CN116104928A

CN116104928A - Oil passage control device, oil passage system and gearbox

Info

Publication number: CN116104928A
Application number: CN202211649793.0A
Authority: CN
Inventors: 张广瀚; 王成立; 黄友宾; 徐龙飞
Original assignee: Shengrui Transmission Co Ltd
Current assignee: Shengrui Transmission Co Ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-05-12

Abstract

The disclosure relates to the technical field of oil path control, in particular to an oil path control device, an oil path system and a gearbox. The oil passage control device includes: a switching valve, a control valve and a feedback valve; the switching valve comprises a valve shell, a valve core and a resetting piece, wherein the valve core is arranged in the valve shell in a sliding mode, the valve core is provided with an opening station and a closing station, and the first connecting hole is communicated with the second connecting hole in the opening station; in the closing station, the first connection hole and the second connection hole are disconnected. According to the oil way control device, through the arrangement of the control valve, lower oil pressure can be provided for the second oil cavity when the vehicle is in a low torque working condition, so that the switching valve is easier to close, the oil supplementing to the lubricating oil way can be effectively reduced at the moment, and the transmission efficiency of the gearbox is prevented from being influenced by the resistance generated by excessive lubricating oil when the power of the gearbox is low.

Description

Oil passage control device, oil passage system and gearbox

Technical Field

The disclosure relates to the technical field of oil path control, in particular to an oil path control device, an oil path system and a gearbox.

Background

An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine with the actual running speed of the wheels for optimum performance of the engine. The gearbox can generate different speed ratios between the engine and wheels in the running process of the automobile, so that transmission of different gear speeds is realized.

The manual gearbox mainly comprises gears and a rotating shaft, and the speed change and torque change are generated through different gear combinations; the automatic gearbox AT consists of a hydraulic torque converter, a planetary gear and a hydraulic control system, and the purposes of speed change and torque conversion are achieved through a hydraulic transmission and gear combination mode.

The automatic gearbox has the advantages of being comfortable to drive, capable of reducing fatigue of a driver and the like, and has become a development direction of modern car configuration. The automatic gearbox utilizes the planetary gear mechanism to change speed, can automatically change speed according to the degree of an accelerator pedal and the speed of the vehicle, and a driver only needs to control the speed of the vehicle by manipulating the accelerator pedal, so that the driver can pay attention to road traffic in a full-concentration manner and can not be cluttered by gear shifting.

The oil circuit system of the automatic gearbox comprises a main oil circuit, a lubricating oil circuit and other oil circuits, the current gearbox is provided with a lubricating constant pressure valve to connect the main oil circuit and the lubricating oil circuit, so that the lubricating oil circuit is guaranteed to be supplied in place, the lubricating constant pressure valve can always supply lubricating oil to the lubricating oil circuit by the maximum flow, when the vehicle is in a working condition of low torque and high rotating speed, the lubricating oil circuit can provide larger resistance for high rotating speed parts, and the transmission efficiency of the gearbox is greatly reduced.

Disclosure of Invention

In order to solve the technical problem, the present disclosure provides an oil path control device, an oil path system and a gearbox.

In a first aspect, the present disclosure provides an oil passage control device including: a switching valve, a control valve and a feedback valve;

the switching valve comprises a valve shell, a valve core and a resetting piece, wherein a first oil cavity is formed between a first end of the valve core and the inner wall of the valve shell, a second oil cavity is formed between a second end of the valve core and the inner wall of the valve shell, and a first connecting hole for connecting a main oil way, a second connecting hole for connecting a lubricating oil way, a third connecting hole communicated with the first oil cavity and a fourth connecting hole communicated with the second oil cavity are formed in the valve shell;

the valve core is arranged in the valve shell in a sliding way, the valve core is provided with an opening station and a closing station,

in the opening station, the first connecting hole is communicated with the second connecting hole;

in the closing station, the first connecting hole and the second connecting hole are disconnected;

the third connecting hole is communicated with the lubricating oil path through a feedback valve, and the first oil cavity is filled with oil and is used for driving the valve core to move from the opening station to the closing station; the fourth connecting hole is connected with the control valve, and the second oil cavity is filled with oil and used for driving the valve core to move from the closing station to the opening station;

one end of the reset piece is connected with the valve shell, the other end of the reset piece is connected with the valve core, and elastic force for driving the valve core to move from the closing station to the opening station is provided.

Optionally, the control valve is an electromagnetic valve.

Optionally, the control valve is electrically connected with a driving computer, and the output oil pressure of the control valve is positively correlated with the oil pressure of the main oil way.

Optionally, the reset piece is disposed in the second oil cavity.

Optionally, the reset piece is a cylindrical spring, and the reset piece and the valve core are coaxially arranged; the valve core or the valve shell is provided with a connecting column which is in plug-in fit with the reset piece.

Optionally, the oil circuit control device further comprises a pressure regulating valve, wherein the pressure regulating valve comprises a fifth connecting hole and a sixth connecting hole, the fifth connecting hole is communicated with the main oil circuit, and the sixth connecting hole is communicated with the first connecting hole;

the pressure regulating valve is provided with a first station and a second station;

at the first station, the fifth connecting hole is communicated with the sixth connecting hole;

in the second station, the fifth connecting hole is disconnected from the sixth connecting hole.

