicated with the first clutch balance cavity and the fourth main oil passage; the second piston oil passage is communicated with the second clutch piston cavity and the second main oil passage, and the second balance oil passage is communicated with the second clutch balance cavity and the fourth main oil passage; the third piston oil passage is communicated with the third clutch piston cavity and the third main oil passage, the third balance oil passage is communicated with the third clutch balance cavity and the fourth main oil passage, and the third balance oil passage is communicated with the second balance oil passage.
14. The clutch oil supply system according to claim 13, wherein the main oil feed passage structure further includes a second piston auxiliary passage, a second balance auxiliary passage, a third piston auxiliary passage, a third balance auxiliary passage, which are respectively opened in a radial direction of the second sun gear;
The second piston auxiliary channel is communicated with the second clutch piston cavity and the second piston oil duct, and the second balance auxiliary channel is communicated with the second clutch balance cavity and the second balance oil duct; the third piston auxiliary channel is communicated with the third clutch piston cavity and the third piston oil channel, the third balance auxiliary channel is communicated with the third clutch balance cavity and the third balance oil channel, the third balance auxiliary channel is communicated with the second balance auxiliary channel, and the third balance oil channel coincides with the second balance oil channel.
15. The clutch oil supply system according to claim 14, wherein the main oil feed passage structure further includes a second piston transition passage, a second balance transition passage, a third piston transition passage, a third balance transition passage, which are respectively opened in a radial direction of the second carrier;
the second piston transition passage communicates with the second clutch piston chamber and a second piston auxiliary passage, and the second balance transition passage communicates with the second clutch balance chamber and the second balance auxiliary passage; the third piston transition passage is communicated with the third clutch piston cavity and the third piston auxiliary passage, and the third balance transition passage is communicated with the third clutch balance cavity and the third balance auxiliary passage; and the third balance transition channel is in communication with the second balance transition channel, the third balance auxiliary channel coinciding with the second balance auxiliary channel.
16. The clutch oil supply system of claim 15, wherein the main oil feed passage structure further comprises a second cylinder liner structure disposed on the second sun gear, and a plurality of second seal rings disposed on the input shaft; the second cylinder sleeve structure corresponds to the input shaft, the second sealing ring is in close contact with the second cylinder sleeve structure, and the second piston auxiliary channel, the second balance auxiliary channel, the third piston auxiliary channel and the third balance auxiliary channel are respectively arranged between the two second sealing rings in a spaced mode;
the second cylinder sleeve structure is provided with a plurality of second cylinder sleeve oil passages, and the second piston auxiliary passages are correspondingly communicated with the second piston transition passages, the second balance auxiliary passages are correspondingly communicated with the second balance transition passages, the third piston auxiliary passages are correspondingly communicated with the third piston transition passages, and the third balance auxiliary passages are correspondingly communicated with the third balance transition passages through one second cylinder sleeve oil passage.
17. The clutch oil supply system of claim 15, wherein the main oil feed passage structure further comprises a third cylinder liner structure disposed on the second planet carrier, and a plurality of third seal rings disposed on the second sun gear; the third cylinder sleeve structure corresponds to the second sun wheel, the third sealing ring is in close contact with the third cylinder sleeve structure, and the second piston transition channel, the second balance transition channel, the third piston transition channel and the third balance transition channel are respectively arranged between the two third sealing rings in a spaced mode;
The third cylinder sleeve structure is provided with a plurality of third cylinder sleeve oil passages, and the second clutch piston cavity is correspondingly communicated with the second piston transition passage, the second clutch balance cavity is correspondingly communicated with the second balance transition passage, the third clutch piston cavity is correspondingly communicated with the third piston transition passage, and the third clutch balance cavity is correspondingly communicated with the third balance transition passage through one third cylinder sleeve oil passage.
18. The clutch oil supply system according to any one of claims 10 to 17, wherein the main oil intake passage structure further includes planetary row lubrication passages respectively provided in a radial direction of the input shaft, the planetary row lubrication passages communicating the fourth main oil passage and the first planetary row structure.
19. The clutch oil supply system according to any one of claims 10 to 17, wherein the first main oil gallery, the second main oil gallery, the third main oil gallery and the fourth main oil gallery are each provided as blind holes having one open end and one closed end, and the open ends of the first main oil gallery, the second main oil gallery, the third main oil gallery and the fourth main oil gallery are all interference sealed by a sealing ball.
20. The clutch oil supply system according to any one of claims 10 to 17, wherein the first clutch oil passage includes a first clutch lubrication cooling chamber formed between the first clutch outer hub and a first clutch inner hub, and a first inner hub lubrication cooling passage that is opened on the first clutch inner hub and corresponds to the first clutch main body, and the first inner hub lubrication cooling passage communicates with the fourth main oil passage through the first clutch lubrication cooling chamber;
The second clutch oil way comprises a second inner hub lubrication cooling channel which is arranged on the second clutch inner hub and corresponds to the second clutch main body, and a first outer hub lubrication cooling channel which is arranged on the first clutch outer hub, and the second inner hub lubrication cooling channel is communicated with the fourth main oil duct through the first outer hub lubrication cooling channel, the first inner hub lubrication cooling channel and the first clutch lubrication cooling cavity;
the third clutch oil path comprises a third inner hub lubrication cooling channel which is arranged on the third clutch inner hub and corresponds to the third clutch main body, and the third inner hub lubrication cooling channel is communicated with the fourth main oil channel through the first outer hub lubrication cooling channel, the first inner hub lubrication cooling channel and the first clutch lubrication cooling cavity.
21. The clutch oil supply system of claim 20, wherein the main oil feed passage structure further includes a fifth main oil passage opening on the housing structure;
the brake oil path comprises a brake piston cavity formed between the brake piston cylinder and the brake piston rod, a brake lubrication cooling channel which is arranged on the brake inner hub and corresponds to the brake main body, a second outer hub lubrication cooling channel which is arranged on the second clutch outer hub, a third outer hub lubrication cooling channel which is arranged on the third clutch outer hub, and a gear ring lubrication cooling channel which is arranged on the second gear ring; and the brake piston cavity is communicated with the fifth main oil duct, and the brake lubrication cooling channel is communicated with the third inner hub lubrication cooling channel and the second inner hub lubrication cooling channel through the gear ring lubrication cooling channel, the second outer hub lubrication cooling channel and the third outer hub lubrication cooling channel.
22. An electrically controlled hydraulic automatic transmission including a clutch oil supply system as claimed in any one of claims 9 to 21.
CN201810205601.4A 2018-03-13 2018-03-13 Multi-clutch module, clutch oil supply system and electric control hydraulic automatic transmission Active CN108278335B (en)

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