CN112879463A - Mixed-shift gearbox electro-hydraulic control system and mixed-shift gearbox - Google Patents
Mixed-shift gearbox electro-hydraulic control system and mixed-shift gearbox Download PDFInfo
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- CN112879463A CN112879463A CN201911201739.8A CN201911201739A CN112879463A CN 112879463 A CN112879463 A CN 112879463A CN 201911201739 A CN201911201739 A CN 201911201739A CN 112879463 A CN112879463 A CN 112879463A
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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
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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 invention discloses a hybrid transmission case electro-hydraulic control system and a hybrid transmission case, wherein the hybrid transmission case electro-hydraulic control system comprises an oil supply path system, an actuator system and a cooling and lubricating system, the actuator system and the cooling and lubricating system are controlled by independent motors, mutual coupling is avoided, the time length of the motor during high-load operation is greatly reduced, and the power/volume requirements and the heat dissipation requirements on the motor and a motor controller are reduced. The cooling and lubricating system is independently controlled by the electronic pump, so that the cooling flow control precision is improved, and the structure is simple. In addition, the actuator system comprises a double-clutch actuating mechanism and a hybrid clutch actuating mechanism, the pressure control precision of the actuator system is improved under the conditions that the number of valves is not increased and the safety is not influenced, the flow interference among oil paths is reduced to the maximum extent, and meanwhile, the number of electromagnetic valves on a main oil path of the actuator system is reduced to the maximum extent, so that the cost is reduced and the efficiency is improved.
Description
Technical Field
The invention relates to the technical field of a hydraulic control system of a gearbox, in particular to an electro-hydraulic control system of a hybrid gearbox and the hybrid gearbox.
Background
A hydraulic control system of a DCT P2 mode hybrid transmission case is additionally provided with a hybrid clutch control loop on the basis of a transmission case hydraulic module. Meanwhile, the requirement of a lubricating and cooling control loop is increased, so that the complexity of the system is improved, and a system with a simple structure, simple control and good robustness is required to be designed. The existing hydraulic control system of the DCT P2 mode hybrid transmission case has the following defects: firstly, the pressure of a high-sealing hydraulic system is easy to oscillate. Secondly, the traditional design of a lubricating and cooling flow control system in the forms of overflow, oil path pilot and the like is easy to cause the problems of low control precision and complex structure.
Disclosure of Invention
The invention aims to solve the problems that a hydraulic control system of a DCT P2 mode hybrid gearbox in the prior art is easy to have low control precision and complex structure. The invention provides a hybrid gearbox electro-hydraulic control system and a hybrid gearbox.
In order to solve the technical problem, the embodiment of the invention discloses an electro-hydraulic control system of a hybrid transmission, which comprises an oil supply way system, an actuator system and a cooling and lubricating system; the actuator system comprises a double-clutch actuating mechanism and a hybrid clutch actuating mechanism; the oil supply system comprises an execution system main oil way, a secondary branch oil way and a tertiary branch oil way which are sequentially communicated, and the execution system main oil way comprises a first electronic pump; the second-stage branch oil circuit comprises a first second-stage branch oil circuit and a second-stage branch oil circuit; the double-clutch executing mechanism comprises an odd-number branch clutch executing mechanism and an even-number branch clutch mechanism; the odd-number branch clutch mechanisms are respectively communicated with the main oil way of the execution system through second secondary branch oil ways; the even branch clutch actuating mechanisms are respectively communicated with the main oil way of the actuating system through a first secondary branch oil way; the hybrid clutch actuating mechanism is communicated with a main oil circuit of the actuating system.
By adopting the technical scheme, in order to solve the problems that the control precision is low and the structure is complex when the hydraulic control system of the hybrid transmission case adopts the traditional overflow or oil way pilot type lubrication and cooling flow control mode in the prior art, the invention provides the electro-hydraulic control system of the hybrid transmission case. Specifically, the actuator system is independently controlled by the first electronic pump, and the cooling and lubricating system is independently controlled by the other electronic pump, so that the cooling flow control precision is improved, and the structure is simple.
