CN114370463A - Hydraulic system applied to control of automobile transmission - Google Patents
Hydraulic system applied to control of automobile transmission Download PDFInfo
- Publication number
- CN114370463A CN114370463A CN202111563245.1A CN202111563245A CN114370463A CN 114370463 A CN114370463 A CN 114370463A CN 202111563245 A CN202111563245 A CN 202111563245A CN 114370463 A CN114370463 A CN 114370463A
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- valve
- control system
- hydraulic
- control
- pressure
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Classifications
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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
- F16H61/04—Smoothing ratio shift
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/066—Control of fluid pressure, e.g. using an accumulator
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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
- 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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- 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
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
- F16D2048/0287—Hydraulic circuits combining clutch actuation and other hydraulic systems
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
- F16D2048/0287—Hydraulic circuits combining clutch actuation and other hydraulic systems
- F16D2048/029—Hydraulic circuits combining clutch actuation with clutch lubrication or cooling
Abstract
The hydraulic system comprises a cooling and lubricating control system, a pressure control system, a motor and a clutch which are connected with the cooling and lubricating control system, and a parking system which is connected with the pressure control system, wherein the cooling and lubricating control system comprises a first electronic oil pump, a first reversing valve, a first electromagnetic valve and a cooler, and the pressure control system comprises a second electronic oil pump, a second reversing valve and a second electromagnetic valve. When the clutch is started for the first time or in cold starting, the first reversing valve is controlled to reverse through the first electromagnetic valve, so that oil of the cooling and lubricating control system enters the pressure control system, and the oil charging responsiveness or the parking action responsiveness of the clutch is improved. The invention has the characteristics of quick gear shifting response, high control precision, small leakage of a hydraulic system, high cooling and lubricating efficiency, high transmission reliability, intelligent control of a cooler and the like.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of transmission control, in particular to a hydraulic system which has the advantages of quick gear shift response, high reliability, small gear shift impact and low cost and is applied to control of an automobile transmission.
[ background of the invention ]
At present, the new energy automobile transmission industry is not developed well, and most of the existing new energy automobile transmissions are single-gear speed reducers, and are free of gear shifting systems and forced cooling and lubricating systems. The new energy automobile multi-gear transmission is less in application, 2 gears are used as the main gear, the 2-gear or multi-gear speed reducer is less in application of a hydraulic system to control the speed changer to shift gears, a motor executing mechanism is used to control shifting forks and synchronizers in the speed reducer to shift gears, and due to mechanical hard connection or drive control, the whole gear shifting has the problems of power interruption, serious impact and the like. Even if a hydraulic gear shifting system applied to a multi-gear speed reducer is of a very rough structure, a cooling and lubricating system is basically lubricated by oil throwing or oil pouring of an oil guide groove, and the cooling and lubricating efficiency is poor. Therefore, how to provide a hydraulic control system of a multi-gear transmission applied to a new energy automobile or a hybrid system to solve the problems of slow gear shift response, low control precision, large leakage (low efficiency) of the hydraulic system, low reliability, gear shift power interruption, large gear shift impact, insufficient cooling flow, damaged cooler, high cost and the like becomes an objective requirement.
[ summary of the invention ]
The invention aims to solve the problems and provides a hydraulic system which has the advantages of quick gear shifting response, high reliability, small gear shifting impact and low cost and is applied to the control of an automobile transmission.
In order to achieve the purpose of the invention, the invention provides a hydraulic system applied to control of an automobile transmission, which comprises a cooling and lubricating control system, a pressure control system, a motor and a clutch which are connected with the cooling and lubricating control system, and a parking system which is connected with the pressure control system, wherein the cooling and lubricating control system comprises a first electronic oil pump, a first reversing valve, a first electromagnetic valve and a cooler, the pressure control system comprises a second electronic oil pump, a second reversing valve and a second electromagnetic valve, the first electronic oil pump is respectively communicated with the first reversing valve and the first electromagnetic valve, an oil outlet of the first reversing valve is respectively communicated with the cooler, the second reversing valve and the second electromagnetic valve, the cooler is respectively communicated with the motor and the clutch, the second electronic oil pump is respectively communicated with the second reversing valve and the second electromagnetic valve, the second reversing valve is communicated with the clutch, the second electromagnetic valve is communicated with the parking system, and when the automobile is started for the first time or is started in a cold mode, the first reversing valve is controlled to reverse through the first electromagnetic valve, so that oil of the cooling and lubricating control system enters the pressure control system, and the oil charging responsiveness or the parking action responsiveness of the clutch is improved.
