CN112065988A - Hydraulic oil supply system - Google Patents
Hydraulic oil supply system Download PDFInfo
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- CN112065988A CN112065988A CN202010902749.0A CN202010902749A CN112065988A CN 112065988 A CN112065988 A CN 112065988A CN 202010902749 A CN202010902749 A CN 202010902749A CN 112065988 A CN112065988 A CN 112065988A
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- oil
- pressure
- oil supply
- outlet
- valve
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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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
- F16H61/4096—Fluid exchange between hydrostatic circuits and external sources or consumers with pressure accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/315—Accumulator separating means having flexible separating means
- F15B2201/3152—Accumulator separating means having flexible separating means the flexible separating means being bladders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Control Of Transmission Device (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic oil supply system which comprises a pump body, a first reversing valve, a first oil supply assembly, a second oil supply assembly and a pressure supply assembly, wherein the pump body is provided with a first oil inlet and a second oil outlet; the first reversing valve is communicated with the outlet of the pump body and is provided with a first outlet and a second outlet; the first oil supply assembly is communicated with a first outlet of the first reversing valve and is used for supplying oil to a low-pressure oil system; the second oil supply assembly is communicated with a second outlet of the first reversing valve and is used for supplying oil to the high-pressure oil system; the pressure supply assembly is used for being connected to a pipeline between the second outlet and the high-pressure oil system in parallel to form high oil pressure. The invention can switch the outlet pressure of the mechanical oil pump, so as to save the energy consumption of the pump body and ensure the aim of continuously providing low-pressure oil.
Description
Technical Field
The invention relates to the technical field of vehicle oil supply parts, in particular to a hydraulic oil supply system.
Background
With the increasing of automobile sales in the Chinese market, the demand of matching with the automatic gearbox in the domestic market is also increasing, and most domestic host machine plants also develop the research and development of the double-clutch automatic gearbox. At present, each host factory deals with increasingly serious environmental problems and strict emission regulation requirements by improving the transmission efficiency of a gearbox, and the design of an oil supply system and a lubricating system of a hydraulic system is an important link, and the design of the system directly influences the efficiency of the gearbox.
The conventional automatic transmission generally supplies oil to a hydraulic system through a mechanical oil pump, the energy consumption of the hydraulic system in the transmission is mainly reflected in the energy consumption of the mechanical pump, and in order to continuously provide hydraulic pressure for the system, the oil pump needs to work in a main pressure system all the time, so that energy waste is caused.
Disclosure of Invention
In order to solve the technical problems, the invention mainly aims to provide a hydraulic oil supply system, which aims to solve the problem of high energy consumption of the traditional oil supply system.
In order to achieve the above object, the present invention provides a hydraulic oil supply system, including:
a pump body;
a first reversing valve communicated with the outlet of the pump body, the first reversing valve having a first outlet and a second outlet;
the first oil supply assembly is communicated with a first outlet of the first reversing valve and is used for supplying oil to the low-pressure oil system;
the second oil supply assembly is communicated with the second outlet of the first reversing valve and is used for supplying oil to the high-pressure oil system; and the number of the first and second groups,
and the pressure supply assembly is connected to a pipeline between the second outlet and the high-pressure oil system in parallel to form high oil pressure.
Optionally, the second oil supply assembly comprises a first oil supply conduit to communicate the second outlet with the high-pressure oil system;
the pressure supply assembly comprises a first valve body connected in parallel to the first oil supply pipeline, and the first valve body is used for adjusting oil pressure on the first oil supply pipeline.
Optionally, the first valve body is set as a mechanical slide valve, a main oil port of the mechanical slide valve is communicated with the second outlet, a first inlet of the mechanical slide valve and a second inlet of the mechanical slide valve are communicated with the first oil supply pipeline, and the first inlet is connected to the front end of the first oil supply pipeline along the oil inlet direction.
Optionally, the pressure supply assembly includes a second oil supply conduit communicating the first inlet of the mechanical slide valve and the first oil supply conduit, and a second valve body provided on the second oil supply conduit, the second valve body being configured to regulate the pressure at the first inlet.
Optionally, the second valve body is provided as a pressure solenoid valve.