Furthermore, the actuator system comprises a double-clutch actuating mechanism and a hybrid clutch actuating mechanism, wherein the double-clutch actuating mechanism comprises an odd-numbered branch clutch actuating mechanism and an even-numbered branch clutch actuating mechanism, so that under the condition of not increasing the number of valves and not influencing safety, the odd-numbered branch clutch actuating mechanism and the even-numbered branch clutch actuating mechanism adopt double-valve series control, the pressure control precision of the actuator system is improved, the flow interference among oil ways is reduced to the maximum extent, and meanwhile, the number of electromagnetic valves on a main oil way of the actuating system is reduced to the maximum extent (namely, the oil leakage point on the main oil way of the actuating system is reduced), so that the cost is reduced and the efficiency is improved.
According to another specific embodiment of the invention, the embodiment of the invention discloses an electro-hydraulic control system of a hybrid transmission, and a first shock absorber is arranged on a second-stage branch oil path.
By adopting the technical scheme, the electro-hydraulic control system of the hybrid transmission case is a high-pressure low-leakage system, the hydraulic rigidity of an oil path is high, the problem of hydraulic oscillation is easy to occur, and in order to improve the pressure control precision of the odd-branch clutch actuating mechanism, the first shock absorber is arranged on the second-stage branch oil path and is used for absorbing hydraulic oscillation energy and reducing the hydraulic rigidity, and then the first shock absorber is matched with the electromagnetic valve in a damping mode, so that the aim of reasonably configuring the damping ratio of the electro-hydraulic control system of the hybrid transmission case is finally achieved, and the phenomenon of high-pressure oscillation is avoided.
According to another specific embodiment of the invention, the embodiment of the invention discloses an electro-hydraulic control system of a hybrid transmission, and a second shock absorber is arranged on a first secondary branch oil circuit.
By adopting the technical scheme, the electro-hydraulic control system of the hybrid transmission case is a high-pressure low-leakage system, the hydraulic rigidity of an oil circuit is high, the problem of hydraulic oscillation is easy to occur, and in order to improve the pressure control precision of an even-number branch clutch actuating mechanism, the second shock absorber is arranged on the first and second branch oil circuits and is used for absorbing hydraulic oscillation energy and reducing the hydraulic rigidity, and then the second shock absorber is in damping fit design with the electromagnetic valve, so that the aim of reasonably configuring the damping ratio of the electro-hydraulic control system of the hybrid transmission case is finally achieved, and the phenomenon of high-pressure oscillation is avoided.
According to another specific embodiment of the invention, the embodiment of the invention discloses a hybrid transmission electrohydraulic control system, wherein the three-level branch oil path comprises a first three-level branch oil path and a second three-level branch oil path; the first third-stage branch oil path is communicated with the odd-number branch clutch executing mechanism and the second-stage branch oil path; the second third-stage branch oil path is communicated with the even-numbered branch clutch executing mechanism and the first second-stage branch oil path.
According to another specific embodiment of the invention, the embodiment of the invention discloses an electro-hydraulic control system of a hybrid transmission, and a first check valve is arranged on a first three-stage branch oil way.
By adopting the technical scheme, the electro-hydraulic control system of the hybrid transmission case is a high-pressure low-leakage system, the hydraulic rigidity of the oil path is high, the problem of hydraulic oscillation is easy to occur, the pressure of the first three-level branch oil path and the pressure of the odd-numbered branch clutch executing mechanism are in cross coupling oscillation, the first three-level branch oil path is firstly low-pressure, then the odd-numbered branch clutch executing mechanism is low-pressure, and meanwhile, the first three-level branch oil path is changed into high-pressure. Therefore, the first three-stage branch oil way is provided with the first one-way valve, so that on one hand, the peak eliminating can be carried out on the high pressure of the odd-number branch clutch actuating mechanism, and meanwhile, the high pressure can also be quickly supplied to the first three-stage branch oil way, and finally, the hydraulic shock eliminating effect is achieved.
According to another specific embodiment of the invention, the embodiment of the invention discloses an electro-hydraulic control system of a hybrid transmission, and a second check valve is arranged on a second three-stage branch oil way.
