CN107830163B - Hydraulic gear shifting system with parking control function - Google Patents

Hydraulic gear shifting system with parking control function Download PDF

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Publication number
CN107830163B
CN107830163B CN201711274441.0A CN201711274441A CN107830163B CN 107830163 B CN107830163 B CN 107830163B CN 201711274441 A CN201711274441 A CN 201711274441A CN 107830163 B CN107830163 B CN 107830163B
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China
Prior art keywords
valve
communicated
oil
port
parking
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CN107830163A (en
Inventor
张广瀚
乔金平
杨震
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Shengrui Transmission Co Ltd
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Shengrui Transmission Co Ltd
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    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
    • F16H61/0265—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
    • F16H61/0267—Layout of hydraulic control circuits, e.g. arrangement of valves
    • F16H61/0269—Layout of hydraulic control circuits, e.g. arrangement of valves characterised by low integration or small number of valves
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention relates to a hydraulic gear shifting system with a parking control function, which comprises a gear shifting module and a parking module, wherein the parking reversing module comprises a parking reversing valve for controlling a parking lock, and the parking reversing valve is provided with a first oil path and a second oil path for supplying or returning oil to the parking lock; the oil pump also comprises a third oil way provided with a P-gear opening valve and a fourth oil way provided with a non-P-gear opening valve; the P gear opening valve is controlled by a fourth electromagnetic valve C1_ cv, the oil inlet end of the P gear opening valve is communicated with the output end of a second electromagnetic valve B2_ cv, and the output end of the P gear opening valve is communicated with the first oil way through a parking reversing valve; the non-P blocking opening valve is controlled by a third electromagnetic valve B3_ cv, the oil inlet end of the non-P blocking opening valve is communicated with the output end of a fifth electromagnetic valve C2_ cv, and the output end of the non-P blocking opening valve is communicated with a second oil way through a parking reversing valve; the parking reversing valve also comprises a switch valve for controlling the parking reversing valve. And the control oil path of the parking reversing valve is shared with the oil path of the gear shifting module, so that the oil path of the hydraulic system is simplified.

