CN116753283B - Hydraulic control oil circuit of hydraulic torque converter - Google Patents
Hydraulic control oil circuit of hydraulic torque converter Download PDFInfo
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- CN116753283B CN116753283B CN202311014962.8A CN202311014962A CN116753283B CN 116753283 B CN116753283 B CN 116753283B CN 202311014962 A CN202311014962 A CN 202311014962A CN 116753283 B CN116753283 B CN 116753283B
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- 239000003921 oil Substances 0.000 claims description 314
- 238000001816 cooling Methods 0.000 claims description 45
- 238000005461 lubrication Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 10
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Abstract
The invention discloses a hydraulic control oil way of a hydraulic torque converter, which comprises a one-way valve, an unlocking pressure control valve and a pilot type electromagnetic valve, wherein an unlocking control oil way is arranged between the unlocking pressure control valve and the hydraulic torque converter, the pilot type electromagnetic valve is communicated with the unlocking pressure control valve through the pilot type control oil way, the unlocking pressure control valve is communicated with a first oil inlet oil way, and the unlocking pressure control valve is communicated with the one-way valve through an oil drain oil way. The hydraulic control oil way of the hydraulic torque converter can stably control the unlocking pressure of the hydraulic torque converter, and is not influenced by the output flow of a mechanical oil pump; the locking pressure of the hydraulic torque converter can be stably controlled, and the sliding grinding and locking control of the hydraulic torque converter can be realized.
Description
Technical Field
The invention belongs to the technical field of gearboxes, and particularly relates to a hydraulic control oil way of a hydraulic torque converter.
Background
In the existing hydraulic torque converter control oil way, when unlocking and locking modes of the hydraulic torque converter are switched, locking pressure is not controlled by a pilot electromagnetic valve, the change amplitude is large, the pilot electromagnetic valve only adjusts release pressure, the sliding process of the hydraulic torque converter is realized by controlling the difference value of the locking pressure and the release pressure, the pressure control precision is poor, and the driving comfort of a vehicle is poor.
The patent document with the publication number CN217713545U discloses a control oil circuit of a hydraulic torque converter, which comprises the hydraulic torque converter, a first adjusting valve cavity and a second adjusting valve cavity, wherein the first adjusting valve cavity and the second adjusting valve cavity are communicated with the hydraulic torque converter, when the hydraulic torque converter is locked, oil flows from the first adjusting valve cavity to the second adjusting valve cavity through the hydraulic torque converter, and finally flows from the second adjusting valve cavity to the hydraulic torque converter through the hydraulic torque converter, and finally flows to the first adjusting valve cavity when the hydraulic torque converter is unlocked. The technical solution disclosed in this patent document also fails to solve the above-described technical problems.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the hydraulic control oil way of the hydraulic torque converter is provided by the invention, and the purpose is to stably control the locking pressure and the releasing pressure of the hydraulic torque converter simultaneously through the pilot type electromagnetic valve, improve the pressure control precision of the hydraulic torque converter, realize the stable sliding control process of the hydraulic torque converter and improve the driving comfort of a vehicle.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the hydraulic torque converter hydraulic control oil way comprises a one-way valve, an unlocking pressure control valve and a pilot type electromagnetic valve, wherein an unlocking control oil way is arranged between the unlocking pressure control valve and the hydraulic torque converter, the pilot type electromagnetic valve is communicated with the unlocking pressure control valve through the pilot type control oil way, the unlocking pressure control valve is communicated with the first oil inlet oil way, and the unlocking pressure control valve is communicated with the one-way valve through the oil drain oil way.
The unlocking pressure control valve comprises a first valve body, a first valve core arranged in the first valve body and a first return spring applying elastic acting force to the first valve core, wherein the first valve core is a three-section valve core, the first valve core comprises a first left end core body, a first middle section core body and a first right end core body which are sequentially arranged along the axial direction, the diameter of the first left end core body is smaller than that of the first middle section core body and that of the first right end core body, the diameters of the first middle section core body and the first right end core body are the same, and after pressure oil passes through between the first left end core body and the first middle section core body, the pressure oil pushes the first valve core to move, and the first return spring is compressed.
The first valve body is provided with a first oil inlet connected with the first oil inlet oil way, and a first oil drain port and a second oil drain port connected with the oil drain oil way.