Optionally, an energy accumulator is arranged at one end of the first oil supply pipeline close to the high-pressure oil system.
Optionally, the energy storage is provided as a bladder type energy storage.
Optionally, the pressure supply assembly includes a third oil supply pipeline communicating the second inlet of the mechanical slide valve and the first oil supply pipeline, and a pressure sensor is disposed at a connection of the third oil supply pipeline and the first oil supply pipeline.
Optionally, the first oil supply assembly includes a fourth oil supply conduit for communicating the first outlet of the first direction valve with the low pressure oil supply system, and the fourth oil supply conduit is in communication with the first outlet of the mechanical slide valve.
Optionally, the hydraulic oil supply system further comprises an unloading oil path, wherein the unloading oil path comprises an oil unloading pipeline connected in parallel to an oil inlet of the pump body and an oil outlet of the pump body, and an unloading valve arranged on the oil unloading pipeline; and/or the presence of a gas in the gas,
and a suction type filter is arranged on the oil inlet pipeline of the pump body.
In the technical scheme provided by the invention, the pump body, the first oil supply assembly and the second oil supply assembly are arranged to supply oil to the low-pressure oil system and the high-pressure oil system respectively, the hydraulic system can be supplemented with oil discontinuously by arranging the pressure supply assembly, and the pressure of an oil circuit of the system for supplying the high-pressure oil is always in a high-pressure state, such as 20-30 bar; and by providing said first reversing valve, the outlet pressure of said pump body can be switched between a high pressure and a low pressure, since the time required for the system pressure to rise from the low pressure to the high pressure is generally short, while the time required for the system to fall from the high pressure to the low pressure is long, and the time required for the system pressure to rise from 20bar to 30bar is generally very short, ranging from about 0.5 seconds to 5 seconds; the time for the system pressure to drop from 30bar to 20bar is longer, about more than 40 seconds, so that the outlet pressure of the pump body can be adjusted to a low-pressure channel by utilizing the time difference, the size of the outlet pressure of the mechanical oil pump is switched, the energy consumption of the pump body is saved, and the purpose of continuously providing low-pressure oil is ensured.
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, 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 the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a hydraulic oil supply system provided in the present invention.
The reference numbers illustrate:
the object of the present invention, its functional characteristics and advantageous effects will be further described with reference to the following embodiments and drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The conventional automatic transmission generally supplies oil to a hydraulic system through a mechanical oil pump, the energy consumption of the hydraulic system in the transmission is mainly reflected in the energy consumption of the mechanical pump, and in order to continuously provide hydraulic pressure for the system, the oil pump needs to work in a main pressure system all the time, so that energy waste is caused. In view of this, the present invention provides a hydraulic oil supply system, and fig. 1 is an embodiment of the hydraulic oil supply system provided by the present invention.
Referring to fig. 1, in the present embodiment, the hydraulic oil supply system 100 includes a pump body 2, a first direction valve 3, a first oil supply assembly 5, a second oil supply assembly 6, and a pressure supply assembly 4; the pump body 2 can be a mechanical oil pump; the first reversing valve 3 is communicated with an outlet of the pump body 2, and the first reversing valve 3 is provided with a first outlet 3A and a second outlet 3B; the first oil supply assembly 5 is communicated with the first outlet 3A of the first reversing valve 3 and is used for supplying oil to a low-pressure oil system 7; the second oil supply assembly 6 is communicated with the second outlet 3B of the first reversing valve 3 and is used for supplying oil to a high-pressure oil system 9; the pressure supply unit 4 is connected in parallel to a line between the second outlet 3B and the high-pressure oil system 9 to form a high oil pressure.
