CN114321348A - Hydraulic system of hybrid transmission - Google Patents
Hydraulic system of hybrid transmission Download PDFInfo
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- CN114321348A CN114321348A CN202011062878.XA CN202011062878A CN114321348A CN 114321348 A CN114321348 A CN 114321348A CN 202011062878 A CN202011062878 A CN 202011062878A CN 114321348 A CN114321348 A CN 114321348A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 44
- 239000003921 oil Substances 0.000 claims abstract description 339
- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 239000010687 lubricating oil Substances 0.000 claims abstract description 36
- 230000001050 lubricating effect Effects 0.000 claims description 33
- 238000005461 lubrication Methods 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The invention discloses a hydraulic system of a hybrid transmission, which comprises: the high-pressure oil pump, the low-pressure oil pump and the oil tank, wherein the inlet of the high-pressure oil pump and the inlet of the low-pressure oil pump are connected with the oil tank; one end of the lubricating oil way is connected with an outlet of the low-pressure oil pump, and the other end of the lubricating oil way is respectively connected with the mechanisms to be lubricated and used for supplying lubricating oil to the mechanisms to be lubricated; one end of the pressure oil way is connected with an outlet of the high-pressure oil pump, and the other end of the pressure oil way is connected with a parking oil cavity of the parking mechanism and a piston cavity of the clutch. According to the hydraulic system of the hybrid transmission, the high-pressure oil pump and the low-pressure oil pump which are connected with the oil tank are arranged, oil supply can be realized according to requirements, the control is simple, the oil supply efficiency of the hydraulic system is improved, the high-pressure oil pump is connected with the pressure oil way, the low-pressure oil pump is connected with the lubricating oil way, the hydraulic system is simplified, the production cost of the hydraulic system is reduced, and the safety and reliability of the hydraulic system are improved.
Description
Technical Field
The invention relates to the technical field of automobile transmission systems, in particular to a hydraulic system of a hybrid transmission.
Background
In the related technology, the market share of the new energy automobile is higher and higher at present, the hybrid electric automobile is purely driven at low speed, and the engine participates in driving at medium and high speed, so that the energy saving and emission reduction trend of the country is met, the NVH performance (noise, vibration and sound vibration roughness performance) of the whole automobile is better, the sales volume is inevitably better and better, and the DHT transmission (hybrid transmission) is taken as a transmission specially developed for hybrid power and is inevitably paid more and more attention by various main engine plants. The clutch control, parking control and cooling and lubricating of the motor of the DHT transmission all need participation of a hydraulic system, and the advanced hydraulic system greatly improves the overall performance of the DHT transmission.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a hydraulic system of a hybrid transmission, which is simple to control and high in reliability.
According to a hydraulic system of a hybrid transmission of the present invention, the hydraulic system of the hybrid transmission includes: the oil pump comprises a high-pressure oil pump, a low-pressure oil pump and an oil tank, wherein an inlet of the high-pressure oil pump and an inlet of the low-pressure oil pump are connected with the oil tank; one end of the lubricating oil way is connected with an outlet of the low-pressure oil pump, and the other end of the lubricating oil way is respectively connected with a plurality of mechanisms to be lubricated and used for supplying lubricating oil to the mechanisms to be lubricated; and one end of the pressure oil way is connected with an outlet of the high-pressure oil pump, and the other end of the pressure oil way is connected with a parking oil cavity of the parking mechanism and a piston cavity of the clutch.
According to the hydraulic system of the hybrid transmission, the high-pressure oil pump and the low-pressure oil pump which are connected with the oil tank are arranged, oil supply can be realized according to requirements, the control is simple, the oil supply efficiency of the hydraulic system is improved, the high-pressure oil pump is connected with the pressure oil way, the low-pressure oil pump is connected with the lubricating oil way, the hydraulic system is simplified, the production cost of the hydraulic system is reduced, and the safety and reliability of the hydraulic system are improved.
In some embodiments, the hydraulic system of the hybrid transmission further comprises: and the oil pump motor is connected with the high-pressure oil pump and the low-pressure oil pump and is used for driving the high-pressure oil pump and the low-pressure oil pump to rotate coaxially.
In some embodiments, at least one of the plurality of mechanisms to be lubricated is provided with a temperature sensor, the hydraulic system further comprising: and the controller is respectively connected with the temperature sensor and the oil pump motor, and controls the rotating speed of the oil pump motor according to the temperature value detected by the temperature sensor.