The hydraulic torque converter hydraulic control oil circuit also comprises a blocking pressure control valve communicated with the unlocking pressure control valve, a blocking control oil circuit is arranged between the blocking pressure control valve and the hydraulic torque converter, the pilot electromagnetic valve is communicated with the blocking pressure control valve through the pilot valve control oil circuit, and the blocking pressure control valve is respectively communicated with the first oil inlet oil circuit and the second oil inlet oil circuit.
The locking pressure control valve comprises a second valve body, a second valve core arranged in the second valve body and a second return spring applying elastic acting force to the second valve core, wherein the second valve core is a four-section valve core, the second valve core comprises a second left end core body, a second middle section core body, a third middle section core body and a second right end core body which are sequentially arranged along the axial direction, the diameter of the second left end core body is smaller than that of the second middle section core body, the diameter of the third middle section core body and the diameter of the second right end core body, the diameters of the second middle section core body, the diameter of the third middle section core body and the diameter of the second right end core body are the same, and the second return spring is clamped between the second left end core body and the second valve body.
The second valve body is provided with a second oil outlet connected with the first cooling lubricating oil way, a second oil inlet connected with the first oil inlet oil way, a locking pressure oil inlet and outlet connected with the locking control oil way, a second cooling oil outlet connected with the second cooling lubricating oil way and a third oil inlet connected with the second oil inlet oil way.
The unlocking pressure control valve and the locking pressure control valve are connected with the first cooling lubrication oil way, the unlocking pressure control valve is communicated with the locking pressure control valve through the second cooling lubrication oil way, and the locking pressure control valve is connected with the second oil inlet oil way.
A first throttling hole is arranged between the pilot valve control oil way and the locking pressure control valve, and a second throttling hole is arranged between the pilot valve control oil way and the unlocking pressure control valve.
The second valve body is provided with a locking pressure oil inlet and a locking pressure oil outlet which are connected with the locking control oil way, a second spring cavity which is used for accommodating the second return spring is arranged in the second valve body, the second spring cavity is connected with the locking control oil way, and a third throttling hole is arranged between the second spring cavity and the locking control oil way.
A fifth orifice is arranged between the first oil inlet passage and the unlocking pressure control valve, a fourth orifice is arranged between the first oil inlet passage and the locking pressure control valve, and a sixth orifice is arranged between the oil drain passage and the one-way valve.
The hydraulic control oil way of the hydraulic torque converter has the following beneficial effects:
(1) The unlocking pressure of the hydraulic torque converter can be stably controlled, and the unlocking pressure is not influenced by the output flow of the mechanical oil pump;
(2) The locking pressure of the hydraulic torque converter can be stably controlled, and the sliding grinding and locking control of the hydraulic torque converter can be realized;
(3) Providing a cooling and lubricating oil way for the transmission in an unlocking state and a locking state of the hydraulic torque converter;
(4) Air is prevented from entering the oil way through the one-way valve, so that the influence of the air on the control of the system pressure is avoided.
Drawings
The present specification includes the following drawings, the contents of which are respectively:
FIG. 1 is a schematic diagram of the hydraulic control circuit of the torque converter of the present invention;
FIG. 2 is a schematic diagram of the structure of an unlock pressure control valve;
FIG. 3 is a schematic diagram of a latching pressure control valve;
FIG. 4 is another schematic construction of a hydraulic control circuit of the torque converter of the present invention;
marked in the figure as:
1. a torque converter; 2. unlocking the pressure control valve; 3. locking the pressure control valve; 4. a pilot-operated solenoid valve; 5. a one-way valve; 6. a first oil inlet passage; 7. a second oil inlet passage; 8. a third oil inlet passage; 9. a first cooling and lubricating oil path; 10. unlocking the control oil circuit; 11. locking a control oil circuit TCA; 12. the pilot valve controls an oil path; 13. an oil drain path; 14. a second cooling and lubricating oil path; 15. a first orifice; 16. a second orifice; 17. a third orifice; 18. a fourth orifice; 19. a fifth orifice; 20. a sixth orifice;
21. a first valve core; 22. a first return spring; 23. a first control oil cavity of the pilot electromagnetic valve; 24. a first oil inlet; 25. a first oil outlet; 26. a first oil drain port; 27. a first cooling oil outlet; 28. a first cooling oil inlet; 29. a second oil drain port;
31. a second valve core; 32. a second return spring; 33. a second spring oil chamber; 34. a third oil drain port; 35. a second oil outlet; 36. a second oil inlet; 37. a third oil inlet; 38. locking the pressure oil inlet and outlet; 39. a second cooling oil outlet; 40. and a second control oil chamber.
