Hydraulic torque converter oil way capable of compatibly controlling two-way oil way and three-way oil way

Abstract

The utility model discloses a hydraulic torque converter oil way for compatibly controlling a two-way oil way and a three-way oil way, and belongs to the technical field of hydraulic torque converters. Comprising a valve body and a hydraulic control valve element assembly arranged in the valve body, a valve element hole is formed in the valve body, the hydraulic control valve element assembly is movably limited in the valve element hole, a plurality of oil way openings are formed in the valve body, and a two-way hydraulic torque converter or a three-way hydraulic torque converter is connected into the corresponding oil way openings through oil ways. And the control on the two-way hydraulic torque converter or the three-way hydraulic torque converter is realized. According to the hydraulic torque converter, compatible control over two hydraulic torque converters is achieved through one oil way. When the model of the hydraulic torque converter of the whole vehicle is replaced according to the power requirement, the transmission body does not need to be replaced, only corresponding reserved channel connectors in the hydraulic control system need to be correspondingly communicated, and installation and control of the hydraulic torque converters of different models can be achieved. And meanwhile, the transmission body development cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic torque converters, and in particular relates to a hydraulic torque converter oil circuit which is compatible with controlling two-way and three-way oil circuits. Background Art

[0002] The powertrain of an automatic transmission car consists of an engine connected to a transmission. There is no clutch between the engine and the transmission. The connection between the two is achieved by a torque converter, that is, the torque converter transmits the engine speed and torque to the transmission. Therefore, the maximum torque and speed that the torque converter can withstand affects the speed and torque that the powertrain system can output. At present, according to the number of control channels of the torque converter, it is mainly divided into two types: two-way (or two-channel) torque converter and three-way (or three-channel) torque converter. The torque converter of the commonly used automatic torque converter is two-way, and its manufacturing and assembly costs are lower than those of the three-way, and the control logic is relatively simple. The three-way torque converter adds a single locking channel compared to the two-way, which increases the locking torque capacity of the torque converter and improves the control accuracy. Conventional powertrains are adapted to torque converters in a one-to-one relationship. One end of the torque converter is connected to the transmission spline through a spline, and the oil circuit connection and control are achieved through the hole-shaft match. The other end is connected to the engine flywheel through a welded nut or a connecting plate bolt to achieve the connection and power transmission from the engine to the transmission. Therefore, the adaptation connection methods between different engines and transmissions are as follows: 1. By changing the installation position of the torque converter welding nut or the nut on the connecting plate, and machining the spline shape, the installation connection of the torque converter to the engine transmission can be achieved; 2. However, if the control of the torque converter with different number of channels needs to be matched, the internal structure of the transmission and the hydraulic system control oil circuit need to be changed to match. The former can be achieved without changing the body, only changing the connection position, while the latter requires the development of a new transmission body to achieve it. That is, the same torque converter cannot meet the adaptation requirements of different models of engines and transmissions at the same time, and cannot achieve perfect adaptation of the torque converter under different vehicle requirements. Therefore, it is urgent to design a transmission hydraulic system control oil circuit that is compatible with the control of torque converters with different numbers of channels in order to solve the adaptation problem and reduce the transmission development cost. Utility Model Content

[0003] In order to solve the problem that conventional powertrains are adapted to hydraulic torque converters in a one-to-one correspondence, that is, the same hydraulic torque converter cannot simultaneously meet the adaptation requirements of engines and transmissions of different models, the utility model further provides a hydraulic torque converter oil circuit that is compatible with controlling two-way and three-way oil circuits.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A hydraulic torque converter oil circuit compatible with controlling two-way and three-way oil circuits comprises a valve body and a hydraulic control valve core assembly arranged in the valve body, wherein a valve core hole is arranged in the valve body, and the hydraulic control valve core assembly is movable and limited in the valve core hole, and a plurality of oil circuit ports are arranged on the valve body, and a two-way hydraulic torque converter or a three-way hydraulic torque converter is respectively connected to the corresponding oil circuit ports through the oil circuit to realize control of the two-way hydraulic torque converter or the three-way hydraulic torque converter.

[0006] Furthermore, the multiple oil passages on the valve body are respectively a forced non-locking oil passage, a direct-connection side oil supply oil passage, a main oil passage, a cooling lubricating oil passage, an oil drain oil passage, a control valve oil passage, a switch valve oil passage, a direct-connection side oil passage, oil passage one, oil passage two and oil passage three.

[0007] Furthermore, the hydraulic control valve core assembly includes a stop plug, a clamping plate, a spring and a control valve core. The clamping plate can be radially slidably inserted into the valve body. The clamping plate fixes the stop plug at the rear end of the valve body by clamping. A spring is fixed at the front end of the stop plug. The front end of the spring presses against the control valve core. The control valve core is slidably set on the valve body.