In some embodiments, the hydraulic system of the hybrid transmission further comprises: the main regulating valve is connected in series on the pressure oil circuit and used for regulating the oil pressure in the pressure oil circuit; and the safety valve is connected in series on the lubricating oil path and is used for adjusting the oil pressure in the lubricating oil path.
In some embodiments, the hydraulic system of the hybrid transmission further comprises: and one end of the communication oil way is connected with the main regulating valve, the other end of the communication oil way is connected with the lubricating oil way, a one-way valve is connected to the communication oil way in series, and the one-way valve is constructed to enable oil in the communication oil way to flow towards the lubricating oil way from the main regulating valve in a one-way mode.
Further, the pressure oil passage includes: the parking device comprises a main oil way, a first branch and a second branch, wherein one end of the main oil way is connected with the high-pressure oil pump, the other end of the main oil way is connected with one end of the first branch and one end of the second branch in parallel, the other end of the first branch is connected with a parking oil cavity of the parking mechanism, and the other end of the second branch is connected with a piston cavity of the clutch; the pressure oil circuit is connected with a reversing assembly in series, the reversing assembly is located at the downstream of the main adjusting valve along the flow direction of the oil circuit, and the reversing assembly is used for enabling the first branch circuit and the second branch circuit to be communicated with the main oil circuit in a switchable mode.
Further, the reversing assembly comprises: the first switch valve is connected in series with the first branch circuit, and the second switch valve is connected in series with the second branch circuit.
Further, the hydraulic system has a parking oil chamber oil supply mode and a piston chamber oil supply mode, the main regulation valve and the first switching valve are open and the second switching valve and the check valve are closed in the parking oil chamber oil supply mode, the main regulation valve, the second switching valve and the check valve are open and the first switching valve is closed in the piston chamber oil supply mode.
Still further, the lubrication oil passage includes: the lubricating device comprises a main lubricating path and a plurality of lubricating branches, wherein one end of the main lubricating path is connected with the low-pressure oil pump, the lubricating branches are connected in parallel at the other end of the main lubricating path, the lubricating branches are in one-to-one correspondence and communication with the mechanisms to be lubricated, and each lubricating branch is provided with a throttling hole.
Still further, a plurality of the mechanisms to be lubricated include: at least two of the gear system, the generator, the motor, the bearing system, and the clutch lubrication mechanism.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a hydraulic schematic of a hydraulic system of a hybrid transmission according to an embodiment of the present invention;
FIG. 2 is a hydraulic schematic diagram of the hydraulic system of the hybrid transmission shown in FIG. 1 when the park condition needs to be released;
FIG. 3 is a hydraulic schematic of the hydraulic system of the hybrid transmission illustrated in FIG. 1 during electric-only travel;
FIG. 4 is a hydraulic schematic diagram of the hydraulic system of the hybrid transmission illustrated in FIG. 1 with the clutches engaged.
Reference numerals:
the hydraulic control system comprises an oil tank 1, a suction filter 2, a high-pressure oil pump 3, a first oil pressure sensor 4, an oil temperature sensor 5, a low-pressure oil pump 6, an oil pump motor 7, a second oil pressure sensor 8, a safety valve 9, a gear system 10, a gear system throttling hole 11, a generator 12, a generator temperature sensor 13, a generator throttling hole 14, a motor temperature sensor 15, a motor 16, a motor throttling hole 17, a bearing system throttling hole 18, a bearing system 19, an oil cooler 20, a one-way valve 21, a main adjusting valve 22, a main adjusting electromagnetic valve 23, a second switching valve 24, a first switching valve 25, a parking locking mechanism 26, a parking mechanism 27, a clutch lubricating mechanism 28, a clutch lubricating mechanism throttling hole 29, a piston cavity 30, a lubricating oil path 31, a pressure oil path 32, a first branch path 33, a second branch path 34 and a communication oil path 35.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A hydraulic system 100 of a hybrid transmission according to an embodiment of the present invention is described below with reference to fig. 1 to 4.
The hydraulic system 100 of a hybrid transmission according to an embodiment of the present invention includes: high-pressure oil pump 3, low-pressure oil pump 6, oil tank 1, lubricating oil path 31, and pressure oil path 32.
