Hydraulic oil way of hybrid power gearbox

Abstract

The utility model discloses a hydraulic oil circuit of a hybrid power gearbox, which belongs to the technical field of automobile parts and comprises an EM2 motor stator and an EM2 motor rotor, and a plurality of groups of throttling ports arranged in the gearbox can play a role in supplying oil through a lubricating oil supply port and a clutch oil supply port. Lubricating oil passes through a lubricating oil cooling opening, a first deep hook ball bearing, a rear cover, a transmission shell, an EM2 driving shaft, a front oil guide pipe, a rear oil guide pipe, an input shaft and an input flange, and a throttling opening is formed between the input shaft and the input flange. According to the hybrid gearbox, the lubricating oil way system is arranged, it is guaranteed that each lubricating point can obtain enough lubricating oil, through structural arrangement of parts, it is guaranteed that the lubricating oil way system can operate reliably, all cooling and lubricating points of the lubricating oil way are fully cooled and lubricated by setting reasonable pressure and utilizing the effect of centrifugal force, and the structural arrangement of the whole hybrid gearbox is more reasonable.

Description

Technical Field

[0001] This invention relates to the field of automotive parts, and in particular to a hydraulic circuit for a hybrid power transmission. Background Technology

[0002] With the continuous popularization of new energy vehicle technologies, improving fuel efficiency and reducing fuel consumption have become important means to enhance the competitiveness of the automotive market. In the transmission structure of hybrid vehicles, the general DHT (Dual-Hybrid Transmission) hybrid hydraulic system differs from the P-architecture hybrid technology. Its advantages lie in the coordination of dual motors, which allows for multiple gears to be used under different operating conditions, thereby increasing the engine's operating efficiency. At the same time, the transmission is compact, inexpensive, and has significant advantages in terms of efficiency and fuel saving.

[0003] Currently, during the use of traditional hybrid transmissions, various parts will wear down, thereby reducing the transmission's lifespan. To address this wear, traditional transmissions use lubricating oil, but the distribution of this lubricating oil in the transmission circuit is not optimal. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a hydraulic circuit for a hybrid power transmission, overcoming the deficiencies of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic oil circuit for a hybrid power transmission, including an EM2 motor stator;

[0006] The rear cover is located on the outside of the stator of the EM2 motor. A rotor bracket is installed on the inner wall of the rear cover, and the rotor of the EM2 motor is installed on the inner wall of the rotor bracket.

[0007] The transmission housing is installed inside the rear cover. The stator of the EM2 motor is installed on the inner wall of the transmission housing. The stator and rotor of the EM2 motor are assembled and fitted together by components to form the motor EM2.

[0008] The lubricating oil inlet and the clutch oil inlet are located on the inner wall of the rear cover;

[0009] A fourth dynamic seal is mounted on the inner wall of the rear cover, an oil guide pipe is mounted on the inner wall of the fourth dynamic seal, a rotary variable pressure ring is rotatably mounted on the inner wall of the rear cover on the side of the lubricating oil supply port, a third dynamic seal is mounted on the outer wall of the rotary variable pressure ring, the outer wall of the third dynamic seal is rotatably connected with the inner wall of the rear cover, a second oil guide pipe is mounted on the inner wall of the oil guide pipe away from the rear cover, the outer wall of the second dynamic seal is mounted on the second oil guide pipe, a first deep groove ball bearing is mounted on the inner wall of the rear cover, a snap ring is mounted on the inner wall of the rear cover on the side of the first deep groove ball bearing, an EM2 drive shaft is mounted on the inner wall of the first deep groove ball bearing, a second needle bearing is mounted on the inner wall of the EM2 drive shaft, an input shaft is mounted on the inner wall of the second needle bearing, the rear oil guide pipe is mounted in the input shaft, a clutch oil inlet is arranged between the rear oil guide pipe and the input shaft, a lubricating oil cooling port is formed in the inner wall of the EM2 drive shaft on the side of the first deep groove ball bearing, a connecting bearing is mounted on the outer wall of the input shaft away from the rear oil guide pipe, an input flange is mounted on the outer wall of the connecting bearing, and a group of throttle ports are respectively formed in the inner wall of the input shaft and the inner wall of the input flange.