Description of the embodiments
The following detailed description of the embodiments of the invention, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate and thorough understanding of the concepts and aspects of the invention, and to aid in its practice, by those skilled in the art.
In the following embodiments, the "first", "second", "third", "fourth", "fifth" and "sixth" do not represent absolute differences in structure and/or function, nor represent sequential execution order, but are merely for convenience of description.
As shown in fig. 1, the present invention provides a torque converter hydraulic control oil passage including a torque converter 1, a lockup pressure control valve 3 communicating with the torque converter 1, an unlock pressure control valve 2 communicating with the torque converter 1, a pilot solenoid valve 4 communicating with the lockup pressure control valve 3 and the unlock pressure control valve 2 simultaneously through a pilot control oil passage 12, a check valve 5 communicating with the unlock pressure control valve 2, a first oil intake oil passage 6 communicating with the lockup pressure control valve 3 and the unlock pressure control valve 2 simultaneously, a second oil intake oil passage 7 communicating with the lockup pressure control valve 2, a third oil intake oil passage 8 communicating with the pilot solenoid valve 4, a first cooling lubrication oil passage 9 communicating with the lockup pressure control valve 3 and the unlock pressure control valve 2 simultaneously, a lockup control oil passage 11 provided between the torque converter 1 and the lockup pressure control valve 3 and a drain oil passage 13 provided between the lockup pressure control valve 2 and the check valve 5, and a second cooling lubrication oil passage 14 provided between the lockup pressure control valve 3 and the unlock pressure control valve 2.
Specifically, as shown in fig. 2, the unlock pressure control valve 2 includes a first valve body, a first spool 21 movably provided in the first valve body, and a first return spring 22 that applies an elastic force to the first spool 21. The first valve core 21 is a three-section valve core, the first valve core 21 comprises a first left end core body, a first middle section core body and a first right end core body which are sequentially arranged along the axial direction, the first left end core body, the first middle section core body and the first right end core body are cylindrical and coaxially arranged, the diameter of the first left end core body is smaller than that of the first middle section core body and the first right end core body, the diameters of the first middle section core body and the first right end core body are the same, two ends of the first middle section core body in the length direction are fixedly connected with the first left end core body and the first right end core body through connecting sections respectively, and the diameter of the connecting sections is smaller than that of the first left end core body, the first middle section core body and the first right end core body. The first valve body is internally provided with a first spring cavity for accommodating a first return spring 22, the first right end core body is positioned between the first middle core body and the first return spring 22, the first return spring 22 is clamped between the end face of the first right end core body and the inner wall face of the first valve body, and the first return spring 22 is a compression spring.
As shown in fig. 1 and 2, the first valve body is provided with a first oil inlet 24 connected with the first oil inlet passage 6, a first oil drain 26 and a second oil drain 29 connected with the oil drain passage 13, a first oil outlet 25 connected with the unlocking control oil passage 10, a first cooling oil outlet 27 connected with the first cooling lubrication oil passage 9, and a first cooling oil inlet 28 connected with the second cooling lubrication oil passage 14, and the first oil inlet 24, the first oil drain 26, the first cooling oil outlet 27, the first cooling oil inlet 28, and the second oil drain 29 are sequentially arranged along the axial direction of the first valve body, and the first oil inlet 24, the first oil drain 26, the first cooling oil outlet 27, the first cooling oil inlet 28, and the second oil drain 29 are positioned on one side of the first valve element 21, and the first oil outlet 25 is positioned on the other side of the first valve element 21. The first valve body is internally provided with a first control oil chamber 23, the first valve spool 21 is located between the first control oil chamber 23 and a first return spring 22, and the first return spring 22 is used for applying an elastic force to the first valve spool 21 to move the first valve spool 21 in the axial direction toward the first control oil chamber 23. After the pressure oil passes through the space between the first left end core body and the first middle section core body, the pressure oil generates thrust to the first valve core 21 which moves towards the first spring cavity due to the difference of the end areas of the first left end core body and the first middle section core body, meanwhile, the oil in the pilot valve control oil way 12 enters the first control oil cavity 23 of the unlocking pressure control valve, thrust to the first valve core 21 which moves towards the first spring cavity is also generated, meanwhile, the first return spring 22 applies elastic acting force to the first valve core 21 which enables the first valve core 21 to move towards the first control oil cavity 23 along the axial direction, and stable control of unlocking pressure of the hydraulic torque converter is realized through mutual balance of the three acting forces.
