CN213088564U - Hydraulic system of hybrid transmission - Google Patents
Hydraulic system of hybrid transmission Download PDFInfo
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- CN213088564U CN213088564U CN202021936844.4U CN202021936844U CN213088564U CN 213088564 U CN213088564 U CN 213088564U CN 202021936844 U CN202021936844 U CN 202021936844U CN 213088564 U CN213088564 U CN 213088564U
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Abstract
The utility model belongs to the technical field of the derailleur, a mix variable-speed transmission hydraulic system is disclosed, include: the cooling oil path is provided with a first oil pump, a one-way valve I, a one-way valve II and a cooling flow regulating valve, the outlet end of the first oil pump is provided with the one-way valve I and the one-way valve II, the cooling flow regulating valve is arranged at the tail end of the cooling oil path, and the outlet end of the cooling flow regulating valve is connected with a motor cooling branch and a clutch cooling branch in parallel; the main oil way is provided with a second oil pump and a main oil way pressure regulating valve, and the outlet end of the main oil way pressure regulating valve is connected to the cooling oil way; the inlet ends of the first oil pump and the second oil pump feed oil from an oil sump through a filter. The first oil pump is driven by the motor and supplies oil to the cooling oil way, the second oil pump is driven by the engine and supplies high pressure to the main oil way and supplies oil to the cooling oil way, the cooling flow regulating valve distributes flow to the motor cooling branch and the clutch cooling branch, and the pressure of the main oil way can be controlled as required, so that the energy loss is reduced.
Description
Technical Field
The utility model relates to a derailleur technical field especially relates to a mix and move derailleur hydraulic system.
Background
In a hybrid transmission, clutch pressure needs to be controlled by a hydraulic system to realize clutch separation and combination, thereby realizing different power transmission. In addition, a hydraulic system is required to provide cooling oil, so that the components such as a clutch, a motor (a driving motor and a generator), shaft teeth and the like are cooled, and the oil flow in each oil way is adjusted according to requirements. The oil pump inputs oil to the hydraulic system to establish pressure and flow.
In the hybrid transmission, if the oil pump is driven by the motor, when the vehicle is reversed, the motor rotates reversely, and the oil pump cannot output oil; if the oil pump is driven by the engine, the engine does not rotate during pure electric driving, and the oil pump cannot output oil.
Therefore, in the hybrid transmission with the configuration, two oil pumps need to be arranged to provide oil for a hydraulic system, or an electric oil pump provides oil, so that a larger oil pump is needed, and excessive cooling flow is output, and energy loss is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mix and move derailleur hydraulic system to solve and need great oil pump and then export too much cooling flow, cause energy loss's problem.
To achieve the purpose, the utility model adopts the following technical proposal:
a hybrid transmission hydraulic system, comprising:
the cooling oil path is provided with a first oil pump, a one-way valve I, a one-way valve II and a cooling flow regulating valve, the first oil pump is driven by a motor, the outlet end of the first oil pump is provided with the one-way valve I and the one-way valve II, the cooling flow regulating valve is arranged at the tail end of the cooling oil path, and the outlet end of the cooling flow regulating valve is connected with a motor cooling branch and a clutch cooling branch in parallel;
the main oil way is provided with a second oil pump and a main oil way pressure regulating valve, the second oil pump is driven by an engine, and the outlet end of the main oil way pressure regulating valve is connected to the cooling oil way; wherein:
and the inlet ends of the first oil pump and the second oil pump are fed with oil from an oil pan through a filter.
The first oil pump of the hydraulic system of the hybrid transmission is driven by a motor and supplies oil to a cooling oil way, the second oil pump is driven by the engine and supplies high pressure to a main oil way and supplies oil to the cooling oil way, the cooling flow regulating valve distributes flow to a motor cooling branch and a clutch cooling branch, the pressure of the main oil way can be controlled according to requirements, and energy loss is reduced.
In a preferable embodiment of the hydraulic system of the hybrid transmission, the cooling flow rate adjustment valve is a two-position four-way mechanical valve. The two-position four-way mechanical valve distributes flow to the motor cooling branch and the clutch cooling branch through the oil pressure of the clutch cooling branch, avoids control by an electromagnetic valve, and reduces the occupied volume of the system.
As a preferable mode of the hydraulic system of the hybrid transmission, the cooling flow control valve is provided with a first inlet, a second inlet, a first outlet, and a second outlet, the first inlet, the first outlet, and the clutch cooling branch can be communicated to form a first flow passage, and the second inlet, the second outlet, and the motor cooling branch can be communicated to form a second flow passage.