[0010] By adopting the above technical scheme, in use, the lubricating oil supply port and the clutch oil supply port can supply oil, the lubricating oil passes through the lubricating oil cooling port, the first deep groove ball bearing, the rear cover, the transmission housing, the EM2 drive shaft, the front oil guide pipe, the rear oil guide pipe, the input shaft and the input flange, throttle ports are arranged between the input shaft and the input flange, the mixed power transmission gearbox hydraulic oil circuit reasonably distributes the lubricating flow by setting the size of the throttle ports, ensures that each lubricating point can obtain sufficient lubricating oil, and the structure of the parts is arranged to ensure that the lubricating oil circuit system can reliably operate. The lubricating oil circuit is arranged to have a reasonable pressure and utilize the centrifugal force to fully cool and lubricate each cooling and lubricating point, and the structure of the mixed power transmission gearbox is more reasonable.

[0011] As a preferred technical scheme of the present application, the outer wall of the input flange is mounted with a second deep groove ball bearing, the outer wall of the second deep groove ball bearing is mounted with a clutch housing, and an end seal is mounted between the input flange and the clutch housing on the outer side of the second deep groove ball bearing.

[0012] By adopting the above technical scheme, the input flange can move on the clutch housing through the second deep groove ball bearing, and the end seal can seal the end of the input flange and the clutch housing.

[0013] As a preferred technical scheme of the present application, the inner wall of the clutch housing is mounted with a second tapered bearing, the inner wall of the second tapered bearing is mounted with an output shaft, and an output shaft lubricating cooling port is formed in the inner wall of the clutch housing on the side of the output shaft.

[0014] By adopting the technical scheme, the output shaft lubrication cooling port is arranged to lubricate the output shaft in the clutch housing.

[0015] As a preferred technical scheme of the present application, the outer wall of the EM2 drive shaft is provided with a third deep groove ball bearing, the third deep groove ball bearing is arranged on the transmission housing, the outer wall of the input shaft is embedded with a first dynamic seal, the first dynamic seal is arranged on the inner wall of the EM2 drive shaft, the outer wall of the input shaft is provided with a shaft sleeve, the outer wall of the shaft sleeve is provided with a first needle bearing, the outer wall of the first needle bearing is provided with a second input shaft gear, the end surface of the shaft sleeve is embedded with a second thrust bearing, and the second thrust bearing is connected with the EM2 drive shaft.

[0016] By adopting the technical scheme, the third deep groove ball bearing is arranged to facilitate the movement of the EM2 drive shaft outside the transmission housing, the shaft sleeve and the first needle bearing are arranged to facilitate the movement of the second input shaft gear, and the shaft sleeve and the second thrust bearing are arranged to facilitate the movement of the second input shaft gear and the EM2 drive shaft.

[0017] As a preferred technical scheme of the present application, the second input shaft gear is engaged with a first gear, the first gear is arranged on the outer wall of the output shaft, the outer wall of the output shaft on one side of the first gear is provided with a second gear, and the second gear is engaged with the EM2 drive shaft.

[0018] By adopting the technical scheme, the second input shaft gear is engaged with the first gear, and the second gear is engaged with the EM2 drive shaft, which facilitates mutual rotation.

[0019] As a preferred technical scheme of the present application, the outer wall of the input shaft on one side of the second input shaft gear is provided with a synchronizer hub, the inner wall of the synchronizer hub is provided with a combination tooth, the outer wall of the synchronizer hub is provided with a synchronizer ring, the outer wall of the input shaft on one side of the synchronizer hub is provided with a first input shaft gear, the first input shaft gear is engaged with a third gear, and the third gear is arranged on the outer wall of the output shaft.

[0020] By adopting the technical scheme, the input shaft can be used to install the synchronizer hub, the combination tooth, the synchronizer ring and the third gear.

[0021] As a preferred technical scheme of the present application, the fourth gear is installed on the outer wall of the input shaft on the side of the first input shaft gear, the clutch outer hub is installed on the inner wall of the clutch housing on the side of the fourth gear, the clutch piston is installed on the inner wall of the clutch outer hub, and the first D-shaped ring is embeddedly installed on the inner wall of the fourth gear.