Further, the cooling and lubricating control system further comprises a first suction filter, and the first suction filter is connected with the oil inlet of the first electronic oil pump.
Further, the cooling and lubricating control system further comprises a temperature control valve, and the temperature control valve is communicated with the cooler in parallel.
Further, the cooling and lubricating control system further comprises a bypass valve, and the bypass valve is communicated with the cooler in parallel.
Further, the pressure control system further comprises a first one-way valve, and the first one-way valve is arranged between the second electronic oil pump and the second reversing valve.
Further, the pressure control system also comprises a pressure sensor for detecting the pressure of the pressure system, and the pressure sensor is connected with a hydraulic oil circuit of the hydraulic control system.
Further, an oil outlet of the second reversing valve is provided with a second one-way valve for preventing oil in a clutch oil channel from flowing back.
Further, the pressure control system also comprises a second suction filter, and the second suction filter is communicated with the second electronic oil pump.
Further, the pressure control system further comprises an electromagnet, the electromagnet is provided with a piston rod, and the piston rod enters a hydraulic cylinder of the parking system under the action of magnetic force so that the power system enters a P gear.
Further, the clutch is a wet multiplate clutch.
The invention effectively solves the problems of slow gear shifting response, large gear shifting impact, high cost and the like of a hydraulic control system of a multi-gear transmission in the existing new energy automobile or hybrid system. According to the invention, the first reversing valve is arranged, and the oil outlet of the first reversing valve is respectively communicated with the cooler, the second reversing valve and the second electromagnetic valve, so that when the hydraulic system is started for the first time or is started in a cold state, the first electromagnetic valve is used for controlling the first reversing valve to enable the oil way to be switched from the lubricating oil way to the pressure oil way to provide flow, the responsiveness of the system is improved, and the pressure fluctuation or hysteresis of the system is effectively reduced. On the other hand, the system pressure is controlled through the rotating speed of the electronic oil pump, a proportional electromagnetic valve is not needed, the number of pressure sensors is reduced, and the cost is low. In addition, the hydraulic control system has the characteristics of high performance, good reliability, simple hydraulic system, quick response, small delay and the like.
[ description of the drawings ]
Fig. 1 is a schematic diagram of the principle of the present invention.
FIG. 2 is a schematic diagram of the P-stop fuel line control of the present invention.
Fig. 3 is a schematic diagram of the oil circuit control during gear shifting or gear shifting of the invention.
[ detailed description ] embodiments
The following examples are further illustrative and supplementary to the present invention and do not limit the present invention in any way.
Referring to fig. 1, the hydraulic system for controlling a transmission of an automobile according to the present invention includes a cooling and lubrication control system 10, a pressure control system 20, a motor 30, a clutch 40, and a parking system 50. The cooling and lubrication control system 10 is connected to the motor 30 and the clutch 40, respectively, and is used for cooling the motor 30 and lubricating the clutch 40. The pressure control system 20 is connected with the clutch 40 and the parking system 50 respectively, and is used for controlling the clutch 40 and the parking system 50 to realize gear shifting and parking. The hydraulic system is applied to a multi-gear transmission or a hybrid transmission of a new energy automobile, and has the characteristics of fast gear shifting response, high control precision, small leakage of the hydraulic system, high cooling and lubricating efficiency, high transmission reliability, intelligent control of a cooler and the like.