Specifically, an inlet of the high-pressure oil pump 3 and an inlet of the low-pressure oil pump 6 are both connected to the oil tank 1, one end of the lubricating oil path 31 is connected to an outlet of the low-pressure oil pump 6, the other end of the lubricating oil path 31 is respectively connected to a plurality of mechanisms to be lubricated for supplying lubricating oil to the plurality of mechanisms to be lubricated, one end of the pressure oil path 32 is connected to an outlet of the high-pressure oil pump 3, and the other end of the pressure oil path 32 is connected to a parking oil chamber of the parking mechanism 27 and a piston chamber 30 of the clutch.
As shown in fig. 1, the lower end of the lubricating oil path 31 is connected to the outlet of the low-pressure oil pump 6, the upper ends of the lubricating oil paths 31 are respectively connected to a plurality of mechanisms to be lubricated, the low-pressure oil pump 6 supplies oil to the plurality of mechanisms to be lubricated through the lubricating oil path 31, the lower end of the pressure oil path 32 is connected to the outlet of the high-pressure oil pump 3, the upper end of the pressure oil path 32 is connected to the parking oil chamber of the parking mechanism 27 and the piston chamber 30 of the clutch, and the high-pressure oil pump 3 supplies oil to the parking mechanism 27 and the piston chamber 30 of the clutch through the pressure oil path 32. Therefore, the hydraulic system 100 of the hybrid transmission is simple, convenient to control, low in production cost and high in reliability.
According to the hydraulic system 100 of the hybrid transmission provided by the embodiment of the invention, the high-pressure oil pump 3 and the low-pressure oil pump 6 which are connected with the oil tank 1 are arranged, so that oil supply can be realized as required, the control is simple, the oil supply efficiency of the hydraulic system 100 is improved, the high-pressure oil pump 3 is connected with the pressure oil path 32, and the low-pressure oil pump 6 is connected with the lubricating oil path 31, so that the hydraulic system 100 is simplified, the production cost of the hydraulic system 100 is reduced, and the safety and reliability of the hydraulic system 100 are improved.
In some embodiments of the present invention, the hydraulic system 100 of the hybrid transmission further comprises: and the oil pump motor 7 is connected with the high-pressure oil pump 3 and the low-pressure oil pump 6 and is used for driving the high-pressure oil pump 3 and the low-pressure oil pump 6 to coaxially rotate. That is, the oil pump motor 7 drives the high-pressure oil pump 3 and the low-pressure oil pump 6 to supply oil to the pressure oil path 32 and the lubrication oil path 31, respectively, the high-pressure oil pump 3 and the low-pressure oil pump 6 are driven by the oil pump motor 7 at the same time, at this time, the rotating speeds of the high-pressure oil pump 3 and the low-pressure oil pump 6 are kept consistent, and the flow rates of the high-pressure oil pump 3 and the low-pressure oil pump 6 are changed along with the rotating speed of the oil pump motor 7 at the same time. Therefore, the control of the hydraulic system 100 is simplified, and the reliability is high.
In some embodiments of the present invention, at least one of the plurality of mechanisms to be lubricated is provided with a temperature sensor, and the hydraulic system 100 further comprises: and the controller is respectively connected with the temperature sensor and the oil pump motor 7, and controls the rotating speed of the oil pump motor 7 according to the temperature value detected by the temperature sensor. When the rotation speed of the oil pump motor 7 is high, the amount of oil supply to the lubricating oil passage 31 and the pressure oil passage 32 can be increased; when the rotation speed of the oil pump motor 7 is low, the amount of oil supplied to the lubricating oil passage 31 and the pressure oil passage 32 can be reduced. Therefore, oil supply on demand of the hydraulic system 100 is realized, and the practicability is high.
As shown in fig. 1, the temperature sensor includes: oil temperature sensor 5, generator temperature sensor 13, motor temperature sensor 15. An oil temperature sensor 5 is arranged at the oil tank 1, a generator temperature sensor 13 is arranged at the generator 12, and a motor temperature sensor 15 is arranged at the motor 16. The oil temperature sensor 5 detects the oil temperature at the oil tank 1, the generator temperature sensor 13 detects the stator temperature of the generator 12, the motor temperature sensor 15 detects the stator temperature of the motor 16, the first oil pressure sensor 4 detects the oil pressure output by the high-pressure oil pump 3, and the second oil pressure sensor 8 detects the oil pressure output by the low-pressure oil pump 6.