[0022] By adopting the above technical scheme, through the fourth gear, the clutch outer hub, the clutch piston, the first D-shaped ring and other structures, remarkable beneficial effects are achieved in power transmission, shift smoothness, sealing performance, system synergy efficiency and noise and vibration reduction, thereby providing strong support for performance improvement and reliability guarantee of the hybrid vehicle.

[0023] As a preferred technical scheme of the present application, the first D-shaped ring is installed on the inner wall of the clutch outer hub, the clutch inner hub is installed on the inner wall of the clutch housing, the oil collecting disc is installed on the inner wall of the clutch inner hub on the side of the second deep groove ball bearing, a group of steel sheets are installed between the clutch outer hub and the clutch inner hub, the friction plate is installed between the steel sheet and the clutch inner hub, the clutch baffle is installed on the inner wall of the clutch outer hub, the clutch spring is installed on the side of the clutch baffle, the clutch spring is installed on the clutch inner hub, and the first thrust bearing is installed on the end face between the input shaft and the input flange.

[0024] By adopting the above technical scheme, through the first D-shaped ring, the clutch inner hub, the steel sheet, the friction plate, the clutch baffle, the clutch spring and the first thrust bearing and other structures, remarkable beneficial effects are achieved in sealing performance, clutch power transmission and control, axial load capacity and system synergy efficiency, thereby providing strong support for performance improvement and reliability guarantee of the hybrid vehicle.

[0025] As a preferred technical scheme of the present application, the positioning sleeve is installed on the inner wall of the output shaft on the side of the second gear, and the positioning sleeve is installed on the transmission housing.

[0026] By adopting the above technical scheme, the transmission housing can fix the positioning sleeve, and the positioning sleeve can position the output shaft.

[0027] As a preferred technical scheme of the present application, the first tapered bearing is installed on the outer wall of the output shaft on the side of the second gear, and the outer wall of the first tapered bearing is installed on the transmission housing.