Description

Hydraulic gear shifting system with parking control function
Technical Field
The invention relates to a hydraulic shifting system with a parking control function.
Background
Along with the higher requirements of people on the gear shifting quality, the application of the power gear shifting gearbox to the domestic engineering machinery is more and more popularized. The important characteristics of the power gear shifting gearbox are gear shifting stability and rapidity, and the gear shifting clutch is mainly controlled by a hydraulic gear shifting buffer valve to guarantee. In the prior art, the control of a clutch or a brake not only needs a gear-shifting control valve to control an oil circuit, but also needs an electromagnetic valve to control the gear-shifting control valve, so that a control system has more components and is complex.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hydraulic gear shifting system which can control the opening or closing of a parking lock, has a simple oil path and is convenient to arrange and has a parking control function.
In order to solve the technical problem, the technical scheme of the invention is as follows: the hydraulic gear shifting system with the parking control function comprises a gear shifting module, a second brake B2, a third brake B3, a first clutch C1 and a second clutch C2, wherein the gear shifting module comprises a main oil path connected with an oil pumping module, the main oil path is provided with a second electromagnetic valve B2_ cv for controlling the second brake, a third electromagnetic valve B3_ cv for controlling the third brake, a fourth electromagnetic valve C1_ cv for controlling the first clutch and a fifth electromagnetic valve C2_ cv for controlling the second clutch;
the parking reversing module comprises a parking reversing valve for controlling a parking lock, and the parking reversing valve is provided with a first oil path and a second oil path for supplying or returning oil to the parking lock; the hydraulic control system also comprises a third oil way provided with a P-gear opening valve and a fourth oil way provided with a non-P-gear opening valve;
the P-gear opening valve is controlled by the fourth electromagnetic valve C1_ cv, the oil inlet end of the P-gear opening valve is communicated with the output end of the second electromagnetic valve B2_ cv, and the output end of the P-gear opening valve is communicated with the first oil way through the parking reversing valve;
the non-P-gear opening valve is controlled by the third electromagnetic valve B3_ cv, an oil inlet end of the non-P-gear opening valve is communicated with an output end of a fifth electromagnetic valve C2_ cv, and the output end of the non-P-gear opening valve is communicated with the second oil way through the parking reversing valve;
the parking reversing valve is characterized by further comprising a switch valve for controlling the parking reversing valve.
As a preferred technical scheme, the P-stop opening valve, the non-P-stop opening valve and the parking reversing valve are all mechanical valves; the opening end of the P-gear opening valve is communicated with the fourth electromagnetic valve C1_ cv; the opening end of the non-P-gear opening valve is communicated with the third electromagnetic valve B3_ cv; the switching valve is an electromagnetic valve, and an output port of the switching valve is communicated with an opening end of the parking reversing valve.
Preferably, the brake further comprises a first brake B1 and a first electromagnetic valve B1_ cv for controlling the first brake B1.
As a preferable technical solution, the first solenoid valve B1_ cv, the second solenoid valve B2_ cv, the third solenoid valve B3_ cv, the fourth solenoid valve C1_ cv, and the fifth solenoid valve C2_ cv each include a solenoid and a valve body, the valve body is provided with a first regulation port, a second regulation port, a normally open port, and an overflow port, when the solenoid is in a power-off state, the second regulation port is in an open state, the first regulation port is in a closed state, the solenoid is powered on, and the opening sizes of the first regulation port and the second regulation port are adjusted according to the current size of the solenoid, so as to achieve different oil pressure outputs of the normally open port.
As a preferred technical solution, a first adjusting port of the fifth electromagnetic valve C2_ cv is communicated with the main oil path, a second adjusting port is connected to an oil return pipe, and a normally open port is communicated with the second clutch C2 and the non-P-gear opening valve;
the second regulation port of the third solenoid valve B3_ cv includes a first port that communicates with the main oil passage and a second port that communicates with the first regulation port of the second solenoid valve B2_ cv; the first adjusting port is connected with an oil return pipeline, and a normally open port is communicated with the third brake B3 and the non-P gear opening valve;
a second adjusting port of the second electromagnetic valve B2_ cv is connected with an oil return pipeline; a normally open port is communicated with the second brake B2 and the P-gear opening valve;
a first adjusting port of the fourth electromagnetic valve C1_ cv is communicated with the main oil path, a second adjusting port of the fourth electromagnetic valve C1_ cv is connected with an oil return pipeline, and a normally open port of the fourth electromagnetic valve C1_ cv is communicated with the first clutch C1 and the P-gear opening valve;
and a second adjusting port of the first electromagnetic valve B1_ cv is communicated with the main oil way, a first adjusting port is connected with an oil return pipeline, and a normally open port is communicated with the first brake B1.
As a preferred technical scheme, a pressure stabilizing valve is arranged on the main oil way.
By adopting the technical scheme, the hydraulic gear shifting system with the parking control function realizes the oil circuit sharing of the gear shifting module and the parking reversing module, wherein when the parking lock is started, the parking reversing valve is opened by the switch valve, the first oil circuit is communicated with the third oil circuit, the second oil circuit is communicated with the fourth oil circuit, the fourth electromagnetic valve C1_ cv controls the P-gear starting valve to be opened, and the second electromagnetic valve B2_ cv is opened to supply oil to the parking lock; the return oil of the parking lock is then discharged back into the oil pan through the non-P-stop opening valve and the fifth solenoid valve C2_ cv. When the parking lock is closed, the hydraulic oil flows in the opposite direction, but the second solenoid valve B2_ cv and the fifth solenoid valve C2_ cv do not need to be opened when oil is drained through the second solenoid valve B2_ cv or the fifth solenoid valve C2_ cv. The gear shifting system not only simplifies the whole oil circuit of the hydraulic system, but also reduces the number of the valve bodies, and is beneficial to the arrangement of the whole hydraulic system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a hydraulic schematic of the present invention;