In some embodiments of the present invention, the hydraulic system 100 of the hybrid transmission further comprises: a main regulator valve 22 and a safety valve 9. The main regulator valve 22 is connected in series to the pressure oil passage 32 to regulate the oil pressure in the pressure oil passage 32, and the relief valve 9 is connected in series to the lubrication oil passage 31 to regulate the oil pressure in the lubrication oil passage 31. As shown in fig. 1, the main regulator valve 22 is located at the outlet position of the high-pressure oil pump 3, and the relief valve 9 is located at the outlet position of the low-pressure oil pump 6. Thus, by providing the main regulator valve 22 and the relief valve 9, the safety of the hydraulic system 100 of the hybrid transmission is improved, and the reliability of the system in use is ensured.
In some embodiments of the present invention, the hydraulic system 100 of the hybrid transmission further comprises: and a communication oil passage 35, one end of the communication oil passage 35 being connected to the main regulator valve 22, and the other end of the communication oil passage 35 being connected to the lubrication oil passage 31, a check valve 21 being connected in series to the communication oil passage 35, the check valve 21 being configured to allow oil in the communication oil passage 35 to flow in one direction from the main regulator valve 22 toward the lubrication oil passage 31. As shown in fig. 1, the right end of the communication oil passage 35 is connected to the main regulator valve 22, the left end of the communication oil passage 35 is connected to the lubricating oil passage 31, and the check valve 21 permits only one-way flow of oil in the communication oil passage 35 from right to left. Thus, the oil in the pressure oil path 32 can flow to the lubricating oil path 31 through the communicating oil path 35 when necessary, so that the oil supply of the hydraulic system 100 of the hybrid transmission is realized as required, the connecting structure is simplified, and the control is convenient.
In some embodiments, pressure oil path 32 includes: the hydraulic control system comprises a main oil path, a first branch 33 and a second branch 34, wherein one end of the main oil path is connected with the high-pressure oil pump 3, the other end of the main oil path is connected with one end of the first branch 33 and one end of the second branch 34 in parallel, the other end of the first branch 33 is connected with a parking oil chamber of the parking mechanism 27, the other end of the second branch 34 is connected with a piston chamber 30 of a clutch, a reversing assembly is connected to the pressure oil path 32 in series and is located at the downstream of the main adjusting valve 22 along the flow direction of the oil path, and the reversing assembly is used for enabling the first branch 33 and the second branch 34 to be communicated with the main oil path in a switchable manner.
Referring to fig. 1, the lower end of the main oil passage is connected to the high pressure oil pump 3, the lower ends of the first branch passage 33 and the second branch passage 34 are connected in parallel to the upper end of the main oil passage, the upper end of the first branch passage 33 is connected to the parking oil chamber of the parking mechanism 27, the upper end of the second branch passage 34 is connected to the piston chamber 30 of the clutch, and the reversing assembly is located at the connection between the main oil passage and the first branch passage 33 and the second branch passage 34. Therefore, the pressure oil path 32 is simple in composition and convenient to control, and oil can be supplied according to different requirements.
Further, the reversing assembly comprises: a first switch valve 25 and a second switch valve 24, wherein the first switch valve 25 is connected in series with the first branch 33, and the second switch valve 24 is connected in series with the second branch 34. Therefore, the reversing assembly is simple in structure and convenient to control.
In some embodiments of the present invention, the hydraulic system 100 has a parking oil chamber oil supply mode and a piston chamber 30 oil supply mode, the main regulator valve 22 and the first on-off valve 25 are opened and the second on-off valve 24 and the check valve 21 are closed in the parking oil chamber oil supply mode of the hydraulic system 100, and the main regulator valve 22, the second on-off valve 24 and the check valve 21 are opened and the first on-off valve 25 is closed in the piston chamber 30 oil supply mode of the hydraulic system 100. Thus, the hydraulic system 100 realizes oil supply as required, avoids resource waste, and has high safety factor and good reliability.