As a preferable mode of the hydraulic system of the hybrid transmission, the cooling flow rate adjustment valve is provided with a valve element and a spring, one end of the valve element is connected to the spring, and the valve element is subjected to a combined action of the hydraulic pressure and the spring to reciprocate in an arrangement direction of the first inlet and the second inlet to selectively open the first flow passage and the second flow passage.
When the cooling oil way is empty of oil or the oil amount is small, the valve core is under the action of elastic force, the first inlet is communicated with the first outlet, the second inlet is communicated with the second outlet, and the oil passes through the first inlet and the first outlet and is used for cooling the clutch. When the oil quantity of the cooling oil way is increased, the flow of the first inlet is increased, the pressure of the first outlet is increased, the valve element is pushed to overcome the elastic force, the opening degrees of the first inlet and the first outlet are gradually reduced, and the opening degrees of the second inlet and the second outlet are gradually increased. Through the regulation of the regulating valve, the pressure of the first inlet is not increased along with the increase of the oil flow of the cooling oil way, so that the flow of the first inlet is not increased continuously, and more flows are distributed to the motor cooling branch.
As a preferable scheme of the hydraulic system of the hybrid transmission, the main oil path is further provided with a main oil path pressure solenoid valve, and the main oil path pressure solenoid valve is connected with the main oil path pressure regulating valve. The main oil line pressure solenoid valve can adjust the main oil line pressure regulating valve.
As a preferable mode of the hydraulic system of the hybrid transmission, the main oil passage is further provided with a main oil passage unloading valve. When the pressure of the main oil way rises to a set value, the unloading valve of the main oil way is opened, and the damage to the system caused by overhigh pressure of the main oil way is avoided.
As a preferable mode of the hydraulic system of the hybrid transmission, the cooling oil passage is further provided with a low-pressure unloading valve. When the pressure of the oil way reaches a set value, the low-pressure unloading valve is opened, so that the damage to the system caused by overhigh pressure of the oil way is avoided.
As a preferable scheme of the hydraulic system of the hybrid transmission, the hydraulic system further comprises a clutch pressure solenoid valve, one end of the clutch pressure solenoid valve is connected with the main oil path, and the other end of the clutch pressure solenoid valve is connected with a clutch piston cavity. The clutch pressure solenoid valve controls the pressure of the clutch piston cavity according to the oil pressure of the main oil circuit.
The utility model has the advantages that: the first oil pump of the hydraulic system of the hybrid transmission is driven by a motor and supplies oil to a cooling oil way, the second oil pump is driven by the engine and supplies high pressure to a main oil way and supplies oil to the cooling oil way, the cooling flow regulating valve distributes flow to a motor cooling branch and a clutch cooling branch, the pressure of the main oil way can be controlled according to requirements, and energy loss is reduced.
Drawings
FIG. 1 is a coupling diagram of a hydraulic system of a hybrid transmission according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a cooling flow rate adjustment valve in a hydraulic system of a hybrid transmission according to an embodiment of the present application.
In the figure:
1-a first oil pump; 2-a one-way valve I; 3-a one-way valve II; 4-cooling flow regulating valve; 5-a second oil pump; 6-main oil line pressure regulating valve; 7-a filter; 8-oil pan; 9-main oil line pressure solenoid valve; 10-main oil way unloading valve; 11-a low pressure relief valve; 12-clutch pressure solenoid valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Fig. 1 is a connection relationship diagram of a hydraulic system of a hybrid transmission according to an embodiment of the present invention.
The hydraulic system of the hybrid transmission comprises a main oil way and a cooling oil way, the main oil way is communicated to the cooling oil way and supplies oil to the cooling oil way, a motor cooling branch and a clutch cooling branch are arranged at the tail end of the cooling oil way, the motor cooling branch cools a motor, and the clutch cooling branch cools a clutch.
Be equipped with first oil pump 1, check valve one 2, check valve two 3 and cooling flow control valve 4 on the cooling oil circuit, first oil pump 1 is by motor drive, and the exit end of first oil pump 1 is equipped with check valve one 2 and check valve two 3, and cooling flow control valve 4 sets up the end at the cooling oil circuit, and motor cooling branch road and clutch cooling branch road are connected in parallel to the exit end of cooling flow control valve 4.
Further, the cooling flow control valve 4 is a two-position four-way mechanical valve, and the valve core position of the cooling flow control valve 4 is adjusted by the oil line pressure of one of the outlets. The two-position four-way mechanical valve distributes flow to the motor cooling branch and the clutch cooling branch through the oil pressure of the clutch cooling branch, avoids control by an electromagnetic valve, and reduces the occupied volume of the system.