As shown in fig. 1, the cooling and lubrication control system 10 includes a first electronic oil pump 11, a first direction valve 12, a first electromagnetic valve 13, and a cooler 14. The first electronic oil pump 11 is respectively communicated with the first directional valve 12 and the first electromagnetic valve 13, and is used for pressing hydraulic oil into the cooling and lubricating system to provide pressure or flow, so as to ensure that the pressure of the hydraulic system of the transmission reaches a required range or flow range. In this embodiment, the system pressure is controlled by the rotation speed of the first electronic oil pump 11 without using a proportional solenoid valve, and the number of pressure sensors can be reduced, thereby reducing the cost. An oil inlet of the first reversing valve 12 is communicated with the first electronic oil pump 11, and an oil outlet thereof is communicated with the cooler 14 and the pressure control system 20 respectively. The first directional valve 12 is a low leakage solenoid valve, while the control logic and hardware are involved in defining the operating mode of the solenoid valve, with high efficiency performance. The first electromagnetic valve 13 is communicated with the first reversing valve 12, and the first electromagnetic valve 13 is used for controlling the first reversing valve 12 to switch oil outlets. In this embodiment, the normally open operating mode of the first directional valve 12 belongs to a direct drive type pressure control spool valve, and the first electromagnetic valve 13 is an on-off electromagnetic valve, and has the characteristics of simple structure, fast response, small hysteresis, and the like. Specifically, when the vehicle is started for the first time or is started in a cold state, the first electromagnetic valve 13 turns the oil outlet of the first reversing valve 12 from the lubricating system to the pressure control system, so that the problems that the oil pressure of a gear shifting system or a parking system in the pressure control system is too low or the pressure or the flow is supplemented for the gear shifting system when the vehicle is started just are avoided, the oil temperature is slowly increased and the like are avoided, the responsiveness of the first start is improved, the pressure fluctuation or the hysteresis of the system is effectively reduced, and the efficiency or the performance of the whole vehicle box is improved. An oil inlet of the cooler 14 is communicated with the first reversing valve 12, and an oil outlet thereof is respectively communicated with the motor 30 and the clutch 40. The cooler 14 is used for controlling the system temperature of the transmission and the motor, and plays a role in cooling. In some embodiments, a thermostatic valve 16 is connected in parallel with the oil inlet and the oil outlet of the cooler 14, and the thermostatic valve 16 is used for controlling the temperature of the cooler 14, so as to improve the low-temperature efficiency of the system. In some embodiments, as shown in fig. 1, bypass valves 17 are further connected in parallel to the oil inlet and the oil outlet of the cooler 14, and the bypass valves 17 are error-proofing valves and are used for measuring and controlling the pressure drop condition of the cooling module in real time, so that the situation that the whole tank has no cooling and lubricating flow due to the blockage of the cooling module is avoided, and the reliability of the whole tank is effectively improved. Specifically, when the inlet pressure and the outlet pressure difference of the cooler 14 are too large, the bypass valve 17 is opened, and the damage degree of the cooler 14 can be effectively protected.
In some embodiments, as shown in fig. 1, a first suction filter 15 is further provided at the oil inlet of the first electronic oil pump 11, and the first suction filter 15 is used for controlling the oil cleanliness of the hydraulic system, ensuring that the hydraulic oil supplied to the hydraulic system of the transmission has the required cleanliness, and preventing the gas hydraulic parts in the hydraulic system from being stuck and abnormal wear and the like.
As shown in fig. 1, the pressure control system 20 includes a second electronic oil pump 21, a second direction valve 22, and a second electromagnetic valve 23. The second electronic oil pump 21 is respectively communicated with a second directional valve 22 and a second electromagnetic valve 23, and is used for pressing hydraulic oil into the pressure control system to provide pressure or flow, so as to ensure that the pressure of the hydraulic system of the transmission reaches a required range or flow range. In the present embodiment, the system pressure is controlled by the rotation speed of the second electronic oil pump 21 without using a proportional solenoid valve, and the number of pressure sensors can be reduced, so that the cost can be reduced. The oil inlet of the second reversing valve 22 is respectively communicated with the oil outlets of the second electronic oil pump 21 and the first reversing valve 12, and the oil outlet thereof is connected with the clutch 40. The second directional valve 22 is a low leakage solenoid valve, while the control logic and hardware are involved in defining the operating mode of the solenoid valve, with high efficiency performance. An oil inlet of the second electromagnetic valve 23 is respectively communicated with an oil outlet of the second electronic oil pump 21 and an oil outlet of the first reversing valve 12, and an oil outlet thereof is communicated with the parking system 50. The second switching valve 22 switches the shift oil pressure and the parking oil pressure mainly by the pressure of the parking system oil passage controlled by the second solenoid valve 23. In this embodiment, the normally open operating mode of the second directional valve 22 belongs to a direct drive type pressure control spool valve, and the second electromagnetic valve 23 is an on-off electromagnetic valve, and has the characteristics of simple structure, fast response, small hysteresis, and the like.