In some embodiments of the present invention, the lubrication oil path 31 includes: the lubricating device comprises a main lubricating path and a plurality of lubricating branches, wherein one end of the main lubricating path is connected with a low-pressure oil pump 6, the lubricating branches are connected to the other end of the main lubricating path in parallel, the lubricating branches are in one-to-one correspondence and communication with a plurality of mechanisms to be lubricated, and each lubricating branch is provided with a throttling hole. Therefore, the oil quantity in the lubricating oil path 31 can be proportionally distributed to each mechanism to be lubricated according to the size of the throttling hole, so that the resource is saved, the number of hydraulic valves is reduced, and the leakage quantity is reduced.
Further, an oil cooler 20 is connected in series on the main lubrication path. When the temperature detected by the oil temperature sensor or the generator temperature sensor 13 or the motor temperature sensor 15 exceeds a set temperature, the controller controls the oil pump motor 7 to increase the rotating speed, so that the high-pressure oil pump 3 and the low-pressure oil pump 6 suck and output more oil, the oil cooled by the oil cooler 20 is increased, the temperature of the generator 12 and the temperature of the motor 16 are reduced by reducing the temperature of the oil, and finally the temperature of the hydraulic system 100 of the hybrid transmission is reduced.
In some embodiments of the invention, the plurality of mechanisms to be lubricated comprises: at least two of the gear system 10, the generator 12, the electric machine 16, the bearing system 19, and the clutch lubrication mechanism 28. Referring to fig. 1, the mechanism to be lubricated includes: the gear system 10, the generator 12, the motor 16, the bearing system 19 and the clutch lubricating mechanism 28, so that the hydraulic system 100 is simple in structure and production cost is reduced.
In some embodiments, the suction filter 2 is connected in series between the oil tank 1 and the high-pressure oil pump 3 and the low-pressure oil pump 6, and before the oil enters the high-pressure oil pump 3 and the low-pressure oil pump 6, the oil is filtered by the suction filter 2, so that impurities in the oil are reduced, the stable operation of the high-pressure oil pump 3 and the low-pressure oil pump 6 is ensured, the lubricating oil path 31 and the pressure oil path 32 are protected, and the damage of the impurities to the high-pressure oil pump 3, the low-pressure oil pump 6, the lubricating oil path 31 and the pressure oil path 32 is avoided.
A hydraulic system 100 of a hybrid transmission according to an embodiment of the present invention will be described with reference to fig. 1 to 4.
Referring to fig. 1, the high-pressure oil pump 3 and the low-pressure oil pump 6 are simultaneously driven by the oil pump motor 7, the rotation speeds of the high-pressure oil pump 3 and the low-pressure oil pump 6 are kept consistent, the flow rates of the high-pressure oil pump 3 and the low-pressure oil pump 6 vary with the rotation speed of the oil pump motor 7, and the oil amount of the low-pressure oil pump 6 is entirely used for cooling the lubrication gear system 10, the generator 12, the motor 16, the bearing system 19 and the clutch lubrication mechanism 28, wherein the lubrication cooling oil amount is distributed proportionally according to the sizes of the gear system orifice 11, the generator orifice 14, the motor orifice 17, the bearing system orifice 18 and the clutch lubrication mechanism orifice 29. The main adjusting electromagnetic valve 23 adjusts the opening pressure of the main adjusting valve 22 so as to control the output oil pressure of the high-pressure oil pump 3, the second switch valve 24 controls oil to flow to the piston cavity 30 of the clutch, the second switch valve 24 controls oil to flow to the parking oil cavity of the parking mechanism 27, the parking oil cavity of the parking mechanism 27 controls the locking of the parking mechanism 27, the main adjusting electromagnetic valve 23 controls and adjusts the opening pressure of the main adjusting valve 22 so as to control and adjust the output oil pressure of the high-pressure oil pump 3, and the safety valve 9 limits the output oil pressure of the low-pressure oil pump 6 so as to prevent the pressure of the lubricating and cooling system from being too high.
Referring to fig. 2, when the vehicle is released from the parking state, the oil pump motor 7 rotates and drives the high-pressure oil pump 3 and the low-pressure oil pump 6 to suck oil from the oil tank 1, the oil is filtered by the suction filter 2 and enters the high-pressure oil pump 3 and the low-pressure oil pump 6, the main adjusting solenoid valve 23 controls and adjusts the main adjusting valve 22, so that the output oil pressure of the high-pressure oil pump 3 is controlled and adjusted to meet the action requirement of the parking mechanism 27, the parking locking mechanism 26 is powered on to act, the locking state of the parking mechanism 27 is controlled and released, the output oil of the high-pressure oil pump 3 flows into the parking mechanism 27 through the first switch valve 25, the vehicle is released from the parking state, the parking locking mechanism 26 is powered off and reset, the state of the parking mechanism 27 is locked, and the vehicle is released from the parking state. The output oil of the low-pressure oil pump 6 cools the lubrication gear system 10, the generator 12, the motor 16, the bearing system 19, and the clutch lubrication mechanism 28, respectively, in preparation for the vehicle running.