FIG. 2 is a control schematic of a solenoid valve in an embodiment of the present invention;
FIG. 3 is a shift logic diagram of the present invention.
Detailed Description
As shown in fig. 1, the hydraulic shift system with parking control function includes a shift module including a main oil path g connecting an oil pumping module, a second brake B2, a third brake B3, a first clutch C1 and a second clutch C2, and a second solenoid valve B2_ cv controlling the second brake B2, a third solenoid valve B3_ cv controlling the third brake B3, a fourth solenoid valve C1_ cv controlling the first clutch C1 and a fifth solenoid valve C2_ cv controlling the second clutch C2 are disposed on the main oil path. The parking reversing module comprises a parking reversing valve 10 for controlling a parking lock 11, and the parking reversing valve 10 is provided with a first oil path 14 and a second oil path 13 for supplying or returning oil to the parking lock 11; the hydraulic control valve also comprises a third oil path 15 provided with a P-gear opening valve 9 and a fourth oil path e provided with a non-P-gear opening valve 7; the P-gear opening valve 9 is controlled by the fourth electromagnetic valve C1_ cv, an oil inlet end of the P-gear opening valve 9 is communicated with an output end of the second electromagnetic valve B2_ cv, and the output end of the P-gear opening valve 9 is communicated with a first oil path 14 through the parking reversing valve 10; the non-P-gear opening valve 7 is controlled by the third electromagnetic valve B3_ cv, an oil inlet end of the non-P-gear opening valve 7 is communicated with an output end of a fifth electromagnetic valve C2_ cv, and the output end of the non-P-gear opening valve 7 is communicated with the second oil way 13 through the parking reversing valve 10; and further includes a switching valve 12 for controlling the parking switch valve 10.
The P-range opening valve 9, the non-P-range opening valve 7 and the parking reversing valve 10 are all mechanical valves. The opening end of the P-gear opening valve 9 is communicated with the fourth electromagnetic valve C1_ cv; the opening end of the non-P-gear opening valve 7 is communicated with the third electromagnetic valve B3_ cv; the switch valve 12 is a solenoid valve, and an output port of the switch valve 12 is communicated with an opening end of the parking reversing valve 10.
As shown in fig. 1 and 2, each of the first solenoid valve B1_ cv, the second solenoid valve B2_ cv, the third solenoid valve B3_ cv, the fourth solenoid valve C1_ cv, and the fifth solenoid valve C2_ cv includes a solenoid 2 and a valve body 1, the valve body is provided with a first regulation port 3, a second regulation port 4, a normal open port 5, and an overflow port 6, the second regulation port 4 is in an open state when the solenoid 2 is de-energized, the first regulation port 3 is in a closed state, the solenoid 2 is energized, the spool is moved by a thrust applied by the solenoid 2, the opening sizes of the first regulation port 3 and the second regulation port 4 are adjusted according to the current size of the solenoid 2, and the opening sizes of the first regulation port 3 and the second regulation port 4 are different due to different spool cross-sections corresponding to the first regulation port 3 and the second regulation port 4 and different opening sizes of the first regulation port 3 and the second regulation port 4 after the spool is moved, so as to adjust different oil pressure outputs of the normal open port 5.
A first adjusting port of the fifth electromagnetic valve C2_ cv is communicated with the main oil path, a second adjusting port of the fifth electromagnetic valve C2_ cv is connected with an oil return pipeline, and a normally open port of the fifth electromagnetic valve C2_ cv is communicated with the second clutch C2 and the non-P-gear opening valve; the second regulation port of the third solenoid valve B3_ cv includes a first port that communicates with the main oil passage and a second port that communicates with the first regulation port of the second solenoid valve B2_ cv; the first adjusting port is connected with an oil return pipeline, and a normally open port is communicated with the third brake B3 and the non-P gear opening valve; a second adjusting port of the second electromagnetic valve B2_ cv is connected with an oil return pipeline; a normally open port is communicated with the second brake B2 and the P-gear opening valve; a first adjusting port of the fourth electromagnetic valve C1_ cv is communicated with the main oil path, a second adjusting port of the fourth electromagnetic valve C1_ cv is connected with an oil return pipeline, and a normally open port of the fourth electromagnetic valve C1_ cv is communicated with the first clutch C1 and the P-stop opening valve. The hydraulic brake further comprises a first brake B1 and a first electromagnetic valve B1_ cv for controlling the first brake B1, wherein a second adjusting port of the first electromagnetic valve B1_ cv is communicated with the main oil circuit, a first adjusting port is connected with an oil return pipeline, and a normally open port is communicated with the first brake B1. As shown in fig. 3, the shift logic of the hydraulic system is that when the transmission is in reverse gear, the second brake B2 and the second clutch C2 are actuated; in the running process, when the transmission is in a first gear, the first brake B1 and the second brake B2 act; when the transmission is in two gears, the first brake B1 and the third brake B3 act; when the transmission is in the third gear, the first brake B1 and the second clutch C2 are actuated; when the transmission is in the fourth gear, the first brake B1 and the first clutch C1 are actuated; when the transmission is in the fifth gear, the first clutch C1 and the second clutch C2 are actuated; when the transmission is in a sixth gear, the third brake B3 and the first clutch C1 are actuated; when braking, the second brake B2 and the third brake B3 act; the parking reversing valve 10 opens the parking lock, and the second brake B2 and the first clutch C1 act; the parking lock is closed by the parking changeover valve 10, and the third brake B3 and the second clutch C2 are actuated.
In order to maintain the stable oil pressure on the main oil way and ensure the stable action of the brake and the clutch, a pressure stabilizing valve 8 is arranged on the main oil way g.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (3)