As shown in fig. 1 and 2, the first control oil chamber 23 of the unlock pressure control valve 2 communicates with the pilot control oil passage 12 and is provided with a second orifice 16 having a diameter Φ1.7mm, the first oil inlet 24 communicates with the first oil inlet passage 6 and is provided with a fifth orifice 19 having a diameter Φ3.5mm, the first oil outlet 25 communicates with the unlock control oil passage 10, the first drain port 26 and the second drain port 29 of the unlock pressure control valve 2 communicate with the check valve 5 through the drain oil passage 13, and a sixth orifice 20 having a diameter Φ7.5mm is provided, the first cooling oil inlet 28 communicates with the lock pressure control valve 3 through the second cooling oil passage 14, and the first cooling oil outlet 27 communicates with the first cooling oil passage 9. The second orifice 16 is used for stabilizing the oil pressure of the first control oil chamber 23, the fifth orifice 19 is used for controlling the oil flow speed of the first oil inlet passage 6 into the first oil inlet 24 and stabilizing the oil pressure, and the sixth orifice 20 is used for controlling the oil flow speed of the oil drain passage 13 during the oil drain process.
When the torque converter 1 is in the unlock state, the pilot type solenoid valve 4 generates a thrust force to move toward the first spring chamber to the first valve spool 21 by controlling the output pressure, after the pressure oil from the pilot type solenoid valve 4 enters the unlock pressure control valve 2, the pressure oil from the first oil inlet passage 6 generates a thrust force to move toward the first spring chamber to the first valve spool 21 due to a difference in area between both ends when passing between the first left end core and the first middle section core of the first valve spool 21, and the first return spring 22 applies an elastic force to move toward the first control oil chamber 23 in the axial direction to the first valve spool 21, so that the unlock pressure of the torque converter 1 is stably controlled by the mutual balance of the three forces.
As shown in fig. 1 and 3, the latching pressure control valve 3 includes a second valve body, a second spool 31 provided in the second valve body, and a second return spring 32 that applies an elastic force to the second spool 31. The second valve core 31 is a four-section valve core, the second valve core 31 comprises a second left end core body, a second middle section core body, a third middle section core body and a second right end core body which are sequentially arranged along the axial direction, the diameter of the second left end core body is smaller than that of the second middle section core body, the third middle section core body and the second right end core body, the diameters of the second middle section core body, the third middle section core body and the second right end core body are the same, and the second return spring 32 is clamped between the second left end core body and the second valve body. The second left end core, the second middle section core, the third middle section core and the second right end core are the cylinder and four coaxial settings, the diameter of second left end core is less than the diameter of second middle section core, third middle section core and second right end core and the diameter of second middle section core, third middle section core and second right end core is the same, the both ends in the length direction of second middle section core are respectively through a linkage segment and the one end fixed connection of second left end core and third middle section core, the other end of third middle section core is through a linkage segment and the one end fixed connection of second right end core, the diameter of linkage segment is less than the diameter of second left end core, second middle section core, third middle section core and second right end core. The second valve body is internally provided with a second spring cavity 33 for accommodating the second return spring 22, the second spring cavity 33 is communicated with the locking control oil circuit 11, the second left end core body is positioned between the second middle core body and the second return spring 22, the second return spring 22 is clamped between the end face of the second left end core body and the inner wall face of the second valve body, and the second return spring 22 is a compression spring.
As shown in fig. 1 and 3, the second valve body is provided with a third drain port 34, a second oil outlet 35 connected to the first cooling and lubrication oil passage 9, a second oil inlet 36 connected to the first oil intake oil passage 6, a lock pressure oil inlet 38 connected to the lock control oil passage 11, a second cooling oil outlet 39 connected to the second cooling and lubrication oil passage 14, and a third oil inlet 37 connected to the second oil intake oil passage 7. The third oil drain 34, the second oil outlet 35, the second oil inlet 36, the locking pressure oil inlet 38 and the second cooling oil outlet 39 are sequentially arranged along the axial direction of the second valve body, the third oil drain 34, the second oil outlet 35, the second oil inlet 36, the locking pressure oil inlet 38 and the second cooling oil outlet 39 are positioned on one side of the second valve core 31, and the third oil inlet 37 is positioned on the other side of the second valve core 31. The right side of the second spring oil cavity 33 is a third oil drain port 34 for draining oil leaked from the gaps between the valve cores at the left and right ends.