In some embodiments, as shown in fig. 1, a first check valve 24 is provided between the second electronic oil pump 21 and the second direction switching valve 22, and the check valve 24 is used for controlling the backflow of hydraulic oil of a hydraulic system in the gear shifting system, ensuring the responsiveness of a transmission hydraulic system, protecting hydraulic parts from failure due to shock, and the like. The oil outlet of the second reversing valve 22 is provided with a second one-way valve 26, the second one-way valve 26 is used for preventing oil backflow of a clutch oil channel in the gear shifting system, a pressure maintaining function is achieved after the clutch is released, the gear shifting responsiveness of the clutch is improved, and the power responsiveness of the whole vehicle is further improved.
In some embodiments, as shown in fig. 1, a pressure sensor 25 is provided in the pressure control system 20, and the pressure sensor 25 is connected to a hydraulic oil circuit of the hydraulic control system 20, and is used for monitoring the pressure of the hydraulic system in the gear shifting system and ensuring the pressure state, the clutch pressure and the parking pressure of the hydraulic system of the transmission.
In some embodiments, as shown in fig. 1, a second suction filter 27 is provided at the oil inlet of the second electronic oil pump 21, and the second suction filter 27 is used for controlling the oil cleanliness of the pressure control system 20, ensuring that the hydraulic oil supplied to the pressure control system has the required cleanliness, and preventing the gas hydraulic parts in the hydraulic system from being stuck and abnormal wear and the like.
In some embodiments, as shown in fig. 1 and 2, the pressure control system further includes an electromagnet 28, and the electromagnet 28 is disposed on a hydraulic cylinder of the parking system 50. Wherein, a piston rod 281 is arranged on one side of the electromagnet 28 close to the hydraulic cylinder of the parking system, the piston rod 281 is connected with the electromagnet through a spring, when the pressure in the clutch 40 is removed, the pressure is formed in the hydraulic cylinder of the parking system 50, at this time, the piston rod 281 moves towards the direction far away from the hydraulic cylinder under the magnetic force action of the electromagnet, meanwhile, the hydraulic cylinder moves upwards under the pressure action, when the hydraulic cylinder moves to be at the same level with the piston rod, the piston rod 281 enters the hydraulic cylinder, thereby the power is shifted by P.
In this embodiment, clutch 40 is the wet-type multiplate clutch, and the power of shifting can be accomplished through the hydraulic system control clutch of this application and not break off, and the impact of shifting is little.
As shown in fig. 1, the working process of the hydraulic control system is as follows: a first electronic oil pump 11 in the hydraulic cooling and lubricating control system presses hydraulic oil into the cooling and lubricating control system through a first suction filter 15, and cooling lubricating oil enters a cooler 14 through a first reversing valve 12 to be cooled and then is distributed to a clutch 40 to lubricate related parts and a motor 30 to cool the related parts; the second electronic oil pump 21 presses the hydraulic oil into the pressure control system through the second suction filter 27, and a certain system pressure is formed by the pressure control of the first electronic oil pump 11. The TCU controls whether the second electromagnetic valve 23 works or not through a gear shifting control strategy, realizes the switching state of clutch combination and parking functions, and finishes gear shifting or on-gear control. Meanwhile, when the system is started for the first time, as shown in fig. 3, in order to improve the responsiveness of the system, the first electronic oil pump 11 in the cooling and lubricating control system presses hydraulic oil into the lubricating control system through the first suction filter 15, and the hydraulic oil in the lubricating control system directly provides necessary pressure or flow for the gear shifting control system through the first reversing valve 12, so that the responsiveness of the system is improved, and the pressure fluctuation or the hysteresis of the system is effectively reduced.