By adopting the technical scheme, the electro-hydraulic control system of the hybrid transmission case is a high-pressure low-leakage system, the hydraulic rigidity of the oil path is high, the problem of hydraulic oscillation is easy to occur, the pressure of the second three-level branch oil path and the pressure of the even-numbered branch clutch executing mechanism are in cross coupling oscillation, the second three-level branch oil path first presents low pressure, then the even-numbered branch clutch executing mechanism presents low pressure, and meanwhile the second three-level branch oil path becomes high pressure. Therefore, the second one-way valve is arranged on the second three-level branch oil way, on one hand, the peak eliminating can be carried out on the high pressure of the even-number branch clutch actuating mechanism, and meanwhile, the second three-level branch oil way can be rapidly supplied with the high pressure, and finally the function of eliminating hydraulic shock is achieved.
According to another specific embodiment of the invention, the embodiment of the invention discloses an electro-hydraulic control system of a hybrid transmission, which further comprises a synchronizer control system and a parking mechanism control system; wherein
The synchronizer control system comprises a first odd-numbered gear synchronizer, a second odd-numbered gear synchronizer and a third even-numbered gear synchronizer;
the odd clutch actuating mechanism is communicated with the first odd gear synchronizer and the second odd gear synchronizer through a second secondary branch oil way; and the even-numbered clutch executing mechanism is communicated with a third even-numbered gear synchronizer and a parking mechanism control system through a first secondary branch oil way.
According to another specific embodiment of the invention, the embodiment of the invention discloses an electro-hydraulic control system of a hybrid transmission, wherein a first odd-numbered gear synchronizer, a second odd-numbered gear synchronizer and a third even-numbered gear synchronizer are respectively controlled by adopting independent four-position four-way flow valves.
By adopting the technical scheme, the synchronizer control system adopts the independent flow valves for control, the flow valves supporting any position can be controlled at any time, and interactive control can be realized, so that the control rapidity and flexibility of the synchronizer control system are greatly improved. Furthermore, the first odd-numbered gear synchronizer, the second odd-numbered gear synchronizer and the third even-numbered gear synchronizer are respectively controlled by independent four-position four-way flow valves, and compared with the prior art in which three-position three-way valves are adopted, the four-position four-way valve has reliable zero positions, so that the risk of meshing of the multi-gear synchronizers is reduced, and the reliability is improved.
According to another specific embodiment of the invention, the embodiment of the invention discloses a hybrid transmission electrohydraulic control system, a cooling and lubricating system comprises a second electronic pump and at least two electromagnetic valves, and the cooling and lubricating system is respectively communicated with a double-clutch actuating mechanism, a hybrid clutch actuating mechanism and a gear shaft; and the electromagnetic valves are all three-position four-way valves.
By adopting the technical scheme, the cooling and lubricating system comprises the second electronic pump and at least two electromagnetic valves, each electromagnetic valve is a continuous valve, each valve only uses 3 positions when in use, and the gear shaft lubrication, the hybrid clutch actuating mechanism cooling and the double clutch actuating mechanism cooling can be freely combined and distributed and controlled by combining the positions and matching the rotation speed control of the second electronic pump, so that the gear shaft lubrication, the hybrid clutch actuating mechanism cooling and the double clutch actuating mechanism cooling can be freely combined and distributed, and the gear shaft cooling and lubricating system is high in accuracy, strong in reliability and low in control difficulty. The cooling and lubricating system comprises a second electronic pump, and the second electronic pump and the actuator system are respectively controlled by independent motors, so that mutual coupling is avoided, the time of high-load (simultaneously high pressure and high flow) operation of the motor is greatly reduced, and the power/volume requirements and heat dissipation requirements on the motor and a motor controller are reduced. Different oil liquids are adopted in the high-pressure system and the low-pressure system, so that the problem that a high-pressure loop is high in sensitivity to cleanliness can be solved.
The invention also provides a hybrid gearbox, and the hybrid gearbox adopts the hybrid gearbox electro-hydraulic control system.
By adopting the technical scheme, the hybrid transmission case provided by the invention adopts the electro-hydraulic control system of the hybrid transmission case, and can solve the problems that the control precision is low and the structure is complex easily caused by the fact that the hydraulic control system of the hybrid transmission case in the prior art adopts the traditional lubricating and cooling flow control in the forms of overflow or oil way pilot and the like. Specifically, the invention provides a hybrid transmission electrohydraulic control system adopted by the hybrid transmission, and an actuator system and a cooling and lubricating system of the hybrid transmission electrohydraulic control system are controlled by adopting independent motors, so that mutual coupling is avoided, the time length of the motor during high-load operation is greatly reduced, and the power/volume requirements and heat dissipation requirements on the motor and a motor controller are reduced. Specifically, the actuator system is independently controlled by the first electronic pump, and the cooling and lubricating system is independently controlled by the other electronic pump, so that the cooling flow control precision is improved.