[0008] Furthermore, the forced non-locking oil circuit port is connected to the forced non-locking oil circuit, the direct-connection side oil supply oil circuit port is connected to the direct-connection side oil supply oil circuit, the main oil circuit port is connected to the main oil circuit, the cooling and lubrication circuit port is connected to the cooling and lubrication oil circuit, the oil leakage oil circuit port is connected to the oil leakage oil circuit, the control valve oil circuit port is connected to the control valve oil circuit, the switch valve oil circuit port is connected to the switch valve oil circuit, the direct-connection side oil circuit port is connected to the direct-connection side oil circuit, the switch valve oil circuit is provided with a switch valve, and the control valve oil circuit is provided with a control valve.

[0009] Furthermore, when the valve body is connected to the two-way torque converter, the direct-connection side oil circuit is connected to the direct-connection side of the two-way torque converter, the oil circuit port 2 and the oil circuit port 3 are both connected to one end of the non-direct-connection side oil circuit, the other end of the non-direct-connection side oil circuit is connected to the non-direct-connection side of the two-way torque converter, the non-locking oil circuit is connected to the oil circuit port 1 and is in a closed state, a pressure-limiting one-way valve 1 is provided on the external branch of the direct-connection side oil circuit, and a pressure-limiting one-way valve 1 is provided on the external branch of the non-direct-connection side oil circuit. A pressure-limiting one-way valve is provided. When the valve body is connected to the three-way torque converter, the direct-connection side oil circuit is connected to the direct-connection side of the three-way torque converter, oil circuit port 3 and oil circuit port 1 are both connected to one end of the non-direct-connection side oil circuit, the other end of the non-direct-connection side oil circuit is connected to the non-direct-connection side of the three-way torque converter, one end of the locking oil circuit is connected to oil circuit port 2, and the other end is connected to the locking side of the three-way torque converter, and a pressure-limiting one-way valve is provided on the external branch road of the direct-connection side oil circuit.

[0010] Furthermore, when the two-way torque converter is in a locked state, the non-locking oil circuit is forced to be emptied of oil, and the switch valve oil circuit is filled with oil. The transmission oil in the switch valve oil circuit pushes the control valve core to overcome the spring force of the spring and move to the rear end of the valve body in the valve core hole. The main oil circuit is filled with oil, and the transmission oil flows to the cooling and lubricating oil circuit through the control valve core via the main oil circuit. The control valve oil circuit is filled with oil, and the transmission oil flows to the non-direct-connected side oil circuit via the control valve core via the control valve oil circuit. The oil circuit port 2 and the oil circuit port 3 connected to the non-direct-connected side oil circuit are opened, and a part of the transmission oil in the non-direct-connected side oil circuit flows through the non-direct-connected side of the two-way torque converter to control the locking of the two-way torque converter, and another part of the transmission oil flows to the oil drain circuit through the control valve core, and the remaining direct-connected side oil supply circuit, direct-connected side oil circuit and locking oil circuit are emptied of oil.

[0011] Furthermore, when the two-way torque converter is in an unlocked state, the non-locking oil circuit and the switch valve oil circuit are forced to be empty of oil, and the control valve core moves to the front end of the valve body in the valve core hole under the action of the spring force of the spring, the main oil circuit is filled with oil, and the transmission oil flows to the direct-connection side oil circuit through the control valve core via the main oil circuit, and the transmission oil in the direct-connection side oil circuit flows to the non-direct-connection side oil circuit via the direct-connection side of the two-way torque converter via the non-direct-connection side, which is used to control the non-locking of the two-way torque converter, the oil circuit port 2 connected to the non-direct-connection side oil circuit is closed, and the oil circuit port 3 is opened, and the transmission oil flows to the cooling and lubricating oil circuit via the non-direct-connection side oil circuit through the control valve core, and the remaining direct-connection side oil supply circuit, oil drain circuit, control valve oil circuit and locking oil circuit are empty of oil.

[0012] Furthermore, when the two-way torque converter is in an unlocked state, the unlocking oil circuit is forced to be filled with oil, and the control valve core moves to the front end of the valve body in the valve core hole under the action of the spring force of the spring, so as to put the two-way torque converter in a forced unlocked state.

[0013] Furthermore, when the three-way torque converter is in a locked state, the position of the control valve core is consistent with that of the two-way torque converter in a locked state, the main oil circuit is filled with oil, and the transmission oil flows from the main oil circuit through the control valve core to the cooling and lubricating oil circuit, the direct-connection side oil supply circuit is filled with oil, and the transmission oil flows from the direct-connection side oil supply circuit through the control valve core to the direct-connection side oil circuit, and the transmission oil in the direct-connection side oil circuit flows from the direct-connection side of the three-way torque converter through the non-direct-connection side to the non-direct-connection side oil circuit, the oil circuit port 2 and the oil circuit port 3 connected to the non-direct-connection side oil circuit are opened, and the transmission oil in the non-direct-connection side oil circuit flows to the oil drain circuit through the control valve core, the control valve oil circuit is filled with oil, and the transmission oil flows from the control valve oil circuit through the control valve core to the locking oil circuit, which is used to control the locking of the three-way torque converter.