Optionally, the control valve is connected to the pressure regulating valve and is used for driving the pressure regulating valve to move from the first station to the second station.

Optionally, a filter screen is arranged between the sixth connecting hole and the first connecting hole.

In a second aspect, the present disclosure provides an oil passage system including an oil passage control device as described above.

In a third aspect, the present disclosure provides a gearbox comprising an oil circuit system as described above.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

according to the oil way control device, through the arrangement of the control valve, lower oil pressure can be provided for the second oil cavity when the vehicle is in a low torque working condition, so that the switching valve is easier to close, the oil supplementing of the lubricating oil way can be effectively reduced, and the transmission efficiency of the gearbox is prevented from being influenced by the resistance generated by excessive lubricating oil when the power of the gearbox is low; when the vehicle is in a high-torque high-power working condition, the second oil cavity of the control valve position provides higher oil pressure, so that the switching valve is ensured to be stable at an opening station, and at the moment, the main oil way can be ensured to carry out oil supplementing action on the lubricating oil way, so that the gearbox is ensured to be fully lubricated; the control valve can perform oil supplementing operation according to whether the actual control main oil way of the vehicle is the lubricating oil way or not, and the transmission efficiency of the gearbox can be remarkably improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an oil path control device according to an embodiment of the disclosure.

1, a switching valve; 11. a valve housing; 111. a first connection hole; 112. a second connection hole; 113. a third connection hole; 114. a fourth connection hole; 12. a valve core; 13. a reset member; 14. a connecting column; 2. a control valve; 3. a feedback valve; 41. a main oil path; 42. a lubrication oil path; 5. a pressure regulating valve; 51. a fifth connection hole; 52. a sixth connection hole; 6. and (5) a filter screen.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Based on this, this embodiment provides an oil circuit control device, an oil circuit system and a gearbox, through the setting of control valve, can provide lower oil pressure for the second oil pocket when the vehicle is in low torque condition to make the switching valve more easy to close, can effectively reduce the oil supplementing to the lubrication oil circuit at this moment, prevent the gearbox from being influenced its transmission efficiency by the resistance that too much lubricating oil produced when low power; when the vehicle is in a high-torque high-power working condition, the second oil cavity of the control valve position provides higher oil pressure, so that the switching valve is ensured to be stable at an opening station, and at the moment, the main oil way can be ensured to carry out oil supplementing action on the lubricating oil way, so that the gearbox is ensured to be fully lubricated; the control valve can perform oil supplementing operation according to whether the actual control main oil way of the vehicle is the lubricating oil way or not, and the transmission efficiency of the gearbox can be remarkably improved. The following is a detailed description of the present invention by way of specific examples:

referring to fig. 1, an oil path control device provided in this embodiment includes: a switching valve 1, a control valve 2 and a feedback valve 3; the switching valve 1 comprises a valve shell 11, a valve core 12 and a reset piece 13, wherein a first end of the valve core 12 and the inner wall of the valve shell 11 form a first oil cavity, a second end of the valve core 12 and the inner wall of the valve shell 11 form a second oil cavity, and a first connecting hole 111 for connecting a main oil way 41, a second connecting hole 112 for connecting a lubricating oil way 42, a third connecting hole 113 communicated with the first oil cavity and a fourth connecting hole 114 communicated with the second oil cavity are arranged on the valve shell 11; the valve core 12 is slidably arranged in the valve housing 11, the valve core 12 is provided with an opening station and a closing station, and the first connecting hole 111 is communicated with the second connecting hole 112 in the opening station; in the closing station, the first connection hole 111 and the second connection hole 112 are disconnected; the third connecting hole 113 is communicated with the lubricating oil path 42 through the feedback valve 3, and the first oil cavity is filled with oil and used for driving the valve core 12 to move from the opening station to the closing station; the fourth connecting hole 114 is connected with the control valve 2, and the second oil cavity is used for driving the valve core 12 to move from the closing station to the opening station; one end of the return member 13 is connected to the valve housing 11 and the other end is connected to the valve spool 12, and provides an elastic force that drives the valve spool 12 to move from the closing position toward the opening position.

When the lubricating oil way 42 reaches the set oil pressure, the feedback valve 3 is opened, the oil body of the lubricating oil way 42 flows to the first oil cavity, and the first oil cavity charges oil to drive the valve core 12 to move from the opening station to the closing station; when the torque of the transmission increases, the oil pressure supplied from the control valve 2 to the second oil chamber increases, and the valve element 12 is driven to move from the closed position to the open position, or the valve element 12 is maintained in the open position against the oil pressure in the first oil chamber.