[0028] By adopting the above technical scheme, the first tapered bearing can facilitate the movement of the output shaft inside the transmission housing.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] The application can play the role of oil supply through lubricating oil supply ports and clutch oil supply ports, and the lubricating oil passes between a first deep groove ball bearing, a rear cover, a transmission housing, an EM2 drive shaft, a front oil guide pipe, a rear oil guide pipe, an input shaft and an input flange through a lubricating oil cooling port, and a throttle port is arranged between the input shaft and the input flange, the mixed power transmission gearbox hydraulic oil circuit reasonably distributes the amount of lubricating flow through the setting of the throttle aperture size, and ensures that each lubricating point can obtain sufficient lubricating oil, meanwhile, through the structural arrangement of parts, it is ensured that the lubricating oil circuit system can reliably operate, and the lubricating oil circuit makes each cooling and lubricating point fully cooled and lubricated through the setting of reasonable pressure and the use of centrifugal force, and the structural arrangement of the whole mixed power transmission gearbox is more reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural section view of the application.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1, EM2 motor stator; 2, EM2 motor rotor; 3, rotor support; 4, rear cover; 5, first dynamic seal; 6, first deep groove ball bearing; 7, rear oil guide pipe; 8, second dynamic seal; 9, third dynamic seal; 10, rotary variable pressure ring; 11, EM2 drive shaft; 12, fourth dynamic seal; 13, front oil guide pipe; 14, snap ring; 15, transmission housing; 16, positioning sleeve; 17, first tapered bearing; 18, first gear; 19, second gear; 20, third gear; 21, second tapered bearing; 22, output shaft; 23, clutch housing; 24, clutch outer hub; 25, steel sheet; 26, friction plate; 27, clutch inner hub; 28, oil collecting disc; 29, second deep groove ball bearing; 30, end seal; 31, connecting bearing; 32, input flange; 33, first thrust bearing; 34, clutch baffle; 35, clutch spring; 36, first D-shaped ring; 37, clutch piston; 38, fourth gear; 39, first input shaft gear; 40, combined tooth; 41, synchronizer tooth hub; 42, synchronizer ring; 43, first needle bearing; 44, second input shaft gear; 45, shaft sleeve; 46, second thrust bearing; 47, second needle bearing; 48, input shaft; 49, third deep groove ball bearing; A, lubricating oil supply port; B, clutch oil supply port; C, output shaft lubricating cooling port; D, clutch oil inlet; H0, lubricating cooling port; H, throttle port. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0035] Please refer to Figure 1The application relates to a hybrid gearbox hydraulic oil circuit, which comprises an EM2 motor stator 1, a rear cover 4 arranged outside the EM2 motor stator 1, a rotor support 3 mounted on the inner wall of the rear cover 4, an EM2 motor rotor 2 mounted on the inner wall of the rotor support 3, a gearbox shell 15 mounted on the inner side of the rear cover 4, the EM2 motor stator 1 being mounted on the inner wall of the gearbox shell 15, the EM2 motor stator 1 and the EM2 motor rotor 2 being combined into a motor EM2 through the mounting cooperation of parts, a lubricating oil supply port A and a clutch oil supply port B arranged on the inner wall of the rear cover 4, a fourth dynamic seal 12 mounted on the inner wall of the rear cover 4, a front oil guide pipe 13 mounted on the inner wall of the fourth dynamic seal 12, a rotary variable pressure ring 10 rotatably mounted on the inner wall of the rear cover 4 at the side of the lubricating oil supply port A, a third dynamic seal 9 sleeved and mounted on the outer wall of the rotary variable pressure ring 10, the outer wall of the third dynamic seal 9 being rotatably connected with the inner wall of the rear cover 4, a second dynamic seal 8 sleeved and mounted on the inner wall of the front oil guide pipe 13 away from the rear cover 4, a rear oil guide pipe 7 mounted on the outer wall of the second dynamic seal 8, a first deep groove ball bearing 6 mounted on the inner wall of the rear cover 4, a snap ring 14 mounted on the inner wall of the rear cover 4 at the side of the first deep groove ball bearing 6, an EM2 driving shaft 11 mounted on the inner wall of the first deep groove ball bearing 6, a second needle bearing 47 mounted on the inner wall of the EM2 driving shaft 11, an input shaft 48 mounted on the inner wall of the second needle bearing 47, the rear oil guide pipe 7 being mounted in the input shaft 48, a clutch oil inlet D being arranged between the rear oil guide pipe 7 and the input shaft 48, a lubricating oil cooling port H0 being formed in the inner wall of the EM2 driving shaft 11 at the side of the first deep groove ball bearing 6, a connecting bearing 31 mounted on the outer wall of the input shaft 48 away from the rear oil guide pipe 7, an input flange 32 mounted on the outer wall of the connecting bearing 31, a group of throttle ports H being formed in the inner wall of the input shaft 48 and the inner wall of the input flange 32 respectively, the lubricating oil supply port A and the clutch oil supply port B can supply oil, the lubricating oil passes through the lubricating oil cooling port H0, the first deep groove ball bearing 6, the rear cover 4, the gearbox shell 15, the EM2 driving shaft 11, the front oil guide pipe 13, the rear oil guide pipe 7, the input shaft 48 and the input flange 32, throttle ports H are arranged between the input shaft 48 and the input flange 32, the hybrid power gearbox hydraulic oil circuit can reasonably distribute the lubricating flow through the setting of the aperture size of the throttle ports H, each lubricating point can obtain sufficient lubricating oil, meanwhile, the structure arrangement of the parts ensures that the lubricating oil circuit system can reliably operate, the lubricating oil circuit can make each cooling lubricating point fully cooled and lubricated through the setting of reasonable pressure and the utilization of centrifugal force, and the structure arrangement of the whole hybrid gearbox is more reasonable.