As shown in fig. 1, limp-home oil control: at this time, the second electronic oil pump 21 is not operated, the pressure control system is not pressurized, and both the clutch 40 and the parking system 50 are in the analysis state.
As shown in fig. 2, the P-range oil circuit control: the second electronic oil pump 21 presses the hydraulic oil into the hydraulic system through the first suction filter 27, the pressure in the clutch piston cavity is relieved by controlling the switching control of the second electromagnetic valve 23, the pressure is formed in the parking system piston driving cavity, the clutch analysis and the parking system ratchet and pawl combination are realized, and the power system enters the P gear.
As shown in fig. 3, the shift or in-gear control: the second electronic oil pump 21 presses the hydraulic oil into the hydraulic gear shifting system through the second suction filter 22, the second electromagnetic directional valve 23 is in a closed state, the second directional valve 22 is in an initial position, and at the moment, the clutch is combined by controlling the operation of the second electronic oil pump 21, so that the gear shifting or gear shifting function is realized.
The TCU controls the combination of the clutch to shift or shift at the gear through a gear shifting control strategy, and meanwhile, under the action of the first electromagnetic valve 13, the first reversing valve 12 is pushed under the action of the first electromagnetic valve when the vehicle is started for the first time or is started in a cold state, so that oil of a lubricating system enters a pressure oil supply system, the oil charging responsiveness or parking action responsiveness of the clutch can be improved, and the gear shifting responsiveness of the whole box and the whole vehicle is improved.
Although the present invention has been described with reference to the above embodiments, the scope of the present invention is not limited thereto, and modifications, substitutions and the like of the above members are intended to fall within the scope of the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. The hydraulic system applied to control of the automobile transmission is characterized by comprising a cooling and lubricating control system (10), a pressure control system (20), a motor (30) and a clutch (40) which are connected with the cooling and lubricating control system (10), and a parking system (50) which is connected with the pressure control system (20), wherein the cooling and lubricating control system (10) comprises a first electronic oil pump (11), a first reversing valve (12), a first electromagnetic valve (13) and a cooler (14), the pressure control system (20) comprises a second electronic oil pump (21), a second reversing valve (22) and a second electromagnetic valve (23), the first electronic oil pump (11) is respectively communicated with the first reversing valve (12) and the first electromagnetic valve (13), and an oil outlet of the first reversing valve (12) is respectively communicated with the cooler (14), Second switching-over valve (22) and second solenoid valve (23) intercommunication, cooler (14) communicate with motor (30) and clutch (40) respectively, second electronic oil pump (21) communicate with second switching-over valve (22) and second solenoid valve (23) respectively, second switching-over valve (22) with clutch (40) intercommunication, second solenoid valve (23) with parking system (50) intercommunication, and when starting for the first time or cold start, through first solenoid valve (13) control first switching-over valve (12) switching-over, make the hydraulic oil entering pressure control system of cooling lubrication control system (10), improve the response of clutch oil filling responsiveness or parking action.
2. The hydraulic system applied to control of an automobile transmission according to claim 1, wherein the cooling and lubricating control system (10) further comprises a first suction filter (15), and the first suction filter (15) is connected with an oil inlet of the first electronic oil pump (11).
3. The hydraulic system applied to control of an automobile transmission as recited in claim 1, wherein the cooling and lubrication control system (10) further comprises a temperature controlled valve (16), and the temperature controlled valve (16) is in parallel communication with the cooler (15).
4. The hydraulic system applied to control of an automobile transmission according to claim 1, wherein the cooling and lubrication control system (10) further comprises a bypass valve (17), the bypass valve (17) being in parallel communication with the cooler (15).
5. The hydraulic system applied to control of an automobile transmission according to claim 1, wherein the pressure control system (20) further comprises a first check valve (24), and the first check valve (24) is provided between the second electronic oil pump (21) and the second direction changing valve (22).
6. The hydraulic system applied to control of an automobile transmission according to claim 1, wherein the pressure control system (20) further comprises a pressure sensor (25) for detecting the pressure of the pressure system, and the pressure sensor (25) is connected to a hydraulic oil circuit of the hydraulic control system (20).