The invention has the beneficial effects that:
the invention provides an electro-hydraulic control system of a hybrid transmission, wherein an actuator system and a cooling and lubricating system are controlled by adopting independent motors, so that mutual coupling is avoided, the time length of the motor during high-load operation is greatly reduced, and the power/volume requirements and heat dissipation requirements on the motor and a motor controller are reduced. Specifically, the actuator system is independently controlled by the first electronic pump, and the cooling and lubricating system is independently controlled by the other electronic pump, so that the cooling flow control precision is improved, and the structure is simple.
Furthermore, the actuator system comprises a double-clutch actuating mechanism and a hybrid clutch actuating mechanism, wherein the double-clutch actuating mechanism comprises an odd-numbered branch clutch actuating mechanism and an even-numbered branch clutch actuating mechanism, so that under the condition of not increasing the number of valves and not influencing safety, the odd-numbered branch clutch actuating mechanism and the even-numbered branch clutch actuating mechanism adopt double-valve series control, the pressure control precision of the actuator system is improved, the flow interference among oil ways is reduced to the maximum extent, and meanwhile, the number of electromagnetic valves on a main oil way of the actuating system is reduced to the maximum extent (namely, the oil leakage point on the main oil way of the actuating system is reduced), so that the cost is reduced and the efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a first hybrid transmission electrohydraulic control system provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a second hybrid transmission electrohydraulic control system provided in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a cooling and lubricating system of an electro-hydraulic control system of a hybrid transmission provided in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a main oil path of an execution system of an electro-hydraulic control system of a hybrid transmission provided in embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram of an odd-numbered branch clutch actuator and a hybrid clutch actuator of a hybrid transmission electrohydraulic control system according to embodiment 1 of the present invention;
fig. 6 is a schematic structural diagram of an even-numbered branch clutch actuator and a parking mechanism control system of a hybrid transmission electrohydraulic control system according to embodiment 1 of the present invention;
fig. 7 is a schematic structural diagram of a dual clutch actuator of a hybrid transmission electrohydraulic control system according to embodiment 1 of the present invention.
Description of reference numerals:
100. an oil supply path system;
110. a main oil circuit of the execution system;
1101. a first electronic pump;
120 of a solvent; a secondary branch oil circuit;
1201. a first secondary branch oil path;
12011. a second shock absorber;
1202. a second secondary branch oil path;
12021. a first shock absorber;
130, 130; a third-stage branch oil path;
1301. a first tertiary branch oil path;
13011. a first check valve;
1302. a second tertiary branch oil path;
13021. a second one-way valve;
200. an actuator system;
210. a hybrid clutch actuator;
220. a dual clutch actuator;
2201. an odd branch clutch actuator;
2202. an even-numbered branch clutch mechanism;
300. cooling and lubricating the system;
310. a second electronic pump;
320. an electromagnetic valve;
400. a synchronizer control system;
410. a first odd-numbered stage synchronizer;
420. a second odd-numbered stage synchronizer;
430. a third even-numbered stage synchronizer;
500. a parking mechanism control system;
600. a gear shaft.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
In order to solve the problem that the hydraulic control system of the DCT P2 mode hybrid transmission in the prior art is prone to have problems of low control accuracy and complex structure, as shown in fig. 1-7, the embodiment provides an electro-hydraulic control system of a hybrid transmission, which includes an oil supply system 100, an actuator system 200 and a cooling and lubricating system 300; the actuator system 200 includes a dual clutch actuator 220 and a hybrid clutch actuator 210; the oil supply path system 100 comprises an execution system main oil path 110, a secondary branch oil path 120 and a tertiary branch oil path 130 which are sequentially communicated, wherein the execution system main oil path 110 comprises a first electronic pump 1101; the secondary branch oil passage 120 includes a first secondary branch oil passage 1201 and a second secondary branch oil passage 1202; the dual clutch actuator 220 includes an odd-numbered branch clutch actuator 2201 and an even-numbered branch clutch mechanism 2202; the odd-numbered branch clutch mechanisms 2201 are respectively communicated with the execution system main oil way 110 through second secondary branch oil ways 1202; the even branch clutch executing mechanisms 2202 are respectively communicated with the executing system main oil way 110 through a first secondary branch oil way 1201; the hybrid clutch actuator 210 communicates with the actuator system main oil passage 110.