[0014] Furthermore, when the three-way torque converter is in an unlocked state, the position of the control valve core is consistent with that of the two-way torque converter in an unlocked state, forcing the non-locking oil circuit and the switch valve oil circuit to be empty, the main oil circuit to be filled with oil, the transmission oil flows from the main oil circuit through the control valve core to the direct-connection side oil circuit, the transmission oil in the direct-connection side oil circuit flows from the direct-connection side of the three-way torque converter to the non-direct-connection side oil circuit via the non-direct-connection side, for controlling the non-locking of the three-way torque converter, the oil circuit port 2 connected to the non-direct-connection side oil circuit is closed, the oil circuit port 3 is opened, the transmission oil flows from the non-direct-connection side oil circuit through the control valve core to the cooling and lubrication oil circuit, the transmission oil flows from the non-direct-connection side oil circuit branch through the control valve core to the locking oil circuit, and the remaining direct-connection side oil supply circuit, oil drain circuit, and control valve oil circuit are empty.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model realizes compatible control of two types of torque converters through an oil circuit. When the torque converter model of the vehicle is changed due to power demand, the transmission body does not need to be replaced. It only needs to connect the corresponding reserved channel interface in the hydraulic control system to achieve the installation and control of different types of torque converters. At the same time, the development cost of the transmission body is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the control valve core;

[0019] Figure 3 It is a schematic diagram of the structure of the valve body;

[0020] Figure 4 It is the oil circuit layout diagram of the utility model in the two-way locking state;

[0021] Figure 5 This is the oil circuit layout diagram of the utility model in the two-way non-locking state;

[0022] Figure 6 This is the oil circuit layout diagram of the utility model in the three-way locking state;

[0023] Figure 7 This is the oil circuit layout diagram of the utility model in the three-way non-locking state.

[0024] The names and reference numerals of the components involved in the above drawings are as follows:

[0025] 1. Forced non-locking oil circuit; 2. Direct-connection side oil supply circuit; 3. Main oil circuit; 4. Cooling lubricating oil circuit; 5. Drain oil circuit; 6. Control valve oil circuit; 7. Switch valve oil circuit; 8. Direct-connection side oil circuit; 9. Non-direct-connection side oil circuit; 10. Locking oil circuit; 11. Forced non-locking oil circuit interface; 12. Direct-connection side oil supply circuit interface; 13. Main oil circuit interface; 14; Cooling lubricating oil circuit interface; 15. Drain oil circuit interface; 16. Control valve oil circuit interface; 17. Switch valve oil circuit interface; 18. Direct-connection side oil circuit interface; 19. Oil interface 1; 20. Oil interface 2; 21. Oil Intersection three; 22. On-off valve; 23. Control valve; 24. Valve body; 25. Hydraulic control valve core assembly; 26. Valve body valve core hole; 27. Stop plug; 28. Card plate; 29. ​​Spring; 30. Control valve core; 31. Core head; 32. Core tail; 33. Block one; 34. Block two; 35. Block three; 36. Connecting shaft; 37. Pressure-limiting check valve one; 38. Pressure-limiting check valve two; 39. Pressure-limiting check valve three; 40. Two-way hydraulic torque converter; 41. Three-way hydraulic torque converter; 42. Direct-connection side; 43. Non-direct-connection side; 44. Locking side. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] The present embodiment discloses a torque converter oil circuit that is compatible with controlling two-way and three-way oil circuits, including a valve body 24 and a hydraulic control valve core assembly 25 disposed in the valve body 24, wherein a valve core hole 26 is disposed in the valve body 24, wherein the hydraulic control valve core assembly 25 is movable and limited in the valve core hole 26, and the valve body 24 has multiple oil circuit ports, and a two-way torque converter or a three-way torque converter is respectively connected to the corresponding oil circuit ports through the oil circuit to realize control of the two-way torque converter or the three-way torque converter.

[0028] Furthermore, the multiple oil passages on the valve body 24 are respectively a forced non-locking oil passage 11, a direct-connection side oil supply oil passage 12, a main oil passage 13, a cooling lubricating oil passage 14, an oil drain oil passage 15, a control valve oil passage 16, a switch valve oil passage 17, a direct-connection side oil passage 18, oil passage one 19, oil passage two 20 and oil passage three 21.

[0029] Furthermore, the hydraulic control valve core assembly 25 includes a stop plug 27, a clamping plate 28, a spring 29 and a control valve core 30. The clamping plate 28 can be radially slid into the valve body 24. The clamping plate 28 fixes the stop plug 27 to the rear end of the valve body 24 by clamping. A spring 29 is fixed to the front end of the stop plug 27. The front end of the spring 29 presses on the control valve core 30. The control valve core 30 is slidably set on the valve body 24.