[0036] Specifically, referring to Figure 1The outer wall of the input flange 32 is provided with a second deep groove ball bearing 29, the outer wall of the second deep groove ball bearing 29 is provided with a clutch housing 23, the input flange 32 located outside the second deep groove ball bearing 29 is provided with an end seal 30 between the clutch housing 23, the second deep groove ball bearing 29 can facilitate the movement of the input flange 32 on the clutch housing 23, and the end seal 30 can seal the end of the input flange 32 and the clutch housing 23. The outer wall of the EM2 drive shaft 11 is provided with a third deep groove ball bearing 49, the third deep groove ball bearing 49 is installed with the transmission housing 15, the outer wall of the input shaft 48 is embedded with a first dynamic seal 5, the first dynamic seal 5 is installed with the inner wall of the EM2 drive shaft 11, the outer wall of the input shaft 48 is provided with a shaft sleeve 45, the outer wall of the shaft sleeve 45 is provided with a first needle bearing 43, the outer wall of the first needle bearing 43 is provided with a second input shaft gear 44, the end face of the shaft sleeve 45 is embedded with a second thrust bearing 46, the second thrust bearing 46 is connected with the EM2 drive shaft 11, the third deep groove ball bearing 49 can facilitate the movement of the EM2 drive shaft 11 outside the transmission housing 15, the shaft sleeve 45 and the first needle bearing 43 facilitate the movement of the second input shaft gear 44, and the shaft sleeve 45 and the second thrust bearing 46 facilitate the movement of the second input shaft gear 44 and the EM2 drive shaft 11.

[0037] Specifically, refer to Figure 1 The inner wall of the clutch housing 23 is provided with a second tapered bearing 21, the inner wall of the second tapered bearing 21 is provided with an output shaft 22, the inner wall of the clutch housing 23 located on one side of the output shaft 22 is provided with an output shaft lubrication cooling port C, the output shaft lubrication cooling port C can lubricate the output shaft 22 inside the clutch housing 23, and the second tapered bearing 21 can facilitate the movement of the output shaft 22 inside the clutch housing 23.

[0038] Specifically, refer to Figure 1The second input shaft gear 44 is engaged with the first gear 18, the first gear 18 is installed on the outer wall of the output shaft 22, the second gear 19 is installed on the outer wall of the output shaft 22 on the side of the first gear 18, the second gear 19 is engaged with the EM2 driving shaft 11, through the engagement of the second input shaft gear 44 and the first gear 18, and the engagement of the second gear 19 and the EM2 driving shaft 11, it is convenient to drive each other to rotate, the synchronizer gear hub 41 is installed on the outer wall of the input shaft 48 on the side of the second input shaft gear 44, the inner wall of the synchronizer gear hub 41 is installed with the combination gear 40, the outer wall of the synchronizer gear hub 41 is installed with the synchronizer ring 42, the first input shaft gear 39 is installed on the outer wall of the input shaft 48 on the side of the synchronizer gear hub 41, the first input shaft gear 39 is engaged with the third gear 20, the third gear 20 is installed on the outer wall of the output shaft 22, through the input shaft 48, the synchronizer gear hub 41, the combination gear 40, the synchronizer ring 42 and the third gear 20 can play the role of installation.