Specifically, for solving the problems that the hydraulic control system of the hybrid transmission in the prior art adopts the traditional overflow or oil way pilot mode to lubricate and control the cooling flow rate easily, the control precision is not high, and the structure is complex, the electro-hydraulic control system of the hybrid transmission provided by the embodiment, the actuator system 200 and the cooling and lubricating system 300 adopt independent motor control, mutual coupling is avoided, the time length of the motor during high-load operation is greatly reduced, and the power/volume requirement and the heat dissipation requirement on the motor and the motor controller are reduced. Specifically, the actuator system 200 is independently controlled by the first electronic pump 1101, and the cooling and lubricating system 300 is independently controlled by the second electronic pump 310, so that the cooling flow control accuracy is improved, and the structure is simple.
Further, the actuator system 200 comprises a dual clutch actuator 220 and a hybrid clutch actuator 210, the dual clutch actuator 220 comprises an odd branch clutch actuator 2201 and an even branch clutch actuator 2202, so that the odd branch clutch actuator 2201 and the even branch clutch actuator 2202 adopt dual-valve series control under the condition that the number of valves is not increased and the safety is not affected, the pressure control precision of the actuator system 200 is improved, the flow interference among oil paths is reduced to the maximum extent, and the number of electromagnetic valves on the main oil path 110 of the actuator system is reduced to the maximum extent (namely, the oil leakage dew point on the main oil path of the actuator system is reduced) so as to reduce the cost and improve the efficiency.
As shown in fig. 1, according to another specific embodiment of the present embodiment, the embodiment of the present embodiment discloses an electro-hydraulic control system for a hybrid transmission, and a first shock absorber 12021 is disposed on a second-stage branch oil path 1202.
Specifically, because the hybrid transmission case electric-hydraulic control system is a high-pressure and low-leakage system, the hydraulic rigidity of the oil path is high, and the problem of hydraulic shock is easily caused, in order to improve the pressure control precision of the odd-branch clutch executing mechanism 2201, the first shock absorber 12021 is arranged on the second-stage branch oil path 1202 in the embodiment, and is used for absorbing hydraulic shock energy, reducing the hydraulic rigidity, and then is designed in a damping fit with the electromagnetic valve, so that the purpose of reasonably configuring the damping ratio of the hybrid transmission case electric-hydraulic control system is finally achieved, and the phenomenon of high-pressure shock is avoided.
As shown in fig. 1, according to another specific embodiment of the present embodiment, the embodiment of the present embodiment discloses an electro-hydraulic control system for a hybrid transmission, and a second shock absorber 12011 is disposed on a first secondary branch oil circuit 1201.
Specifically, as the electro-hydraulic control system of the hybrid transmission case is a high-pressure low-leakage system, the hydraulic rigidity of an oil path is high, and the problem of hydraulic oscillation is easy to occur, and in order to improve the pressure control precision of the even-numbered branch clutch actuating mechanism 2202, the second shock absorber 12011 is arranged on the first and second branch oil paths 1201, and is used for absorbing hydraulic oscillation energy and reducing the hydraulic rigidity, and then is in damping fit design with the electromagnetic valve, so that the aim of reasonably configuring the damping ratio of the electro-hydraulic control system of the hybrid transmission case is finally achieved, and the phenomenon of high-pressure oscillation is avoided.
As shown in fig. 2, according to another specific embodiment of this embodiment, the embodiment of this embodiment discloses an electro-hydraulic control system for a hybrid transmission, and the three-stage branch oil path 130 includes a first three-stage branch oil path 1301 and a second three-stage branch oil path 1302; the first tertiary branch oil path 1301 is communicated with the odd-numbered branch clutch executing mechanism 2201 and the second secondary branch oil path 1201; the second tertiary branch oil passage 1302 communicates the even-numbered branch clutch actuator 2202 with the first secondary branch oil passage.
As shown in fig. 2, according to another specific implementation manner of this embodiment, the implementation manner of this embodiment discloses an electro-hydraulic control system of a hybrid transmission, and a first check valve 13011 is arranged on a first three-stage branch oil path 1301.