[0030] The control valve core 30 includes a core head 31, a core tail 32, a block 1 33, a block 2 34 and a block 35. The core head 31 and the core tail 32 are connected to the block 1 33, the block 2 34 and the block 3 35 in sequence via a connecting shaft 36. The rear end of the core tail 32 is conical, and the core tail 32 is in elastic contact with the spring 29.

[0031] Furthermore, the forced non-locking oil circuit port 11 is connected to the forced non-locking oil circuit 1, the direct-connection side oil supply oil circuit port 12 is connected to the direct-connection side oil supply oil circuit 2, the main oil circuit port 13 is connected to the main oil circuit 3, the cooling and lubrication circuit port 14 is connected to the cooling and lubrication oil circuit 4, the drain oil circuit port 15 is connected to the drain oil circuit 5, the control valve oil circuit port 16 is connected to the control valve oil circuit 6, the switch valve oil circuit port 17 is connected to the switch valve oil circuit 7, the direct-connection side oil circuit port 18 is connected to the direct-connection side oil circuit 8, the switch valve oil circuit 7 is provided with a switch valve 22, and the control valve oil circuit 6 is provided with a control valve 23.

[0032] Furthermore, when the valve body 24 is connected to the two-way torque converter 40, the direct-connection side oil circuit 8 is connected to the direct-connection side 42 of the two-way torque converter 40, the oil circuit port 20 and the oil circuit port 3 21 are both connected to one end of the non-direct-connection side oil circuit 9, the other end of the non-direct-connection side oil circuit 9 is connected to the non-direct-connection side 43 of the two-way torque converter 40, the non-locking oil circuit 10 is connected to the oil circuit port 19 and is in a closed state, a pressure-limiting check valve 1 37 is provided on the external branch of the direct-connection side oil circuit 8, and a pressure-limiting check valve 1 is provided on the external branch of the non-direct-connection side oil circuit 9. Pressure check valve 2 38, when the valve body 24 is connected with the three-way torque converter 41, the direct-connection side oil circuit 8 is connected with the direct-connection side 42 of the three-way torque converter 41, the oil circuit port 3 21 and the oil circuit port 1 19 are both connected with one end of the non-direct-connection side oil circuit 9, the other end of the non-direct-connection side oil circuit 9 is connected with the non-direct-connection side 43 of the three-way torque converter 41, one end of the locking oil circuit 10 is connected with the oil circuit port 2 20, and the other end is connected with the locking side 44 of the three-way torque converter 41, and a pressure limiting check valve 3 39 is provided on the external branch road of the direct-connection side oil circuit 8.

[0033] Furthermore, when the two-way torque converter 40 is in a locked state, the forced non-locking oil circuit 1 is emptied of oil, and the switch valve oil circuit 7 is filled with oil. The transmission oil in the switch valve oil circuit 7 pushes the control valve core 30 to overcome the spring force of the spring 29 and move to the rear end of the valve body 24 in the valve core hole 26. The control valve core 30 moves to open the main oil circuit 3, the cooling and lubricating oil circuit 4, the oil leakage oil circuit 5, the control valve oil circuit 6, the switch valve oil circuit 7 and the non-direct-connection side oil circuit 9, and closes the forced non-locking oil circuit 1, the direct-connection side oil supply circuit 2, the direct-connection side oil circuit 8 and the locking oil circuit 10. The core tail 32 of the control valve core 30 blocks the forced non-locking oil circuit 1, and the block three 35 blocks the direct-connection side oil supply. The oil circuit 2 and the direct-connected side oil circuit 8, the main oil circuit 3 is filled with oil, the transmission oil flows from the main oil circuit 3 through the control valve core 30 to the cooling and lubricating oil circuit 4, the control valve oil circuit 6 is filled with oil, the transmission oil flows from the control valve oil circuit 6 through the control valve core 30 to the non-direct-connected side oil circuit 9, the oil circuit port 2 20 and the oil circuit port 3 21 connected to the non-direct-connected side oil circuit 9 are opened, a part of the transmission oil in the non-direct-connected side oil circuit 9 flows through the non-direct-connected side 43 of the two-way torque converter 40, which is used to control the locking of the two-way torque converter 40, and the other part of the transmission oil flows to the oil drain circuit 5 through the control valve core 30, and the remaining direct-connected side oil supply circuit 2, the direct-connected side oil circuit 8 and the locking oil circuit 10 are empty.