The second valve body is internally provided with a second control oil chamber 40, the second control oil chamber 40 is communicated with the pilot valve control oil path 12, the second valve core 31 is positioned between the second control oil chamber 40 and the second return spring 32, and the second return spring 32 is used for applying elastic acting force to the second valve core 31 to enable the second valve core 31 to move towards the second control oil chamber 40 along the axial direction. The second return spring applies elastic force to the second valve core 31 to enable the second valve core 31 to move towards the second control oil cavity 40 along the axial direction, meanwhile, after the oil in the locking control oil way enters the second spring cavity 33, thrust force to enable the second valve core 31 to move towards the second control oil cavity 40 along the axial direction is generated, after the oil in the pilot valve control oil way enters the second control oil cavity 40, thrust force to enable the second valve core 31 to move towards the second spring cavity 33 along the axial direction is generated, and the position in the second valve core 31 is controlled through mutual balance of the three acting forces, so that stable control of locking pressure of the hydraulic torque converter can be achieved.
As shown in fig. 1 and 3, the lockup pressure control valve 3 communicates with the torque converter 1 through the lockup control oil passage 11, the lockup control oil passage 11 communicates with the second spring oil chamber 33 and the lockup pressure oil inlet/outlet 38 on the leftmost side of the lockup pressure control valve 3, respectively, and a third orifice 17 having a diameter Φ1.3mm is provided at the front end of the second spring oil chamber 33, the first cooling lubrication oil passage 9 communicates with the second oil inlet/outlet 35, the first oil inlet oil passage 6 communicates with the second oil inlet 36 and a fourth orifice 18 having a diameter Φ2.7mm is provided, the second oil inlet oil passage 7 communicates with the lockup pressure control valve second oil passage oil inlet 37, when the second spool 31 of the lockup pressure control valve 3 is on the rightmost side, the oil of the second oil inlet oil passage 7 cannot pass through the lockup pressure control valve 3, the second cooling oil passage communicates with the lockup pressure control valve cooling oil outlet 39, the pilot solenoid valve 4 communicates with the pilot solenoid valve second control oil chamber 40 of the lockup pressure control valve 3 through the pilot oil passage 12 and a first orifice 40 having a diameter Φ1.7mm is provided. The third orifice 17 is used for stabilizing the oil pressure of the second spring oil chamber 33, the fourth orifice 18 is used for controlling the oil flow speed and the oil pressure of the first oil inlet passage 6 into the second oil inlet 36 to be stabilized, and the first orifice 15 is used for stabilizing the oil pressure of the second control oil chamber 40.
As shown in fig. 1, when the torque converter 1 is in the unlocked state, the first return spring 22 of the unlock pressure control valve 2 is in an extended state, the second return spring 32 of the lock pressure control valve 3 is in an extended state, the first oil outlet 25 is communicated with the first oil inlet 24, the lock pressure oil inlet 38 is communicated with the second cooling oil outlet 39, the oil in the first oil intake passage 6 enters the unlock pressure control valve 2, the oil pressure entering the unlock control oil passage 10 is stably controlled by the output pressure of the pilot solenoid valve 4, the pressure difference generated by the first valve spool 21, and the spring force generated by the first return spring 22, the pressure oil in the unlock control oil passage 10 enters the torque converter 1, the oil in the torque converter 1 enters the lock pressure control valve 3 by the lock control oil passage 11, then enters the unlock pressure control valve 2 by the second cooling oil passage 14, and finally enters the first cooling oil passage 9.
As shown in fig. 4, when the torque converter 1 is in the lockup state, the second return spring 32 is in a compressed state, the third oil inlet 37 is communicated with the lockup pressure oil inlet 38, the oil in the second oil inlet passage 7 enters the lockup pressure control valve 3, and the oil pressure entering the lockup control oil passage 11 is stably controlled by the output pressure of the pilot electromagnetic valve 4, the spring force generated by the second return spring 32 and the feedback pressure of the lockup control oil passage 11, so that the pressure oil in the lockup control oil passage 11 enters the torque converter 1 to realize the control of the friction and lockup of the torque converter 1.