In the technical scheme provided by the invention, the pump body 2, the first oil supply assembly 5 and the second oil supply assembly 6 are respectively used for supplying oil for the low-pressure oil system 7 and the high-pressure oil system 9, the pressure supply assembly 4 is arranged, so that the hydraulic system can be intermittently supplemented with oil, and the pressure of an oil way of the system for supplying the high-pressure oil is always in a high-pressure state, such as 20-30 bar; and by providing said first reversing valve 3, so that the outlet pressure of said pump body 2 can be switched between a high pressure and a low pressure, since the time required for the system pressure to rise from the low pressure to the high pressure is generally short, while the time required for the system to fall from the high pressure to the low pressure is long, the time required for the system pressure to rise from 20bar to 30bar is generally very short, ranging from about 0.5 seconds to 5 seconds; the time for the system pressure to drop from 30bar to 20bar is longer, about more than 40 seconds, so that the outlet pressure of the pump body 2 can be adjusted to a low-pressure channel by using the time difference, the size of the outlet pressure of the mechanical oil pump can be switched, the energy consumption of the pump body 2 is saved, and the purpose of continuously providing low-pressure oil is ensured.
In the present embodiment, the second oil supply unit 6 includes a first oil supply conduit 61 for communicating the second outlet 3B with the high-pressure oil system 9; the pressure supply assembly 4 includes a first valve body 41 connected in parallel to the first oil supply line 61, and the first valve body 41 is used for adjusting the oil pressure on the first oil supply line 61, that is, the oil pressure entering the high-pressure oil system 9 is controllable, so as to be applicable to different pressure oil systems.
Specifically, the first valve body 41 is provided as a mechanical spool 411, the main oil port 6P of the mechanical spool 411 is communicated with the second outlet port 3B, both the first inlet 6a1 of the mechanical spool 411 and the second inlet 6a2 of the mechanical spool 411 are communicated with the first oil supply duct 61, and the first inlet 6a1 is connected to the front end of the first oil supply duct 61 in the oil-feeding direction, so that the mechanical spool 411 is connected in parallel to the first oil supply duct 61 to form a high oil pressure.
Further, the pressure supply unit 4 further includes a second oil supply pipe 42 communicating the first inlet 6a1 of the mechanical slide valve 411 and the first oil supply pipe 61, and a second valve body 43 provided on the second oil supply pipe 42, wherein the second valve body 43 is used for adjusting the pressure at the first inlet 6a1, so as to adjust the oil pressure through the second valve body 43.
Specifically, the second valve body 43 is provided as a pressure solenoid valve 431, an inlet 4P of the pressure solenoid valve is communicated with the first oil supply pipeline, an outlet 4B of the pressure solenoid valve is communicated with the first inlet 6a1 of the mechanical slide valve 411, and by adjusting the pressure solenoid valve 431 to balance the oil pressure at the 6a2 port of the mechanical slide valve with the pressure at the 6a1 port and the spring force in the mechanical slide valve 431, the main pressure system forms a stable oil pressure and provides the stable oil pressure for the high-pressure oil system. The mechanical slide valve 411 further has a first oil outlet 6B1 and a second oil outlet 6B2, the second oil supply assembly 6 and the pressure supply assembly 4 together form a main pressure system, when the oil pressure in the main pressure system reaches a set pressure value, oil will flow out from the first oil outlet 6B1 through the mechanical slide valve 411 to supply oil to a low pressure oil supply system (such as for gear shaft lubrication, clutch cooling, etc.), and when the oil output of the pump body 2 is large, the second oil outlet 6B2 of the mechanical slide valve 411 can be used for auxiliary oil drainage to maintain the main pressure system at a stable set pressure.
An energy accumulator 8 is further arranged at one end of the first oil supply pipeline 61 close to the high-pressure oil system 9, so that when the pump body 2 supplies oil to the low-pressure oil supply system, system pressure fluctuation and energy accumulation are stabilized, pressure reduction time can be prolonged, and meanwhile, the state of a high pressure value in the main pressure system is maintained, such that the main pressure of the system is always between 20bar and 30 bar.
The pressure supply assembly 4 comprises a second inlet 6a2 communicated with the mechanical slide valve 411 and a third oil supply pipeline 44 communicated with the first oil supply pipeline 61, a pressure sensor 10 is arranged at the joint of the third oil supply pipeline 44 and the first oil supply pipeline 61, and the pressure sensor 10 can detect the pressure in the main pressure system so as to further ensure the accuracy of the pressure value of the main pressure system.