[0034] Furthermore, when the two-way torque converter 40 is in the unlocked state, the forced unlocking oil circuit 1 and the switch valve oil circuit 7 are empty of oil, and the control valve core 30 moves to the front end of the valve body 24 in the valve core hole 26 under the spring force of the spring 29. The control valve core 30 moves to open the forced unlocking oil circuit 1, the main oil circuit 3, the cooling and lubricating oil circuit 4, the direct-junction side oil circuit 8 and the non-direct-junction side oil circuit 9, and closes the direct-junction side oil supply circuit 2, the oil leakage circuit 5, the control valve oil circuit 6, the switch valve oil circuit 7 and the locking oil circuit 10. The core tail 32 of the control valve core 30 blocks the direct-junction side oil supply circuit 2, and the block 1 33 and the block 2 34 block the The oil drain circuit 5 and the control valve oil circuit 6, the main oil circuit 3 is filled with oil, the transmission oil flows from the main oil circuit 3 to the direct-connection side oil circuit 8 through the control valve core 30, the transmission oil in the direct-connection side oil circuit 8 flows through the direct-connection side 42 of the two-way torque converter 40 through the non-direct-connection side 43 to the non-direct-connection side oil circuit 9, which is used to control the non-locking of the two-way torque converter 40, the oil circuit port 2 20 connected to the non-direct-connection side oil circuit 9 is closed, the oil circuit port 3 21 is opened, the transmission oil flows from the non-direct-connection side oil circuit 9 to the cooling and lubricating oil circuit 4 through the control valve core 30, and the remaining direct-connection side oil supply circuit 2, the oil drain circuit 5, the control valve oil circuit 6 and the locking oil circuit 10 are empty.

[0035] Furthermore, when the two-way torque converter 40 is in an unlocked state, the forced unlocking oil circuit 1 is filled with oil, and the control valve core 30 moves to the front end of the valve body 24 in the valve core hole 26 under the spring force of the spring 29, so as to put the two-way torque converter 40 in a forced unlocked state.

[0036] Furthermore, when the three-way torque converter 41 is in a locked state, the position of the control valve core 30 is consistent with that of the two-way torque converter 40 in a locked state, and the control valve core 30 moves to open the direct-connection side oil supply circuit 2, the main oil circuit 3, the cooling and lubricating oil circuit 4, the oil leakage circuit 5, the control valve circuit 6, the switch valve circuit 7, the direct-connection side oil circuit 8, the non-direct-connection side oil circuit 9 and the locking oil circuit 10, and closes the forced non-locking oil circuit 1, and the main oil circuit 3 is filled with oil. The transmission oil flows from the main oil circuit 3 through the control valve core 30 to the cooling and lubricating oil circuit 4, and the direct-connection side oil supply circuit 2 is filled with oil. The transmission oil flows to the direct-connection side oil circuit 8 through the direct-connection side oil supply circuit 2 through the control valve core 30, and the transmission oil in the direct-connection side oil circuit 8 flows to the non-direct-connection side oil circuit 9 through the direct-connection side 42 of the three-way torque converter 41 through the non-direct-connection side 43. The oil circuit port 20 and the oil circuit port 31 connected to the non-direct-connection side oil circuit 9 are opened, and the transmission oil in the non-direct-connection side oil circuit 9 flows to the oil drain circuit 5 through the control valve core 30, and the control valve oil circuit 6 is filled with oil. The transmission oil flows to the locking oil circuit 10 through the control valve core 30 through the control valve oil circuit 6, so as to control the locking of the three-way torque converter 41.

[0037] Further, when the three-way torque converter 41 is in the unlocked state, the position of the control valve core 30 is consistent with that of the two-way torque converter 40 in the unlocked state, and the control valve core 30 moves to open the main oil circuit 3, the cooling and lubricating oil circuit 4, the oil leakage circuit 5, the direct-connection side oil circuit 8, the non-direct-connection side oil circuit 9 and the locking oil circuit 10, and closes the forced non-locking oil circuit 1, the direct-connection side oil supply circuit 2, the oil leakage circuit 5, the control valve oil circuit 6 and the switch valve oil circuit 7. The core tail 32 of the control valve core 30 blocks the direct-connection side oil supply circuit 2, the block 1 33 and the block 2 34 block the oil leakage circuit 5 and the control valve oil circuit 6, and the forced non-locking oil circuit 1 and the switch valve oil circuit 7 are empty. The main oil circuit 3 is filled with oil, and the transmission oil flows from the main oil circuit 3 to the direct-connected side oil circuit 8 through the control valve core 30, and the transmission oil in the direct-connected side oil circuit 8 flows from the direct-connected side 42 of the three-way torque converter 41 to the non-direct-connected side 43 to the non-direct-connected side oil circuit 9, which is used to control the non-locking of the three-way torque converter 41, and the oil circuit port 2 20 connected to the non-direct-connected side oil circuit 9 is closed, and the oil circuit port 3 21 is opened, and the transmission oil flows from the non-direct-connected side oil circuit 9 to the cooling and lubricating oil circuit 4 through the control valve core 30, and the transmission oil flows from the branch of the non-direct-connected side oil circuit 9 to the locking oil circuit 10 through the control valve core 30, and the remaining direct-connected side oil supply circuit 2, oil drain circuit 5, and control valve oil circuit 6 are empty.