1. Hydraulic pressure shift system with parking control function, including the module of shifting, the module of shifting still includes second brake B2, third brake B3, first clutch C1 and second clutch C2, its characterized in that including the main oil circuit of connecting the pump oil module: a second electromagnetic valve B2_ cv for controlling the second brake, a third electromagnetic valve B3_ cv for controlling the third brake, a fourth electromagnetic valve C1_ cv for controlling the first clutch and a fifth electromagnetic valve C2_ cv for controlling the second clutch are arranged on the main oil path;
the parking reversing module comprises a parking reversing valve for controlling a parking lock, and the parking reversing valve is provided with a first oil path and a second oil path for supplying or returning oil to the parking lock; the hydraulic control system also comprises a third oil way provided with a P-gear opening valve and a fourth oil way provided with a non-P-gear opening valve;
the P-gear opening valve is controlled by the fourth electromagnetic valve C1_ cv, the oil inlet end of the P-gear opening valve is communicated with the output end of the second electromagnetic valve B2_ cv, and the output end of the P-gear opening valve is communicated with the first oil way through the parking reversing valve; the non-P-gear opening valve is controlled by the third electromagnetic valve B3_ cv, an oil inlet end of the non-P-gear opening valve is communicated with an output end of a fifth electromagnetic valve C2_ cv, and the output end of the non-P-gear opening valve is communicated with the second oil way through the parking reversing valve;
the parking reversing valve is controlled by the control valve;
the brake further comprises a first brake B1 and a first electromagnetic valve B1_ cv for controlling the first brake B1;
the first solenoid valve B1_ cv, the second solenoid valve B2_ cv, the third solenoid valve B3_ cv, the fourth solenoid valve C1_ cv and the fifth solenoid valve C2_ cv comprise electromagnetic coils and valve bodies, wherein the valve bodies are provided with first adjusting ports, second adjusting ports, normal opening ports and overflow ports, the second adjusting ports are in an opening state, the first adjusting ports are in a closing state, the electromagnetic coils are electrified, and the opening sizes of the first adjusting ports and the second adjusting ports are adjusted along with the current of the electromagnetic coils, so that different oil pressure outputs of the normal opening ports are realized;
a first adjusting port of the fifth electromagnetic valve C2_ cv is communicated with the main oil way, a second adjusting port is connected with an oil return pipeline, and a normally open port is communicated with the second clutch C2 and the non-P-gear opening valve;
the second regulation port of the third solenoid valve B3_ cv includes a first port that communicates with the main oil passage and a second port that communicates with the first regulation port of the second solenoid valve B2_ cv; the first adjusting port is connected with an oil return pipeline, and a normally open port is communicated with the third brake B3 and the non-P gear opening valve;
a second adjusting port of the second electromagnetic valve B2_ cv is connected with an oil return pipeline; a normally open port is communicated with the second brake B2 and the P-gear opening valve;
a first adjusting port of the fourth electromagnetic valve C1_ cv is communicated with the main oil way, a second adjusting port of the fourth electromagnetic valve C1_ cv is connected with an oil return pipeline, and a normally open port of the fourth electromagnetic valve C1_ cv is communicated with the first clutch C1 and the P-gear opening valve;
and a second adjusting port of the first electromagnetic valve B1_ cv is communicated with the main oil way, a first adjusting port is connected with an oil return pipeline, and a normally open port is communicated with the first brake B1.
2. The hydraulic shift system with parking control function according to claim 1, characterized in that: the P-gear opening valve, the non-P-gear opening valve and the parking reversing valve are all mechanical valves; the opening end of the P-gear opening valve is communicated with the fourth electromagnetic valve C1_ cv; the opening end of the non-P-gear opening valve is communicated with the third electromagnetic valve B3_ cv; the switching valve is an electromagnetic valve, and an output port of the switching valve is communicated with an opening end of the parking reversing valve.
3. The hydraulic shift system with parking control function according to any one of claims 1 to 2, characterized in that: and a pressure stabilizing valve is arranged on the main oil way.
CN201711274441.0A 2017-12-06 2017-12-06 Hydraulic gear shifting system with parking control function Active CN107830163B (en)