Fig. 2 is a schematic structural diagram of a cooling flow rate adjustment valve in a hydraulic system of a hybrid transmission according to an embodiment of the present application. The cooling flow rate control valve 4 has a first inlet P1, a second inlet P2, a first outlet a, and a second outlet B.
The first inlet P1 is connected to the first outlet a after passing through the valve and is connected to the clutch cooling branch. And a second inlet P2 is communicated with a second outlet B after passing through the valve, and is further connected with a motor cooling branch.
A valve core and a spring are arranged in the cooling flow regulating valve 4, and one end of the valve core is communicated with the first outlet A through a throttling hole. When the cooling oil path is empty or the oil amount is small, the valve core of the regulating valve is under the action of spring force, the first inlet P1 is communicated with the first outlet A, the second inlet P2 is not communicated with the second outlet B, and the oil passes through the first inlet P1 and the first outlet A and is used for cooling the clutch. The first inlet P1, the first outlet a, and the clutch cooling branch can communicate to form a first flow passage, and the second inlet P2, the second outlet B, and the motor cooling branch can communicate to form a second flow passage.
One end of the valve core is connected with a spring, and the valve core is subjected to the combined action of hydraulic pressure and the spring and reciprocates along the arrangement direction (the left and right direction in figure 2) of the first inlet P1 and the second inlet P2 so as to selectively open the first flow passage and the second flow passage.
When the oil quantity of the cooling oil path is increased, the flow of the first outlet A is increased, the pressure of the first outlet A is increased, the valve core of the regulating valve is pushed to move towards the spring end, the opening degrees of the first inlet P1 and the first outlet A are gradually reduced, and the opening degrees of the second inlet P2 and the second outlet B are gradually increased. Through the regulation of the regulating valve, the pressure of the first outlet A is not increased along with the increase of the oil flow of the cooling oil way, so that the flow of the first outlet A is not increased continuously, and more flows are distributed to the motor cooling branch.
That is, when the flow rate of the cooling oil passage is small, the clutch is preferentially cooled, and as the flow rate of the cooling oil passage increases, the flow rate of the cooling oil that is distributed to the clutch does not increase after reaching the set value, and more cooling oil is distributed to the motor cooling branch.
And a second oil pump 5 and a main oil way pressure regulating valve 6 are arranged on the main oil way, the second oil pump 5 is driven by an engine, and the outlet end of the main oil way pressure regulating valve 6 is connected to the cooling oil way. The oil pressure of the main oil passage is greater than that of the cooling oil passage.
Note that the inlet ends of the first oil pump 1 and the second oil pump 5 are fed from the oil pan 8 through the filter 7.
The first oil pump 1 is driven by the motor and supplies oil to the cooling oil path, and the second oil pump 5 is driven by the engine and supplies high pressure to the main oil path and supplies oil to the cooling oil path.
The main oil passage is further provided with a main oil passage pressure solenoid valve 9, and the main oil passage pressure solenoid valve 9 performs pilot adjustment on the main oil passage pressure regulating valve 6.
The main oil circuit is also provided with a main oil circuit unloading valve 10. When the pressure of the main oil way rises to a set value, the main oil way unloading valve 10 is opened, and the damage to the system caused by overhigh pressure of the main oil way is avoided.
The cooling oil circuit is also provided with a low-pressure unloading valve 11. When the oil line pressure reaches a set value, the low-pressure unloading valve 11 is opened, so that the damage to the system caused by overhigh oil line pressure is avoided.
It should be noted that the system further includes a clutch pressure solenoid valve 12, and an input port of the clutch pressure solenoid valve 12 is connected to the main oil passage for controlling the pressure applied to the clutch piston chamber. An output oil passage of the clutch pressure solenoid valve 12 is provided with a pressure sensor for detecting the pressure of the output oil passage of the clutch pressure solenoid valve 12.
The hydraulic system of the hybrid transmission of the embodiment has the working principle that: the first oil pump 1 and the second oil pump 5 absorb oil from an oil pan 8 through a filter 7, oil respectively enters a cooling oil path from the first oil pump 1 and enters a main oil path from the second oil pump 5 and then enters a cooling oil path, the oil is in the main oil path, a main oil path pressure regulating valve 6 is used for regulating the pressure of the main oil path, when the pressure of the main oil path rises to a set value, a main oil path unloading valve 10 is opened to avoid damage to a system caused by overhigh pressure of the main oil path, if the pressure of the cooling oil path is overhigh, a low-pressure unloading valve 11 is opened for regulation, and the oil enters a cooling flow regulating valve 4 and selectively enters a motor cooling branch and a clutch cooling branch.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A hybrid transmission hydraulic system, comprising:
the cooling oil circuit is provided with a first oil pump (1), a one-way valve I (2), a one-way valve II (3) and a cooling flow regulating valve (4), the first oil pump (1) is driven by a motor, the one-way valve I (2) and the one-way valve II (3) are arranged at the outlet end of the first oil pump (1), the cooling flow regulating valve (4) is arranged at the tail end of the cooling oil circuit, and the outlet end of the cooling flow regulating valve (4) is connected with a motor cooling branch and a clutch cooling branch in parallel;
the main oil way is provided with a second oil pump (5) and a main oil way pressure regulating valve (6), the second oil pump (5) is driven by an engine, and the outlet end of the main oil way pressure regulating valve (6) is connected to the cooling oil way; wherein:
the inlet ends of the first oil pump (1) and the second oil pump (5) are fed with oil from an oil pan (8) through a filter (7).