Specifically, since the hybrid transmission electrohydraulic control system is a high-pressure low-leakage system, the hydraulic rigidity of the oil path is high, the problem of hydraulic shock is easily caused, and the pressure of the first three-stage branch oil path 1301 and the pressure of the odd-numbered branch clutch executing mechanism 2201 are in cross-coupling shock, the first three-stage branch oil path 1301 first generates low pressure, and then the odd-numbered branch clutch executing mechanism 2201 generates low pressure, and simultaneously the first three-stage branch oil path 1301 becomes high pressure. Therefore, the first one-way valve 13011 is provided on the first tertiary branch oil passage 1301, so that on one hand, the peak of the high pressure of the odd-numbered branch clutch actuator 2201 can be eliminated, and at the same time, the high pressure can be quickly supplied to the first tertiary branch oil passage 1301, and finally, the hydraulic shock can be eliminated.
As shown in fig. 2, according to another specific implementation manner of this embodiment, the implementation manner of this embodiment discloses an electro-hydraulic control system of a hybrid transmission, and a second check valve 13021 is arranged on the second three-stage branch oil path 1302.
Specifically, since the electro-hydraulic control system of the hybrid transmission case is a high-pressure low-leakage system, the hydraulic rigidity of the oil path is high, and the problem of hydraulic shock is likely to occur, and the pressure of the second third-stage branch oil path 1302 and the pressure of the even-numbered branch clutch executing mechanism 2202 are cross-coupled and vibrate, the second third-stage branch oil path 1302 first exhibits low pressure, and then the even-numbered branch clutch executing mechanism 2202 exhibits low pressure, and at the same time, the second third-stage branch oil path 1302 becomes high pressure. Therefore, the second check valve 13021 is provided in the second tertiary branch oil passage 1302, so that on one hand, the peak of the high pressure of the even-numbered branch clutch actuator 2202 can be eliminated, and at the same time, the high pressure can be quickly supplied to the second tertiary branch oil passage 1302, and finally, the function of eliminating hydraulic shock is achieved.
As shown in fig. 1 to 6, according to another specific implementation of the present embodiment, the implementation of the present embodiment discloses an electro-hydraulic control system for a hybrid transmission, which further includes a synchronizer control system 400 and a parking mechanism control system 500; wherein synchronizer control system 400 includes a first odd gear synchronizer 410, a second odd gear synchronizer 420, and a third even gear synchronizer 430; the odd clutch actuator 2201 is communicated with the first odd gear synchronizer 410 and the second odd gear synchronizer 420 through a second secondary branch oil path 1202; the even-numbered clutch actuator 2202 communicates with the third even-numbered stage synchronizer and the parking mechanism control system through the first secondary branch oil passage 1201.
As shown in fig. 1 to 6, according to another specific embodiment of the present embodiment, the embodiment of the present embodiment discloses an electro-hydraulic control system for a hybrid transmission, wherein a first odd-numbered gear synchronizer 410, a second odd-numbered gear synchronizer 420 and a third even-numbered gear synchronizer 430 are respectively controlled by using independent four-position four-way flow valves.
Specifically, the synchronizer control system 400 is controlled by using an independent flow valve, the flow valve supporting any position can be controlled at any time, and interactive control can be realized, so that the rapidity and flexibility of control of the synchronizer control system are greatly improved. Further, the first odd-numbered gear synchronizer 410, the second odd-numbered gear synchronizer 420 and the third even-numbered gear synchronizer 430 are respectively controlled by independent four-position four-way flow valves, and compared with the prior art in which three-position three-way valves are adopted, the four-position four-way valve has reliable zero positions, which is beneficial to reducing the risk of meshing of multi-gear synchronizers and improving the reliability.
As shown in fig. 1 to 7, according to another specific embodiment of the present embodiment, the embodiment of the present embodiment discloses an electro-hydraulic control system for a hybrid transmission, wherein a cooling and lubricating system 300 includes a second electronic pump 310 and at least two electromagnetic valves 320, and the cooling and lubricating system 300 is respectively communicated with a dual clutch actuator 220, a hybrid clutch actuator 210 and a pinion 600; and solenoid valves 320 are three-position, four-way valves.