The first oil supply assembly 5 includes a fourth oil supply line 51 for communicating the first outlet 3A of the first direction valve 3 with the low pressure oil supply system, and the fourth oil supply line 51 is communicated with the first outlet 3A of the mechanical spool 411. When the pressure sensor 10 detects that the system main pressure reaches a set pressure value, the first reverser is controlled to reverse through the controller, so that oil flows out from the first outlet 3A of the first reversing valve 3, and the low-pressure oil system 7 is supplied with oil through the fourth oil supply pipeline 51.
In this embodiment, the hydraulic oil supply system 100 further includes an unloading oil path, the unloading oil path includes an oil unloading pipeline connected in parallel to the oil inlet 2A of the pump body and the oil outlet 2B of the pump body, and an unloading valve 11 disposed on the oil unloading pipeline, and when the main oil path is blocked or the oil pressure is too large, the unloading valve 11 can be opened to enable oil to flow back to the oil inlet 2A of the pump body from the oil outlet 2B of the pump body, so as to prevent the system from being damaged due to too large oil pressure in the hydraulic oil supply system 100.
And the oil inlet pipeline of the pump body 2 is provided with a suction type filter 1 to ensure the purity of oil entering the hydraulic oil supply system 100 so as to avoid blocking the oil pipe.
The working principle of the hydraulic oil supply system 100 provided by the invention is as follows: when an automobile engine works, the pump body 2 starts to work, in an initial state, the oil outlet of the first reversing valve 3 is the second outlet 3B to supply oil to the main pressure system, the air bag type energy accumulator 8 starts to charge pressure, and when the pressure sensor 10 detects that the oil pressure of the main pressure system reaches a set pressure, such as 30bar, the controller controls the first reversing valve 3 to reverse, so that the oil pumped out of the pump body 2 flows out from the first outlet 3A of the first reversing valve 3, and the oil is supplied to the low-pressure oil system 7 through the fourth oil supply pipeline 51 to perform the functions of gear shaft lubrication, clutch cooling and the like. When the first direction valve 3 is switched to the first outlet 3A, the mechanical slide valve 411 also slides correspondingly, the pressure value of the main pressure system starts to continuously decrease due to leakage and the like, the airbag type energy storage device 8 starts to provide hydraulic pressure for the main pressure system so as to prolong the holding time of the main pressure system, at this time, the pressure at the outlet of the pump body 2 is in a low-pressure state, and the pump body 2 is in a low-energy-consumption working state, so that the energy consumption of the whole hydraulic oil supply system 100 becomes very low. When the pressure sensor 10 detects that the pressure of the main pressure system is less than 20bar, the controller adjusts the first reversing valve 3 to reverse, so that the oil flows out from the second outlet 3B of the first reversing valve 3, and the oil pressure in the main pressure system continuously rises. The oil pressure in the main pressure system is always in a high oil pressure state, such as between 20bar and 30bar, because the time for the system pressure to rise from low pressure to high pressure is generally short, and the time for the system to fall from high pressure to low pressure is long, the time for the system pressure to rise from 20bar to 30bar is generally very short, such as between 0.5 second and 5 seconds, and the time can be determined according to the size of the air bag type energy accumulator 8; the time for the system pressure to drop from 30bar to 20bar is longer, about more than 40 seconds, and can be determined according to the leakage amount of the main pressure system and the size of the air bag type energy accumulator 8.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the specification and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A hydraulic oil supply system, comprising:
a pump body;
a first reversing valve communicated with the outlet of the pump body, the first reversing valve having a first outlet and a second outlet;
the first oil supply assembly is communicated with a first outlet of the first reversing valve and is used for supplying oil to the low-pressure oil system;
the second oil supply assembly is communicated with the second outlet of the first reversing valve and is used for supplying oil to the high-pressure oil system; and the number of the first and second groups,
and the pressure supply assembly is connected to a pipeline between the second outlet and the high-pressure oil system in parallel to form high oil pressure.
2. The hydraulic oil supply system of claim 1 wherein the second oil supply assembly includes a first oil supply conduit for communicating the second outlet with the high pressure oil system;
the pressure supply assembly comprises a first valve body connected in parallel to the first oil supply pipeline, and the first valve body is used for adjusting oil pressure on the first oil supply pipeline.