As shown in fig. 2 and 4, when the torque converter 1 is in the lockup state, the first spool 21 of the lockup pressure control valve 2 moves toward the first spring chamber, the first return spring 22 is compressed, since the first spool 21 of the lockup pressure control valve 2 is in the rightmost position, the oil in the first oil intake passage 6 may not pass through the lockup pressure control valve 2, the first oil outlet 25 communicates with the first oil drain port 26, the lockup control oil passage 10 communicates with the oil drain passage 13 through the first oil drain port 26 of the lockup pressure control valve 2, the second cooling and lubrication oil passage 14 communicates with the oil drain passage 13 through the second oil drain port 29 of the lockup pressure control valve 2, the pressure oil in the oil drain passage 13 is discharged through the check valve 5, and the opening pressure of the check valve 5 is 0.1bar to prevent all of the oil in the oil drain passage 13 and the second cooling and lubrication oil passage 14 from flowing out into the air.
As shown in fig. 3 and 4, when the torque converter 1 is in the lockup state, the second oil feed inlet 36 communicates with the second oil feed outlet 35, and the oil in the first oil feed passage 6 enters the lockup pressure control valve 3 through the second oil feed inlet 36 and then enters the first cooling lubrication oil passage 9 through the second oil feed outlet 35.
Therefore, when the torque converter 1 is unlocked, hydraulic oil flows through the torque converter 1 through the unlock pressure control valve 2 and finally flows to the lockup pressure control valve 3, and the unlock pressure stabilization control of the torque converter 1 is achieved through the unlock pressure control valve 2 and the pilot-operated solenoid valve 4. When the torque converter 1 is locked, hydraulic oil can flow to the torque converter 1 through the locking pressure control valve 3, and locking pressure stability control of the torque converter 1 can be realized through the locking pressure control valve 3 and the pilot type electromagnetic valve 4.
The hydraulic control oil way of the hydraulic torque converter with the structure has the following advantages:
(1) The unlocking pressure of the hydraulic torque converter is stably controlled, and the unlocking pressure is not influenced by the output flow of the mechanical oil pump;
(2) The locking pressure of the hydraulic torque converter is stably controlled, so that the sliding grinding and locking control of the hydraulic torque converter are realized;
(3) Providing a cooling and lubricating oil way for the transmission in an unlocking state and a locking state of the hydraulic torque converter;
(4) Air is prevented from entering the oil way through the one-way valve, so that the influence of the air on the control of the system pressure is avoided.
The invention is described above by way of example with reference to the accompanying drawings. It will be clear that the invention is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present invention; or the invention is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the invention.
Claims (7)
1. Hydraulic control oil circuit of hydraulic torque converter, its characterized in that: the hydraulic torque converter comprises a check valve, an unlocking pressure control valve and a pilot type electromagnetic valve, wherein an unlocking control oil way is arranged between the unlocking pressure control valve and the hydraulic torque converter, the pilot type electromagnetic valve is communicated with the unlocking pressure control valve through a pilot valve control oil way, the unlocking pressure control valve is communicated with a first oil inlet oil way, and the unlocking pressure control valve is communicated with the check valve through an oil drain oil way;
the unlocking pressure control valve comprises a first valve body, a first valve core and a first return spring, wherein the first valve core is arranged in the first valve body, elastic acting force is applied to the first valve core, the first valve core is a three-section valve core, the first valve core comprises a first left end core body, a first middle section core body and a first right end core body which are sequentially arranged along the axial direction, the diameter of the first left end core body is smaller than that of the first middle section core body and that of the first right end core body, the diameters of the first middle section core body and the first right end core body are the same, and after pressure oil passes through the space between the first left end core body and the first middle section core body, the pressure oil pushes the first valve core to move, and the first return spring is compressed;
the hydraulic torque converter hydraulic control oil circuit further comprises a blocking pressure control valve communicated with the unlocking pressure control valve, a blocking control oil circuit is arranged between the blocking pressure control valve and the hydraulic torque converter, the pilot electromagnetic valve is communicated with the blocking pressure control valve through the pilot valve control oil circuit, and the blocking pressure control valve is respectively communicated with the first oil inlet oil circuit and the second oil inlet oil circuit;
the locking pressure control valve comprises a second valve body, a second valve core arranged in the second valve body and a second return spring applying elastic acting force to the second valve core, wherein the second valve core is a four-section valve core, the second valve core comprises a second left end core body, a second middle section core body, a third middle section core body and a second right end core body which are sequentially arranged along the axial direction, the diameter of the second left end core body is smaller than that of the second middle section core body, the diameter of the third middle section core body and the diameter of the second right end core body, the diameters of the second middle section core body, the diameter of the third middle section core body and the diameter of the second right end core body are the same, and the second return spring is clamped between the second left end core body and the second valve body.