Specifically, each electromagnetic valve 320 is a continuous valve, each electromagnetic valve 320 only uses 3 positions when in use, and through position combination and matching with the rotation speed control of the second electronic pump 310, the arbitrary combination distribution control of three flows of lubrication of the gear shaft 600, cooling of the hybrid clutch actuating mechanism 210 and cooling of the dual clutch actuating mechanism 220 can be realized, and the device has high accuracy, strong reliability and low control difficulty. The cooling and lubrication system 300 includes a second electronic pump 310, which is controlled by an independent motor from the actuator system 200, so as to avoid mutual coupling, greatly reduce the time for the motor to operate under high load (simultaneously high pressure and high flow rate), and reduce the power/volume requirement and heat dissipation requirement for the motor and the motor controller. Different oil liquids are adopted in the high-pressure system and the low-pressure system, so that the problem that a high-pressure loop is high in sensitivity to cleanliness can be solved. The following chart is a chart of three paths of cooling and lubricating flow distribution of a lubricating system based on two electromagnetic valves 320 to a gear shaft 600, a hybrid clutch actuating mechanism 210 and a dual clutch actuating mechanism 220:
the oil resistance of the C12 loop is the oil resistance of the double-clutch actuating mechanism 220 loop; the oil resistance of the C0 loop is the oil resistance of the hybrid clutch actuator 210 loop; the Gear loop oil resistance is the oil resistance of the Gear shaft 600 loop; the EOP oil pumping coefficient is the oil pumping coefficient of the second electronic pump 310; the EOP output oil amount is the output oil amount of the second electronic pump 310; c12 is the flow rate distributed by the double clutch actuator 220 circuit; c0 is the flow rate distributed by the hybrid clutch actuator 210 circuit; gear is the flow rate allocated to the Gear shaft 600 loop.
Example 2
The embodiment also provides a hybrid transmission (a schematic diagram of the embodiment is not given), the hybrid transmission adopts the above-mentioned hybrid transmission electrohydraulic control system, and the problems that the control precision is not high and the structure is complex easily occur when the hydraulic control system of the hybrid transmission in the prior art adopts the traditional overflow or oil way pilot type lubrication and cooling flow control. Specifically, in the hybrid transmission electrohydraulic control system adopted by the hybrid transmission provided by the embodiment, the actuator system 200 (see fig. 1 to 7) and the cooling and lubricating system 300 (see fig. 1 to 7) of the hybrid transmission adopt independent motor control, so that mutual coupling is avoided, the time length of the motor during high-load operation is greatly reduced, and the power/volume requirements and the heat dissipation requirements on the motor and the motor controller are reduced. Specifically, the actuator system 200 is independently controlled by the first electronic pump 1101, and the cooling and lubricating system 300 is independently controlled by the second electronic pump 310, so that the cooling flow control accuracy is improved.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. An electro-hydraulic control system of a hybrid transmission case comprises an oil supply path system, an actuator system and a cooling and lubricating system; the actuator system is characterized by comprising a double-clutch actuating mechanism and a hybrid clutch actuating mechanism;
the oil supply system comprises an execution system main oil way, a secondary branch oil way and a tertiary branch oil way which are sequentially communicated; the main oil circuit of the execution system comprises a first electronic pump; the second-stage branch oil path comprises a first second-stage branch oil path and a second-stage branch oil path;
the double-clutch executing mechanism comprises an odd-number branch clutch executing mechanism and an even-number branch clutch executing mechanism; the odd-branch clutch executing mechanism is communicated with the executing system main oil way through the second secondary branch oil way; the even branch clutch executing mechanism is communicated with the executing system main oil way through the first secondary branch oil way respectively;
and the hybrid clutch actuating mechanism is communicated with the main oil circuit of the actuating system.
2. The electro-hydraulic control system of a hybrid transmission according to claim 1, wherein a first shock absorber is provided on the second-stage branch oil passage.
3. The electro-hydraulic control system of a hybrid transmission of claim 2, wherein a second shock absorber is disposed on the first secondary branch oil circuit.
4. The hybrid transmission electrohydraulic control system of claim 1, wherein said tertiary branch oil passage includes a first tertiary branch oil passage and a second tertiary branch oil passage; the first third-stage branch oil path is communicated with the odd-number branch clutch executing mechanism and the second-stage branch oil path; and the second tertiary branch oil path is communicated with the even branch clutch actuating mechanism and the first secondary branch oil path.