3. The hydraulic oil supply system as claimed in claim 2, wherein the first valve body is configured as a mechanical slide valve, the main oil port of the mechanical slide valve is communicated with the second outlet, the first inlet of the mechanical slide valve and the second inlet of the mechanical slide valve are both communicated with the first oil supply pipeline, and the first inlet is connected to the front end of the first oil supply pipeline along the oil inlet direction.
4. A hydraulic oil supply system as defined in claim 3, wherein said pressure supply assembly includes a second oil supply line communicating said first inlet of said mechanical slide valve with said first oil supply line, and a second valve body disposed in said second oil supply line for regulating the pressure at said first inlet.
5. The hydraulic oil supply system as recited in claim 4, wherein the second valve body is provided as a pressure solenoid valve.
6. The hydraulic oil supply system as claimed in claim 2, wherein an accumulator is provided at an end of the first oil supply conduit close to the high-pressure oil system.
7. A hydraulic oil supply system as claimed in claim 6, wherein the accumulator is provided as a bladder accumulator.
8. The hydraulic oil supply system of claim 3, wherein the pressure supply assembly includes a third oil supply line communicating the second inlet of the mechanical spool valve with the first oil supply line, and a pressure sensor is provided at a junction of the third oil supply line and the first oil supply line.
9. The hydraulic oil supply system of claim 3 wherein the first oil supply assembly includes a fourth oil supply conduit for communicating the first outlet of the first directional control valve with the low pressure oil supply system, and the fourth oil supply conduit communicates with the first outlet of the mechanical spool valve.
10. The hydraulic oil supply system according to claim 1, further comprising an unloading oil path, the unloading oil path including an unloading pipe connected in parallel to an oil inlet of the pump body and an oil outlet of the pump body, and an unloading valve provided on the unloading pipe; and/or the presence of a gas in the gas,
and a suction type filter is arranged on the oil inlet pipeline of the pump body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010902749.0A CN112065988B (en) | 2020-08-31 | 2020-08-31 | Hydraulic oil supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010902749.0A CN112065988B (en) | 2020-08-31 | 2020-08-31 | Hydraulic oil supply system |
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| CN112065988A true CN112065988A (en) | 2020-12-11 |
| CN112065988B CN112065988B (en) | 2022-02-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130128A1 (en) * | 1991-09-11 | 1993-03-18 | Zahnradfabrik Friedrichshafen | High-pressure oil supply in motor vehicle - generates required minimum working pressure in high-pressure circuit before filling reservoir via pressure-relief valve in supply line |
| JP2011163367A (en) * | 2010-02-04 | 2011-08-25 | Toyota Motor Corp | Hydraulic control device |
| CN102414455A (en) * | 2009-05-06 | 2012-04-11 | 舍弗勒技术两合公司 | Hydraulic energy source for supplying a downstream hydraulic system with hydraulic energy |
| CN104728428A (en) * | 2013-12-18 | 2015-06-24 | 现代自动车株式会社 | Hydraulic Pressure Supply System Of Automatic Transmission For Vehicle |
| CN106662245A (en) * | 2014-08-15 | 2017-05-10 | 博格华纳公司 | Multi-pressure hydraulic supply system for an automatic transmission |
-
2020
- 2020-08-31 CN CN202010902749.0A patent/CN112065988B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130128A1 (en) * | 1991-09-11 | 1993-03-18 | Zahnradfabrik Friedrichshafen | High-pressure oil supply in motor vehicle - generates required minimum working pressure in high-pressure circuit before filling reservoir via pressure-relief valve in supply line |
| CN102414455A (en) * | 2009-05-06 | 2012-04-11 | 舍弗勒技术两合公司 | Hydraulic energy source for supplying a downstream hydraulic system with hydraulic energy |
| JP2011163367A (en) * | 2010-02-04 | 2011-08-25 | Toyota Motor Corp | Hydraulic control device |
| CN104728428A (en) * | 2013-12-18 | 2015-06-24 | 现代自动车株式会社 | Hydraulic Pressure Supply System Of Automatic Transmission For Vehicle |
| CN106662245A (en) * | 2014-08-15 | 2017-05-10 | 博格华纳公司 | Multi-pressure hydraulic supply system for an automatic transmission |
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| CN112065988B (en) | 2022-02-25 |
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