[0039] Specifically, refer to Figure 1The outer wall of the input shaft 48 on the side of the first input shaft gear 39 is provided with a fourth gear 38, the inner wall of the clutch housing 23 on the side of the fourth gear 38 is provided with a clutch outer hub 24, the inner wall of the clutch outer hub 24 is provided with a clutch piston 37, the inner wall of the fourth gear 38 is embeddedly provided with a first D-shaped ring 36, and through the structures of the fourth gear 38, the clutch outer hub 24, the clutch piston 37, and the first D-shaped ring 36, remarkable beneficial effects are achieved in power transmission, shift smoothness, sealing performance, system synergy efficiency, and noise and vibration reduction, which provide strong support for performance improvement and reliability guarantee of the hybrid vehicle, the inner wall of the first D-shaped ring 36 is provided with the clutch outer hub 24, the inner wall of the clutch housing 23 is provided with a clutch inner hub 27, the inner wall of the clutch inner hub 27 on the side of the second deep groove ball bearing 29 is provided with an oil collecting disc 28, a group of steel sheets 25 are arranged between the clutch outer hub 24 and the clutch inner hub 27, friction sheets 26 are arranged between the steel sheets 25 and the clutch inner hub 27, the inner wall of the clutch outer hub 24 is provided with a clutch baffle 34, the side of the clutch baffle 34 is provided with a clutch spring 35, the clutch spring 35 is provided with the clutch inner hub 27, and a first thrust bearing 33 is arranged between the end face of the input shaft 48 and the input flange 32, through the structures of the first D-shaped ring 36, the clutch inner hub 27, the steel sheets 25, the friction sheets 26, the clutch baffle 34, the clutch spring 35, and the first thrust bearing 33, remarkable beneficial effects are achieved in sealing performance, clutch power transmission and control, axial load capacity, and system synergy efficiency, which provide strong support for performance improvement and reliability guarantee of the hybrid vehicle, the inner wall of the output shaft 22 on the side of the second gear 19 is provided with a positioning sleeve 16, the positioning sleeve 16 is provided with the transmission housing 15, the transmission housing 15 can fix the positioning sleeve 16, and the positioning sleeve 16 can position the output shaft 22, the outer wall of the output shaft 22 on the side of the second gear 19 is provided with a first tapered bearing 17, the outer wall of the first tapered bearing 17 is provided with the transmission housing 15, and the first tapered bearing 17 can facilitate the movement of the output shaft 22 in the transmission housing 15.

[0040] Working principle: in use, the EM2 motor stator 1 is installed in the inner wall of the transmission housing 15, the EM2 motor rotor 2 is installed outside the EM2 motor stator 1 through the rotor support 3, and the two cooperate to form the motor EM2. When the hybrid power system starts, the motor control system inputs electric energy to the EM2 motor stator 1 according to the vehicle driving demand. The electromagnetic field in the stator interacts with the permanent magnet in the rotor to generate electromagnetic torque, which drives the EM2 motor rotor 2 to rotate. The rotation of the M2 motor rotor 2 drives the EM2 drive shaft 11 to rotate. The EM2 drive shaft 11 is installed in the inner wall of the rear cover 4 through the first deep groove ball bearing 6 and is kept stable under the positioning action of the snap ring 14. At the same time, the second needle bearing 47 installed on the inner wall of the EM2 drive shaft 11 provides support for the input shaft 48, so that the input shaft 48 can rotate coaxially with the EM2 drive shaft 11;

[0041] Second input shaft gear transmission 44: the second input shaft gear 44 is installed on the outer wall of the input shaft 48 through the shaft sleeve 45 and the first needle bearing 43. The second input shaft gear 44 is engaged with the first gear 18 installed on the output shaft 22. When the input shaft 48 rotates with the EM2 drive shaft 11, the second input shaft gear 44 drives the first gear 18 to rotate, thereby driving the output shaft 22 to rotate,

[0042] First input shaft gear transmission 39: the first input shaft gear 39 is installed on the outer wall of the input shaft 48. The first input shaft gear 39 is engaged with the third gear 20 installed on the output shaft 22. Under the synergistic action of the synchronizer hub 41, the combination gear 40 and the synchronizing ring 42, the power connection or separation of the first input shaft gear 39 and the input shaft 48 can be realized, so as to select different gear transmission paths according to the vehicle driving conditions,

[0043] EM2 drive shaft 11 direct transmission: the output shaft 22 is provided with a second gear 19. The second gear 19 is directly engaged with the EM2 drive shaft 11. In some working conditions, such as high-speed driving of the vehicle, power can be directly transmitted to the second gear 19 through the EM2 drive shaft 11, thereby driving the output shaft 22 to rotate, reducing the gear transmission link and improving the transmission efficiency;

[0044] The rear cover 4 is provided with a lubricating oil supply port A and a clutch oil supply port B. Lubricating oil enters the hydraulic oil circuit system from the lubricating oil supply port A to provide lubricating oil for each part that needs lubrication,