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Application Number Priority Date Filing Date Title
CN201711274441.0A CN107830163B (en) 2017-12-06 2017-12-06 Hydraulic gear shifting system with parking control function

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Application Number Priority Date Filing Date Title
CN201711274441.0A CN107830163B (en) 2017-12-06 2017-12-06 Hydraulic gear shifting system with parking control function

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CN107830163B true CN107830163B (en) 2023-01-13

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108317280B (en) * 2018-04-18 2023-11-21 第一拖拉机股份有限公司 Power reversing valve for tractor
CN108533747B (en) * 2018-04-24 2020-09-22 盛瑞传动股份有限公司 Electronic gear shifting device and automobile
CN111536231A (en) * 2020-05-19 2020-08-14 盛瑞传动股份有限公司 Control method for safe home return of vehicle
CN112963524B (en) * 2021-02-06 2022-05-17 哈尔滨东安汽车发动机制造有限公司 Electronic gear shifting hydraulic control oil circuit of automatic transmission of automobile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05215228A (en) * 1992-02-05 1993-08-24 Toyota Motor Corp Hydraulic control device for shift by wire automatic transmission
JPH06221422A (en) * 1992-02-04 1994-08-09 Toyota Motor Corp Oil pressure control device for shift-by-wire type automatic transmission
US6767304B1 (en) * 2003-05-13 2004-07-27 Daimlerchrysler Corporation Control system for an eight-speed automatic transmission
CN106523698A (en) * 2016-12-30 2017-03-22 盛瑞传动股份有限公司 P-gear locking control device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06221422A (en) * 1992-02-04 1994-08-09 Toyota Motor Corp Oil pressure control device for shift-by-wire type automatic transmission
JPH05215228A (en) * 1992-02-05 1993-08-24 Toyota Motor Corp Hydraulic control device for shift by wire automatic transmission
US6767304B1 (en) * 2003-05-13 2004-07-27 Daimlerchrysler Corporation Control system for an eight-speed automatic transmission
CN106523698A (en) * 2016-12-30 2017-03-22 盛瑞传动股份有限公司 P-gear locking control device

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