Referring to fig. 3, when the vehicle is running in a pure electric state, the oil pump motor 7 rotates and drives the high-pressure oil pump 3 and the low-pressure oil pump 6 to suck oil from the oil tank 1, the oil is filtered by the suction filter 2 and then enters the high-pressure oil pump 3 and the low-pressure oil pump 6, the main regulating valve 22 controls and regulates the output oil pressure of the high-pressure oil pump 3 to be the lowest pressure, the output oil of the high-pressure oil pump 3 sequentially flows through the main regulating valve 22 and the check valve 21 and then merges with the output oil of the low-pressure oil pump 6, and at this time, the high-pressure oil pump 3 and the low-pressure oil pump 6 cool the lubricating gear system 10, the generator 12, the motor 16, the bearing system 19 and the clutch lubricating mechanism 28 together.
Referring to fig. 4, when the vehicle needs clutch combination, the oil pump motor 7 rotates and drives the high-pressure oil pump 3 and the low-pressure oil pump 6 to suck oil from the oil tank 1, the oil is filtered by the suction filter 2 and enters the high-pressure oil pump 3 and the low-pressure oil pump 6, the main adjusting solenoid valve 23 controls and adjusts the main adjusting valve 22, so that the output oil pressure of the high-pressure oil pump 3 is controlled and adjusted to meet the combination requirement of the clutch lubricating mechanism 28, the second switch valve 24 is electrified to act, the output oil of the high-pressure oil pump 3 flows into the piston cavity 30 of the clutch after passing through the second switch valve 24, the clutch lubricating mechanism 28 combines to transmit torque, the engine can participate in driving the vehicle, and the redundant oil passes through the main adjusting valve 22 and the one-way valve 21 and then is merged with the output oil of the low-pressure oil pump 6. The surplus oil output by the high-pressure oil pump 3 and the output oil of the low-pressure oil pump 6 jointly cool the lubrication gear system 10, the generator 12, the motor 16, the bearing system 19 and the clutch lubrication mechanism 28.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A hydraulic system of a hybrid transmission, comprising:
the oil pump comprises a high-pressure oil pump, a low-pressure oil pump and an oil tank, wherein an inlet of the high-pressure oil pump and an inlet of the low-pressure oil pump are connected with the oil tank;
one end of the lubricating oil way is connected with an outlet of the low-pressure oil pump, and the other end of the lubricating oil way is respectively connected with a plurality of mechanisms to be lubricated and used for supplying lubricating oil to the mechanisms to be lubricated;
and one end of the pressure oil way is connected with an outlet of the high-pressure oil pump, and the other end of the pressure oil way is connected with a parking oil cavity of the parking mechanism and a piston cavity of the clutch.
2. The hydraulic system of a hybrid transmission according to claim 1, further comprising: and the oil pump motor is connected with the high-pressure oil pump and the low-pressure oil pump and is used for driving the high-pressure oil pump and the low-pressure oil pump to rotate coaxially.
3. The hydraulic system of a hybrid transmission according to claim 2, wherein at least one of a plurality of the mechanisms to be lubricated is provided with a temperature sensor, the hydraulic system further comprising: and the controller is respectively connected with the temperature sensor and the oil pump motor, and controls the rotating speed of the oil pump motor according to the temperature value detected by the temperature sensor.
4. The hydraulic system of a hybrid transmission according to any one of claims 1 to 3, further comprising:
the main regulating valve is connected in series on the pressure oil circuit and used for regulating the oil pressure in the pressure oil circuit;
and the safety valve is connected in series on the lubricating oil path and is used for adjusting the oil pressure in the lubricating oil path.
5. The hydraulic system of a hybrid transmission according to claim 4, further comprising: and one end of the communication oil way is connected with the main regulating valve, the other end of the communication oil way is connected with the lubricating oil way, a one-way valve is connected to the communication oil way in series, and the one-way valve is constructed to enable oil in the communication oil way to flow towards the lubricating oil way from the main regulating valve in a one-way mode.