2. The torque converter hydraulic control oil passage according to claim 1, characterized in that: the first valve body is provided with a first oil inlet connected with the first oil inlet oil way, and a first oil drain port and a second oil drain port connected with the oil drain oil way.
3. The torque converter hydraulic control oil passage according to claim 1, characterized in that: the second valve body is provided with a second oil outlet connected with the first cooling lubricating oil way, a second oil inlet connected with the first oil inlet oil way, a locking pressure oil inlet and outlet connected with the locking control oil way, a second cooling oil outlet connected with the second cooling lubricating oil way and a third oil inlet connected with the second oil inlet oil way.
4. The torque converter hydraulic control oil passage according to claim 1, characterized in that: the unlocking pressure control valve and the locking pressure control valve are connected with the first cooling lubrication oil way, the unlocking pressure control valve is communicated with the locking pressure control valve through the second cooling lubrication oil way, and the locking pressure control valve is connected with the second oil inlet oil way.
5. The torque converter hydraulic control oil passage according to claim 1, characterized in that: a first throttling hole is arranged between the pilot valve control oil way and the locking pressure control valve, and a second throttling hole is arranged between the pilot valve control oil way and the unlocking pressure control valve.
6. The torque converter hydraulic control oil passage according to claim 3, characterized in that: the second valve body is provided with a locking pressure oil inlet and a locking pressure oil outlet which are connected with the locking control oil way, a second spring cavity which is used for accommodating the second return spring is arranged in the second valve body, the second spring cavity is connected with the locking control oil way, and a third throttling hole is arranged between the second spring cavity and the locking control oil way.
7. The torque converter hydraulic control oil passage according to claim 1, characterized in that: a fifth orifice is arranged between the first oil inlet passage and the unlocking pressure control valve, a fourth orifice is arranged between the first oil inlet passage and the locking pressure control valve, and a sixth orifice is arranged between the oil drain passage and the one-way valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311014962.8A CN116753283B (en) | 2023-08-14 | 2023-08-14 | Hydraulic control oil circuit of hydraulic torque converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311014962.8A CN116753283B (en) | 2023-08-14 | 2023-08-14 | Hydraulic control oil circuit of hydraulic torque converter |
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| CN116753283A CN116753283A (en) | 2023-09-15 |
| CN116753283B true CN116753283B (en) | 2023-11-03 |
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| JP2007155081A (en) * | 2005-12-08 | 2007-06-21 | Aisin Seiki Co Ltd | Hydraulic control device for automatic transmission |
| KR101526403B1 (en) * | 2013-12-18 | 2015-06-08 | 현대자동차 주식회사 | A hydraulic control apparatus for hydraulic torque converter |
| CN110159751A (en) * | 2019-06-10 | 2019-08-23 | 湘潭大学 | A kind of converter lockout slippage, cooling electrofluidic control device and control method |
| CN112283186A (en) * | 2020-12-07 | 2021-01-29 | 盛瑞传动股份有限公司 | Hydraulic control system of automatic transmission and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190080488A (en) * | 2017-12-28 | 2019-07-08 | 현대자동차주식회사 | Oil pressure supply system of automatic transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007155081A (en) * | 2005-12-08 | 2007-06-21 | Aisin Seiki Co Ltd | Hydraulic control device for automatic transmission |
| KR101526403B1 (en) * | 2013-12-18 | 2015-06-08 | 현대자동차 주식회사 | A hydraulic control apparatus for hydraulic torque converter |
| CN110159751A (en) * | 2019-06-10 | 2019-08-23 | 湘潭大学 | A kind of converter lockout slippage, cooling electrofluidic control device and control method |
| CN112283186A (en) * | 2020-12-07 | 2021-01-29 | 盛瑞传动股份有限公司 | Hydraulic control system of automatic transmission and control method thereof |
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| CN116753283A (en) | 2023-09-15 |
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