2. Hybrid transmission hydraulic system according to claim 1, characterized in that the cooling flow regulating valve (4) is a two-position four-way mechanical valve.
3. Hybrid transmission hydraulic system according to claim 2, characterized in that the cooling flow control valve (4) is provided with a first inlet, a second inlet, a first outlet and a second outlet, the first inlet, the first outlet and the clutch cooling branch being communicable to form a first flow passage, the second inlet, the second outlet and the motor cooling branch being communicable to form a second flow passage.
4. The hybrid transmission hydraulic system according to claim 3, wherein the cooling flow regulating valve (4) is provided with a spool and a spring, one end of the spool is connected to the spring, and the spool is reciprocated in the arrangement direction of the first and second inlets by the combined force of the hydraulic pressure and the spring to selectively open the first and second flow passages.
5. Hybrid transmission hydraulic system according to claim 1, characterized in that the main oil circuit is further provided with a main oil circuit pressure solenoid valve (9), the main oil circuit pressure solenoid valve (9) being connected with the main oil circuit pressure regulating valve (6).
6. Hybrid transmission hydraulic system according to claim 1, characterized in that the main oil circuit is further provided with a main oil circuit relief valve (10).
7. Hybrid transmission hydraulic system according to claim 1, characterized in that the cooling circuit is also provided with a low pressure relief valve (11).
8. The hydraulic system of a hybrid transmission according to claim 6, further comprising a clutch pressure solenoid valve (12), one end of the clutch pressure solenoid valve (12) being connected to the main oil passage and the other end being connected to a clutch piston chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021936844.4U CN213088564U (en) | 2020-09-07 | 2020-09-07 | Hydraulic system of hybrid transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021936844.4U CN213088564U (en) | 2020-09-07 | 2020-09-07 | Hydraulic system of hybrid transmission |
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| CN213088564U true CN213088564U (en) | 2021-04-30 |
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| CN202021936844.4U Active CN213088564U (en) | 2020-09-07 | 2020-09-07 | Hydraulic system of hybrid transmission |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357352A (en) * | 2021-06-18 | 2021-09-07 | 中国第一汽车股份有限公司 | Cooling control valve, control method, dual-clutch transmission cooling system and vehicle |
| CN114024410A (en) * | 2022-01-05 | 2022-02-08 | 苏州英磁新能源科技有限公司 | Motor self-adaptation cooling system |
| CN115450967A (en) * | 2022-09-09 | 2022-12-09 | 奇瑞汽车股份有限公司 | Hydraulic system for hybrid transmission and automobile |
| WO2024051798A1 (en) * | 2022-09-09 | 2024-03-14 | 奇瑞汽车股份有限公司 | Hydraulic system for hybrid gearbox and automobile |
-
2020
- 2020-09-07 CN CN202021936844.4U patent/CN213088564U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357352A (en) * | 2021-06-18 | 2021-09-07 | 中国第一汽车股份有限公司 | Cooling control valve, control method, dual-clutch transmission cooling system and vehicle |
| CN113357352B (en) * | 2021-06-18 | 2023-02-21 | 中国第一汽车股份有限公司 | Cooling control valve, control method, dual-clutch transmission cooling system and vehicle |
| CN114024410A (en) * | 2022-01-05 | 2022-02-08 | 苏州英磁新能源科技有限公司 | Motor self-adaptation cooling system |
| CN115450967A (en) * | 2022-09-09 | 2022-12-09 | 奇瑞汽车股份有限公司 | Hydraulic system for hybrid transmission and automobile |
| WO2024051798A1 (en) * | 2022-09-09 | 2024-03-14 | 奇瑞汽车股份有限公司 | Hydraulic system for hybrid gearbox and automobile |
| CN115450967B (en) * | 2022-09-09 | 2024-03-26 | 奇瑞汽车股份有限公司 | Hydraulic system for hybrid gearbox and automobile |
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