5. The electro-hydraulic control system of a hybrid transmission according to claim 4, wherein a first check valve is provided on the first tertiary branch oil passage.
6. The electro-hydraulic control system of a hybrid transmission according to claim 5, wherein a second check valve is provided on the second tertiary branch oil passage.
7. The hybrid transmission electrohydraulic control system of any one of claims 1 to 6, further including a synchronizer control system and a parking mechanism control system; wherein
The synchronizer control system comprises a first odd-numbered gear synchronizer, a second odd-numbered gear synchronizer and a third even-numbered gear synchronizer;
the odd clutch actuating mechanism is communicated with the first odd gear synchronizer and the second odd gear synchronizer through the second secondary branch oil way; and the even-numbered clutch executing mechanism is communicated with the third even-numbered gear synchronizer and the parking mechanism control system through the first secondary branch oil way.
8. The hybrid transmission electrohydraulic control system of claim 7, wherein said first odd-numbered gear synchronizer, said second odd-numbered gear synchronizer and said third even-numbered gear synchronizer are controlled by independent four-position four-way flow valves, respectively.
9. The hybrid transmission electrohydraulic control system of claim 8,
the cooling and lubricating system comprises a second electronic pump and at least two electromagnetic valves, and is respectively communicated with the double-clutch actuating mechanism, the hybrid clutch actuating mechanism and the gear shaft; and is
The electromagnetic valves are all three-position four-way valves.
10. A hybrid transmission, characterized in that it employs a hybrid transmission electrohydraulic control system according to any one of claims 1 to 9.
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| CN201911201739.8A CN112879463B (en) | 2019-11-29 | 2019-11-29 | Mixed-shift gearbox electro-hydraulic control system and mixed-shift gearbox |
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| CN201911201739.8A CN112879463B (en) | 2019-11-29 | 2019-11-29 | Mixed-shift gearbox electro-hydraulic control system and mixed-shift gearbox |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006003517A1 (en) * | 2006-01-24 | 2007-07-26 | Borgwarner Inc., Auburn Hills | Hydraulic control device for triggering a double clutch, especially in an automatic double-clutch gearbox or in a hybrid drive system has actuators, a proportional valve and distributing valves |
| WO2008052502A1 (en) * | 2006-10-30 | 2008-05-08 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic controller for a double clutch gearbox |
| JP2013174335A (en) * | 2012-02-27 | 2013-09-05 | Aisin Aw Co Ltd | Drive device for vehicle |
| CN107061547A (en) * | 2017-05-24 | 2017-08-18 | 捷孚传动科技有限公司 | hybrid vehicle and its gear box hydraulic control system |
| CN109958763A (en) * | 2017-12-26 | 2019-07-02 | 长城汽车股份有限公司 | A kind of hydraulic control system and speed changer, vehicle of double-clutch automatic gearbox |
| CN110285210A (en) * | 2018-08-28 | 2019-09-27 | 长城汽车股份有限公司 | Hydraulic control system and vehicle |
-
2019
- 2019-11-29 CN CN201911201739.8A patent/CN112879463B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006003517A1 (en) * | 2006-01-24 | 2007-07-26 | Borgwarner Inc., Auburn Hills | Hydraulic control device for triggering a double clutch, especially in an automatic double-clutch gearbox or in a hybrid drive system has actuators, a proportional valve and distributing valves |
| WO2008052502A1 (en) * | 2006-10-30 | 2008-05-08 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic controller for a double clutch gearbox |
| JP2013174335A (en) * | 2012-02-27 | 2013-09-05 | Aisin Aw Co Ltd | Drive device for vehicle |
| CN107061547A (en) * | 2017-05-24 | 2017-08-18 | 捷孚传动科技有限公司 | hybrid vehicle and its gear box hydraulic control system |
| CN109958763A (en) * | 2017-12-26 | 2019-07-02 | 长城汽车股份有限公司 | A kind of hydraulic control system and speed changer, vehicle of double-clutch automatic gearbox |
| CN110285210A (en) * | 2018-08-28 | 2019-09-27 | 长城汽车股份有限公司 | Hydraulic control system and vehicle |
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| CN112879463B (en) | 2022-09-27 |
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