[0038] The hydraulic control valve core assembly 25 of the utility model includes a moving part: a control valve core 30; a valve core control part: a spring 29, a control valve 23 and a switch valve 22; an oil pressure limiting control part: a pressure limiting check valve 1 37, a pressure limiting check valve 2 38 and a pressure limiting check valve 3 39; a fixing part: a valve body valve core hole 26, a stopper 27 and a clamping plate 28. The actuator is a hydraulic torque converter.

[0039] Among them, the fixed part valve body valve core hole 26, the stop plug 27, and the clamping plate 28 are used to limit the working position of the moving part control valve core 30 and provide an oil circuit; the valve core control part combination controls the position of the control valve core 30 in the valve body valve core hole 26, thereby controlling the direction and pressure of the hydraulic oil flowing to the actuator torque converter; the oil pressure limiting control parts pressure limiting check valve 1 37, pressure limiting check valve 2 38 and pressure limiting check valve 3 39 are used to limit the maximum oil pressure at both ends of the torque converter to avoid the hydraulic oil pressure flowing to the torque converter exceeding its limit and causing damage to it.

[0040] Working mode of the utility model:

[0041] 1. Two-way torque converter control

[0042] 1.1 Locking:

[0043] In the locking condition, the control valve core 30 is at the left side of the valve core hole 26 of the valve body: when the forced non-locking oil circuit 1 is empty and the switch valve oil circuit 7 is filled with oil, the transmission oil in the switch valve oil circuit 7 pushes the control valve core 30 to overcome the spring force of the spring 29 and move to the left.

[0044] a. Cooling and lubricating oil circuit: The transmission oil flows from the main oil circuit 3 through the control valve core 30 to the cooling and lubricating oil circuit 4.

[0045] b. Two-way torque converter control oil circuit: The transmission oil flows from the control valve oil circuit 6 to the non-direct connection side oil circuit 9 through the control valve core 30; a part of the transmission oil in the non-direct connection side oil circuit 9 acts on the direct connection side of the two-way torque converter to control the two-way torque converter to enter a locking state, and the other part (a small amount of transmission oil) flows to the oil drain circuit 5 through the control valve core 30.

[0046] c. Other oil circuits: empty oil state.

[0047] 1.2 Non-locking:

[0048] In the non-locking working condition, the control valve core 30 is at the right side of the valve core hole, which includes two control states:

[0049] State 1: When the forced non-locking oil circuit 1 and the switch valve oil circuit 7 are empty, the control valve core 30 moves to the right side under the spring force of the spring 29.

[0050] State 2: When the non-locking oil circuit 1 is forced to be filled with oil, regardless of whether the switch valve oil circuit 7 is filled with oil, the control valve core 30 moves to the right side under the action of the left transmission oil and the spring force of the spring 29. (State 2 is used to force the two-way torque converter to be in a non-locking state).

[0051] a. Two-way torque converter control oil circuit + cooling and lubricating oil circuit: The transmission oil flows from the main oil circuit 3 through the control valve core 30 to the direct-connected side oil circuit 8, and from the direct-connected side oil circuit 8 to the non-direct-connected side oil circuit 9 through the two-way torque converter (controls the two-way torque converter to be non-locked), and from the non-direct-connected side oil circuit 9 to the cooling and lubricating oil circuit 4 through the control valve core.

[0052] b. Other oil circuits: empty oil state.

[0053] 2. Three-way torque converter control

[0054] 2.1 Locking:

[0055] In the locking condition, the positions of the control valve core 30 and the valve core hole 26 are controlled and the two-way torque converter control oil circuit is controlled.

[0056] a. Cooling and lubrication oil circuit:

[0057] ① Cooling and lubricating oil circuit: The transmission oil flows from the main oil circuit 3 through the control valve core 30 to the cooling and lubricating oil circuit 4.

[0058] ② Three-way torque converter cooling and lubricating oil circuit: The transmission oil flows from the direct-connection side oil supply circuit 2 through the control valve core 30 to the direct-connection side oil circuit 8, and from the direct-connection side oil circuit 8 to the non-direct-connection side through the three-way torque converter direct-connection side, and from the non-direct-connection side oil circuit 9 through the control valve core to the oil drain circuit 5.

[0059] b. Three-way torque converter control oil circuit: The transmission oil flows from the control valve oil circuit 6 through the control valve core 30 to the locking oil circuit 10.

[0060] c. Other oil circuits: empty oil state.

[0061] 2.2 Non-locking:

[0062] In the non-locking condition, the positions of the control valve core 30 and the valve core hole 26 are controlled and the two-way torque converter control oil circuit is controlled.