[0045] Oil distribution: The lubricating oil is delivered to each lubrication point through the front oil guide pipe 13 and the rear oil guide pipe 7. The front oil guide pipe 13 is installed on the inner wall of the rear cover 4 through the fourth dynamic seal 12, and the rear oil guide pipe 7 is installed on the inner wall of the front oil guide pipe 13 through the second dynamic seal 8, which ensures that the lubricating oil will not leak during delivery. At the same time, the rotary variable pressure ring 10 can rotate on the inner wall of the rear cover 4 and ensure sealing through the third dynamic seal 9. The rotary variable pressure ring 10 can adjust the pressure and flow of the lubricating oil as needed. The lubricating oil passes through the first deep groove ball bearing 6, the second deep groove ball bearing 29, the third deep groove ball bearing 49, the first tapered bearing 17, the second tapered bearing 21, and other bearing parts to lubricate and cool the bearings. The bearings will generate friction heat during operation, and the flow of lubricating oil can carry away heat to reduce the temperature of the bearings, reduce the wear of the bearings, and prolong the service life of the bearings. During gear transmission, the lubricating oil is reasonably distributed to each gear meshing part through the throttle H, such as the meshing part of the second input shaft gear 44 and the first gear 18, the meshing part of the first input shaft gear 39 and the third gear 20, etc. The lubricating oil forms an oil film on the surface of the gears, reducing friction and wear between the gears, and carrying away the heat generated by gear meshing, ensuring the stability and reliability of gear transmission. The output shaft lubrication and cooling port C is opened on the inner wall of the clutch housing 23 to provide lubricating oil for the output shaft 22. The lubricating oil can lubricate and cool the output shaft 22 and the gears on it, ensuring the stability and reliability of the output shaft 22 during high-speed operation. The EM2 drive shaft 11 inner wall on one side of the first deep groove ball bearing 6 is provided with a lubricating oil cooling port H0. The lubricating oil enters the EM2 drive shaft 11 through this cooling port to cool the EM2 drive shaft 11 and reduce the temperature of the drive shaft due to high-speed rotation.

Claims

1. A hybrid transmission hydraulic circuit, characterized by: The EM2 motor stator (1) is provided outside the EM2 motor stator (1), the inner wall of the rear cover (4) is provided with a rotor support (3), the inner wall of the rotor support (3) is provided with an EM2 motor rotor (2); The transmission housing (15) is installed on the inner side of the rear cover (4), the EM2 motor stator (1) is installed on the inner wall of the transmission housing (15), and the EM2 motor stator (1) and the EM2 motor rotor (2) are connected through the installation of parts to form a motor EM2. The lubricating oil supply port (A) and the clutch oil supply port (B) are provided on the inner wall of the rear cover (4). The fourth dynamic seal (12) is installed on the inner wall of the rear cover (4), the inner wall of the fourth dynamic seal (12) is provided with a front oil pipe (13), the inner wall of the rear cover (4) on the side of the lubricating oil supply port (A) is rotatably provided with a rotary variable pressure ring (10), the outer wall of the rotary variable pressure ring (10) is sleeved and installed with a third dynamic seal (9), the outer wall of the third dynamic seal (9) is rotatably connected with the inner wall of the rear cover (4), the inner wall of the front oil pipe (13) away from the rear cover (4) is sleeved and installed with a second dynamic seal (8), the outer wall of the second dynamic seal (8) is installed with a rear oil pipe (7), the inner wall of the rear cover (4) is installed with a first deep groove ball bearing (6), the inner wall of the rear cover (4) on the side of the first deep groove ball bearing (6) is installed with a snap ring (14), the inner wall of the first deep groove ball bearing (6) is installed with an EM2 drive shaft (11), the inner wall of the EM2 drive shaft (11) is installed with a second needle roller bearing (47), the inner wall of the second needle roller bearing (47) is installed with an input shaft (48), the rear oil pipe (7) is installed in the input shaft (48), the rear oil pipe (7) and the input shaft (48) are provided with a clutch oil inlet (D), the inner wall of the EM2 drive shaft (11) on the side of the first deep groove ball bearing (6) is provided with a lubricating oil cooling port (H0), the outer wall of the input shaft (48) away from the rear oil pipe (7) is installed with a connecting bearing (31), the outer wall of the connecting bearing (31) is installed with an input flange (32), a group of throttle ports (H) are respectively arranged in the inner wall of the input shaft (48) and the inner wall of the input flange (32). The outer wall of the input flange (32) is installed with a second deep groove ball bearing (29), the outer wall of the second deep groove ball bearing (29) is installed with a clutch housing (23), and the end seal (30) is installed between the input flange (32) and the clutch housing (23) outside the second deep groove ball bearing (29).