6. The hydraulic system of a hybrid transmission according to claim 5, wherein the pressure oil passage includes: the parking device comprises a main oil way, a first branch and a second branch, wherein one end of the main oil way is connected with the high-pressure oil pump, the other end of the main oil way is connected with one end of the first branch and one end of the second branch in parallel, the other end of the first branch is connected with a parking oil cavity of the parking mechanism, and the other end of the second branch is connected with a piston cavity of the clutch;
the pressure oil circuit is connected with a reversing assembly in series, the reversing assembly is located at the downstream of the main adjusting valve along the flow direction of the oil circuit, and the reversing assembly is used for enabling the first branch circuit and the second branch circuit to be communicated with the main oil circuit in a switchable mode.
7. The hydraulic system of a hybrid transmission of claim 6, wherein the reversing assembly includes: the first switch valve is connected in series with the first branch circuit, and the second switch valve is connected in series with the second branch circuit.
8. The hydraulic system of a hybrid transmission according to claim 7, having a parking oil chamber oil supply mode and a piston chamber oil supply mode, the hydraulic system having the main regulator valve and the first switching valve open and the second switching valve and the check valve closed in the parking oil chamber oil supply mode, the hydraulic system having the main regulator valve, the second switching valve and the check valve open and the first switching valve closed in the piston chamber oil supply mode.
9. The hydraulic system of a hybrid transmission according to any one of claims 1 to 3, wherein the lubricating oil passage includes: the lubricating device comprises a main lubricating path and a plurality of lubricating branches, wherein one end of the main lubricating path is connected with the low-pressure oil pump, the lubricating branches are connected in parallel at the other end of the main lubricating path, the lubricating branches are in one-to-one correspondence and communication with the mechanisms to be lubricated, and each lubricating branch is provided with a throttling hole.
10. The hydraulic system of a hybrid transmission according to any one of claims 1 to 3, wherein a plurality of the mechanisms to be lubricated include: at least two of the gear system, the generator, the motor, the bearing system, and the clutch lubrication mechanism.
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| CN202011062878.XA CN114321348A (en) | 2020-09-30 | 2020-09-30 | Hydraulic system of hybrid transmission |
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| CN202011062878.XA CN114321348A (en) | 2020-09-30 | 2020-09-30 | Hydraulic system of hybrid transmission |
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| CN114321348A true CN114321348A (en) | 2022-04-12 |
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| CN202011062878.XA Pending CN114321348A (en) | 2020-09-30 | 2020-09-30 | Hydraulic system of hybrid transmission |
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| Country | Link |
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| CN (1) | CN114321348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115574078A (en) * | 2022-12-08 | 2023-01-06 | 盛瑞传动股份有限公司 | Oil path control device, oil path system and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120085441A1 (en) * | 2010-10-12 | 2012-04-12 | Hyundai Motor Company | Oil supply system of automatic transmission |
| CN204592816U (en) * | 2015-05-11 | 2015-08-26 | 中国石油大学(华东) | A kind of novel vibrating screen bearing lubrication system |
| CN105864424A (en) * | 2016-04-07 | 2016-08-17 | 宁波上中下自动变速器有限公司 | Double-clutch transmission hydraulic control system |
| CN110469663A (en) * | 2019-07-26 | 2019-11-19 | 中国第一汽车股份有限公司 | A kind of transmission hydraulic control system and vehicle |
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2020
- 2020-09-30 CN CN202011062878.XA patent/CN114321348A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120085441A1 (en) * | 2010-10-12 | 2012-04-12 | Hyundai Motor Company | Oil supply system of automatic transmission |
| CN204592816U (en) * | 2015-05-11 | 2015-08-26 | 中国石油大学(华东) | A kind of novel vibrating screen bearing lubrication system |
| CN105864424A (en) * | 2016-04-07 | 2016-08-17 | 宁波上中下自动变速器有限公司 | Double-clutch transmission hydraulic control system |
| CN110469663A (en) * | 2019-07-26 | 2019-11-19 | 中国第一汽车股份有限公司 | A kind of transmission hydraulic control system and vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115574078A (en) * | 2022-12-08 | 2023-01-06 | 盛瑞传动股份有限公司 | Oil path control device, oil path system and vehicle |
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