[0063] a. Three-way torque converter control oil circuit + three-way torque converter cooling and lubrication oil circuit: the transmission oil flows from the main oil circuit 3 through the control valve core 30 to the direct-connection side oil circuit 8, and from the direct-connection side oil circuit 8 to the non-direct-connection side oil circuit 9 through the three-way torque converter (control the three-way torque converter to be non-locked), and from the non-direct-connection side oil circuit 9 to the cooling and lubrication 4 and the locking oil circuit 10 through the control valve core 30.

[0064] b. Other oil circuits: empty oil state.

[0065] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent conditions of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0066] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A torque converter oil circuit compatible with controlling two-way and three-way oil circuits, characterized in that: The invention comprises a valve body (24) and a hydraulic control valve core assembly (25) arranged in the valve body (24); a valve core hole (26) is arranged in the valve body (24); the hydraulic control valve core assembly (25) is movable and limited in the valve core hole (26); a plurality of oil passages are arranged on the valve body (24); a two-way hydraulic torque converter or a three-way hydraulic torque converter is respectively connected to the corresponding oil passages through the oil passages, so as to realize control of the two-way hydraulic torque converter or the three-way hydraulic torque converter.

2. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 1, characterized in that: The multiple oil passages on the valve body (24) are respectively a forced non-locking oil passage (11), a direct-connection side oil supply oil passage (12), a main oil passage (13), a cooling lubricating oil passage (14), an oil drain oil passage (15), a control valve oil passage (16), a switch valve oil passage (17), a direct-connection side oil passage (18), an oil passage one (19), an oil passage two (20) and an oil passage three (21).

3. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 2, characterized in that: The hydraulic control valve core assembly (25) comprises a stopper plug (27), a clamping plate (28), a spring (29) and a control valve core (30); the clamping plate (28) can be radially slidably inserted into the valve body (24); the clamping plate (28) fixes the stopper plug (27) to the rear end of the valve body (24) by clamping; a spring (29) is fixed to the front end of the stopper plug (27); the front end of the spring (29) presses against the control valve core (30); and the control valve core (30) is slidably arranged on the valve body (24).

4. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 3, characterized in that: The forced non-locking oil passage port (11) is connected to the forced non-locking oil passage (1), the direct-connection side oil supply passage port (12) is connected to the direct-connection side oil supply passage (2), the main oil passage port (13) is connected to the main oil passage (3), the cooling and lubricating passage port (14) is connected to the cooling and lubricating oil passage (4), the drain oil passage port (15) is connected to the drain oil passage (5), the control valve oil passage port (16) is connected to the control valve oil passage (6), the switch valve oil passage port (17) is connected to the switch valve oil passage (7), the direct-connection side oil passage port (18) is connected to the direct-connection side oil passage (8), a switch valve (22) is provided on the switch valve oil passage (7), and a control valve (23) is provided on the control valve oil passage (6).

5. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 4, characterized in that: When the valve body (24) is connected to the two-way hydraulic torque converter (40), the direct-connection side oil circuit (8) is connected to the direct-connection side (42) of the two-way hydraulic torque converter (40), the oil circuit port 2 (20) and the oil circuit port 3 (21) are both connected to one end of the non-direct-connection side oil circuit (9), the other end of the non-direct-connection side oil circuit (9) is connected to the non-direct-connection side (43) of the two-way hydraulic torque converter (40), the non-locking oil circuit (10) is connected to the oil circuit port 1 (19) and is in a closed state, and a pressure-limiting check valve 1 (37) is provided on the external branch of the direct-connection side oil circuit (8), and a pressure-limiting check valve 2 (37) is provided on the external branch of the non-direct-connection side oil circuit (9). Second (38), when the valve body (24) is connected to the three-way hydraulic torque converter (41), the direct-connection side oil circuit (8) is connected to the direct-connection side (42) of the three-way hydraulic torque converter (41), the oil circuit port three (21) and the oil circuit port one (19) are both connected to one end of the non-direct-connection side oil circuit (9), the other end of the non-direct-connection side oil circuit (9) is connected to the non-direct-connection side (43) of the three-way hydraulic torque converter (41), one end of the locking oil circuit (10) is connected to the oil circuit port two (20), and the other end is connected to the locking side (44) of the three-way hydraulic torque converter (41), and a pressure-limiting one-way valve three (39) is provided on the external branch of the direct-connection side oil circuit (8).

6. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 5, characterized in that: When the two-way torque converter (40) is in a locked state, the non-locking oil circuit (1) is forced to be empty of oil, the switch valve oil circuit (7) is filled with oil, the transmission oil in the switch valve oil circuit (7) pushes the control valve core (30) to overcome the spring force of the spring (29) and move to the rear end of the valve body (24) in the valve core hole (26), the main oil circuit (3) is filled with oil, the transmission oil flows through the main oil circuit (3) through the control valve core (30) to the cooling and lubricating oil circuit (4), the control valve oil circuit (6) is filled with oil, and the transmission oil flows through the control valve oil circuit (6) through the control valve oil circuit (6). The valve core (30) flows to the non-direct connection side oil circuit (9), the oil circuit port 2 (20) and the oil circuit port 3 (21) connected to the non-direct connection side oil circuit (9) are opened, a part of the transmission oil in the non-direct connection side oil circuit (9) flows through the non-direct connection side (43) of the two-way hydraulic torque converter (40) to control the locking of the two-way hydraulic torque converter (40), another part of the transmission oil flows to the oil drain circuit (5) through the control valve core (30), and the remaining direct connection side oil supply circuit (2), the direct connection side oil circuit (8) and the locking oil circuit (10) are empty.

7. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 5, characterized in that: When the two-way hydraulic torque converter (40) is in the unlocked state, the unlocked oil circuit (1) and the switch valve oil circuit (7) are forced to be empty of oil, the control valve core (30) moves to the front end of the valve body (24) in the valve core hole (26) under the spring force of the spring (29), the main oil circuit (3) is filled with oil, and the transmission oil flows through the main oil circuit (3) through the control valve core (30) to the direct-connection side oil circuit (8), and the transmission oil in the direct-connection side oil circuit (8) flows through the direct-connection side of the two-way hydraulic torque converter (40). (42) flows to the non-direct connection side oil circuit (9) through the non-direct connection side (43) to control the non-locking of the two-way torque converter (40). The oil circuit port 2 (20) connected to the non-direct connection side oil circuit (9) is closed, and the oil circuit port 3 (21) is opened. The transmission oil flows to the cooling and lubricating oil circuit (4) through the non-direct connection side oil circuit (9) through the control valve core (30), and the remaining direct connection side oil supply circuit (2), oil drain circuit (5), control valve oil circuit (6) and locking oil circuit (10) are empty.

8. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 5, characterized in that: When the two-way hydraulic torque converter (40) is in a non-locking state, the non-locking oil circuit (1) is forced to be filled with oil, and the control valve core (30) moves to the front end of the valve body (24) in the valve core hole (26) under the action of the spring force of the spring (29), so as to put the two-way hydraulic torque converter (40) in a forced non-locking state.

9. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 5, characterized in that: When the three-way hydraulic torque converter (41) is in a locked state, the position of the control valve core (30) is consistent with that of the two-way hydraulic torque converter (40) in a locked state, the main oil circuit (3) is filled with oil, the transmission oil flows from the main oil circuit (3) through the control valve core (30) to the cooling and lubricating oil circuit (4), the direct-connection side oil supply circuit (2) is filled with oil, the transmission oil flows from the direct-connection side oil supply circuit (2) through the control valve core (30) to the direct-connection side oil circuit (8), and the transmission oil in the direct-connection side oil circuit (8) flows through the three-way hydraulic torque converter. The direct connection side (42) of (41) flows to the non-direct connection side oil circuit (9) via the non-direct connection side (43), the oil circuit port 2 (20) and the oil circuit port 3 (21) connected to the non-direct connection side oil circuit (9) are opened, the transmission oil in the non-direct connection side oil circuit (9) flows to the oil drain circuit (5) via the control valve core (30), the control valve oil circuit (6) is filled with oil, and the transmission oil flows to the locking oil circuit (10) via the control valve core (30) via the control valve oil circuit (6), so as to control the locking of the three-way hydraulic torque converter (41).

10. The torque converter oil circuit compatible with controlling two-way and three-way oil circuits according to claim 5, characterized in that: When the three-way hydraulic torque converter (41) is in an unlocked state, the position of the control valve core (30) is consistent with that of the two-way hydraulic torque converter (40) in an unlocked state, and the non-locking oil circuit (1) and the switch valve oil circuit (7) are forced to be empty, and the main oil circuit (3) is filled with oil. The transmission oil flows through the main oil circuit (3) through the control valve core (30) to the direct-connection side oil circuit (8), and the transmission oil in the direct-connection side oil circuit (8) flows through the direct-connection side (42) of the three-way hydraulic torque converter (41) through the non-direct-connection side (43) to the non-direct-connection side The oil circuit (9) is used to control the three-way torque converter (41) to be non-locked. The oil circuit port 2 (20) connected to the non-direct connection side oil circuit (9) is closed, and the oil circuit port 3 (21) is opened. The transmission oil flows to the cooling lubricating oil circuit (4) through the non-direct connection side oil circuit (9) through the control valve core (30). The transmission oil flows to the locking oil circuit (10) through the branch of the non-direct connection side oil circuit (9) through the control valve core (30). The remaining direct connection side oil supply oil circuit (2), oil drain oil circuit (5), and control valve oil circuit (6) are empty.

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