2. The hydraulic oil circuit of a hybrid transmission according to claim 1, characterized in that: The inner wall of the clutch housing (23) is installed with a second tapered bearing (21), the inner wall of the second tapered bearing (21) is installed with an output shaft (22), and the inner wall of the clutch housing (23) on the side of the output shaft (22) is provided with an output shaft lubricating cooling port (C).

3. The hydraulic oil circuit of a hybrid transmission according to claim 2, wherein: ​ 4. The hydraulic oil circuit of a hybrid transmission according to claim 3, wherein: The outer wall of the EM2 drive shaft (11) is provided with a third deep groove ball bearing (49) mounted with the transmission housing (15), the outer wall of the input shaft (48) is embedded with a first dynamic seal (5) mounted with the inner wall of the EM2 drive shaft (11), the outer wall of the input shaft (48) is provided with a shaft sleeve (45), the outer wall of the shaft sleeve (45) is provided with a first needle bearing (43), the outer wall of the first needle bearing (43) is provided with a second input shaft gear (44), the end face of the shaft sleeve (45) is embedded with a second thrust bearing (46) connected with the EM2 drive shaft (11).

5. The hydraulic oil circuit of a hybrid transmission according to claim 4, wherein: The second input shaft gear (44) is engaged with a first gear (18) mounted on the outer wall of an output shaft (22), the outer wall of the output shaft (22) on one side of the first gear (18) is provided with a second gear (19) engaged with the EM2 drive shaft (11).

6. The hydraulic oil circuit of a hybrid transmission according to claim 5, wherein: The outer wall of the input shaft (48) on one side of the second input shaft gear (44) is provided with a synchronizer hub (41), the inner wall of the synchronizer hub (41) is provided with a combination tooth (40), the outer wall of the synchronizer hub (41) is provided with a synchronizer ring (42), the outer wall of the input shaft (48) on one side of the synchronizer hub (41) is provided with a first input shaft gear (39) engaged with a third gear (20) mounted on the outer wall of the output shaft (22).

7. The hydraulic oil circuit of a hybrid transmission according to claim 6, wherein: The outer wall of the input shaft (48) on one side of the first input shaft gear (39) is provided with a fourth gear (38), the inner wall of the clutch housing (23) on one side of the fourth gear (38) is provided with a clutch outer hub (24), the inner wall of the clutch outer hub (24) is provided with a clutch piston (37), the inner wall of the fourth gear (38) is embedded with a first D-shaped ring (36).

8. The hydraulic oil circuit of a hybrid transmission according to claim 7, wherein: The inner wall of the first D-shaped ring (36) is mounted with the clutch outer hub (24), the inner wall of the clutch housing (23) is provided with a clutch inner hub (27), the inner wall of the clutch inner hub (27) on one side of the second deep groove ball bearing (29) is provided with an oil collecting disc (28), a group of steel sheets (25) is mounted between the clutch outer hub (24) and the clutch inner hub (27), a friction plate (26) is mounted between the steel sheet (25) and the clutch inner hub (27), the inner wall of the clutch outer hub (24) is provided with a clutch baffle (34), one side of the clutch baffle (34) is provided with a clutch spring (35) mounted with the clutch inner hub (27), and the end face between the input shaft (48) and the input flange (32) is provided with a first thrust bearing (33).

9. The hydraulic oil circuit of a hybrid transmission according to claim 8, wherein: The inner wall of the output shaft (22) on one side of the second gear (19) is provided with a positioning sleeve (16) mounted with the transmission housing (15).

10. The hydraulic oil circuit of a hybrid transmission according to claim 9, wherein: The outer wall of the output shaft (22) on the side of the second gear (19) is provided with a first conical bearing (17), and the outer wall of the first conical bearing (17) is mounted with the transmission housing (15).

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