7. The hydraulic system applied to the control of the automobile transmission as recited in claim 1, wherein an oil outlet of the second direction valve (22) is provided with a second check valve (26) for preventing oil in a gallery of the clutch (40) from flowing back.
8. The hydraulic system for automotive transmission control according to claim 1, characterized in that the pressure control system (20) further comprises a second suction filter (27), the second suction filter (27) being in communication with the second electronic oil pump (21).
9. A hydraulic system for automotive transmission control according to claim 1, characterised in that the pressure control system (20) further comprises an electromagnet (28), the electromagnet (28) being provided with a piston rod (281), the piston rod (281) being magnetically moved into the hydraulic cylinder of the parking system to move the power system into P gear.
10. The hydraulic system applied to control of an automobile transmission according to claim 1, wherein the clutch (40) is a wet multiplate clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111563245.1A CN114370463A (en) | 2021-12-20 | 2021-12-20 | Hydraulic system applied to control of automobile transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111563245.1A CN114370463A (en) | 2021-12-20 | 2021-12-20 | Hydraulic system applied to control of automobile transmission |
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| Publication Number | Publication Date |
|---|---|
| CN114370463A true CN114370463A (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111563245.1A Pending CN114370463A (en) | 2021-12-20 | 2021-12-20 | Hydraulic system applied to control of automobile transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220235862A1 (en) * | 2021-01-28 | 2022-07-28 | Zf Friedrichshafen Ag | Device for Operating a Parking Lock of a Motor Vehicle Transmission |
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| CN101947953A (en) * | 2010-09-21 | 2011-01-19 | 上海中科深江电动车辆有限公司 | Hydraulic automatic gear shifting and parking control system of electric vehicle |
| CN202480875U (en) * | 2011-12-30 | 2012-10-10 | 长城汽车股份有限公司 | Automobile hydraulic control parking mechanism |
| CN208153452U (en) * | 2018-05-15 | 2018-11-27 | 吉泰车辆技术（苏州）有限公司 | Hybrid-powered motor speed variator hydraulic control system |
| CN112046461A (en) * | 2020-09-17 | 2020-12-08 | 东风格特拉克汽车变速箱有限公司 | Driving structure of electronic parking system and parking method thereof |
| CN112283330A (en) * | 2020-11-18 | 2021-01-29 | 海马汽车有限公司 | Hybrid power transmission hydraulic system and vehicle |
| CN113357358A (en) * | 2021-07-07 | 2021-09-07 | 银川威力传动技术股份有限公司 | Hydraulic control system of new energy automobile multi-gear transmission |
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2021
- 2021-12-20 CN CN202111563245.1A patent/CN114370463A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101947953A (en) * | 2010-09-21 | 2011-01-19 | 上海中科深江电动车辆有限公司 | Hydraulic automatic gear shifting and parking control system of electric vehicle |
| CN202480875U (en) * | 2011-12-30 | 2012-10-10 | 长城汽车股份有限公司 | Automobile hydraulic control parking mechanism |
| CN208153452U (en) * | 2018-05-15 | 2018-11-27 | 吉泰车辆技术（苏州）有限公司 | Hybrid-powered motor speed variator hydraulic control system |
| CN112046461A (en) * | 2020-09-17 | 2020-12-08 | 东风格特拉克汽车变速箱有限公司 | Driving structure of electronic parking system and parking method thereof |
| CN112283330A (en) * | 2020-11-18 | 2021-01-29 | 海马汽车有限公司 | Hybrid power transmission hydraulic system and vehicle |
| CN113357358A (en) * | 2021-07-07 | 2021-09-07 | 银川威力传动技术股份有限公司 | Hydraulic control system of new energy automobile multi-gear transmission |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220235862A1 (en) * | 2021-01-28 | 2022-07-28 | Zf Friedrichshafen Ag | Device for Operating a Parking Lock of a Motor Vehicle Transmission |
| US11746901B2 (en) * | 2021-01-28 | 2023-09-05 | Zf Friedrichshafen Ag | Device for operating a parking lock of a motor vehicle transmission |
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