The arrangement of the control valve 2 can provide lower oil pressure for the second oil cavity when the vehicle is in a low torque working condition, so that the switching valve 1 is easier to close, the oil supplementing of the lubricating oil path 42 can be effectively reduced, and the transmission efficiency of the gearbox is prevented from being influenced by the resistance generated by excessive lubricating oil when the power of the gearbox is low; when the vehicle is in a high-torque high-power working condition, the second oil cavity at the 2 position of the control valve provides higher oil pressure, so that the switching valve 1 is ensured to be stable at an opening station, and at the moment, the main oil way 41 can be ensured to carry out oil supplementing action on the lubricating oil way 42, so that the gearbox is ensured to be fully lubricated; the control valve 2 can perform the oil supplementing operation according to whether or not the actual control main oil passage 41 of the vehicle is the lubrication oil passage 42, and can significantly improve the transmission efficiency of the transmission.

In some embodiments, the control valve 2 is a solenoid valve; in a further embodiment, the control valve 2 is electrically connected with the driving computer, and the output oil pressure of the control valve 2 is positively correlated with the oil pressure of the main oil path 41; the control valve 2 is arranged to be an electromagnetic valve, the output oil pressure of the control valve 2 can be regulated in real time through monitoring the torque of the vehicle by a driving computer, and the control valve 2 is regulated to be in a proper state more accurately and rapidly.

In some embodiments, the return member 13 is disposed within the second oil chamber; this enables the return member 13 to be cooled and lubricated by the oil body in the second oil chamber.

In a further embodiment, the return element 13 is a cylindrical spring, the return element 13 being arranged coaxially with the valve core 12; the valve core 12 or the valve shell 11 is provided with a connecting column 14 which is in plug-in fit with the reset piece 13; it should be noted that, the outer diameter of the restoring member 13 may be matched with the diameter of the inner wall of the valve housing 11, and at the same time, the inner diameter of the restoring member 13 may also be matched with the diameter of the connecting post 14, so as to ensure the stability of the restoring member 13 on the valve housing 11 and the valve core 12.

In some embodiments, the oil path control device further includes a pressure regulating valve 5, the pressure regulating valve 5 including a fifth connection hole 51 and a sixth connection hole 52, the fifth connection hole 51 communicating with the main oil path 41, the sixth connection hole 52 communicating with the first connection hole 111; the pressure regulating valve 5 has a first station and a second station; in the first station, the fifth connecting hole 51 communicates with the sixth connecting hole 52; in the second station, the fifth connecting hole 51 is disconnected from the sixth connecting hole 52; by providing the pressure regulating valve 5, the main oil passage 41 and the lubrication oil passage 42 can be opened and closed under the control of the pressure regulating valve 5.

With continued reference to fig. 1, the control valve 2 is connected to the pressure regulating valve 5 and is configured to drive the pressure regulating valve 5 from the first station to the second station; it should be understood that the pressure regulating valve 5 and the switching valve 1 can be controlled to be opened and closed by the same control valve 2, so that the cost can be reduced and the layout can be optimized.

In some embodiments, a screen 6 is disposed between the sixth connection hole 52 and the first connection hole 111; the arrangement can ensure that the oil body entering the lubricating oil way 42 is cleaner, and prevent the problem that the oil body doped magazine in the lubricating oil way 42 permeates into the gaps of the parts, so that the parts are worn too fast and the service life is shortened.

The specific implementation manner and implementation principle are the same as those of the above embodiments, and the same or similar technical effects can be brought, which are not described in detail herein, and specific reference may be made to the description of the above embodiments of the oil path control device.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oil passage control device, characterized by comprising: a switching valve (1), a control valve (2) and a feedback valve (3);

the switching valve (1) comprises a valve shell (11), a valve core (12) and a resetting piece (13), wherein a first oil cavity is formed between a first end of the valve core (12) and the inner wall of the valve shell (11), a second oil cavity is formed between a second end of the valve core (12) and the inner wall of the valve shell (11), and a first connecting hole (111) for connecting a main oil channel (41), a second connecting hole (112) for connecting the lubricating oil channel (42), a third connecting hole (113) communicated with the first oil cavity and a fourth connecting hole (114) communicated with the second oil cavity are formed in the valve shell (11);

the valve core (12) is arranged in the valve housing (11) in a sliding way, the valve core (12) is provided with an opening station and a closing station,

-in the opening station, the first connection hole (111) communicates with the second connection hole (112);

-in the closing station, the first connection hole (111) and the second connection hole (112) are disconnected;

the third connecting hole (113) is communicated with the lubricating oil path (42) through a feedback valve (3), and the first oil cavity is filled with oil and used for driving the valve core (12) to move from the opening station to the closing station; the fourth connecting hole (114) is connected with the control valve (2), and the second oil cavity is used for driving the valve core (12) to move from the closing station to the opening station;

one end of the reset piece (13) is connected with the valve shell (11), the other end of the reset piece is connected with the valve core (12), and elastic force for driving the valve core (12) to move from the closing station to the opening station is provided.

2. The oil passage control device according to claim 1, characterized in that the control valve (2) is a solenoid valve.

3. The oil passage control device according to claim 2, characterized in that the control valve (2) is electrically connected to a traveling computer, and the output oil pressure of the control valve (2) is positively correlated with the oil pressure of the main oil passage (41).

4. The oil passage control device according to claim 1, characterized in that the return member (13) is provided in the second oil chamber.

5. The oil passage control device according to claim 4, characterized in that the return member (13) is a cylindrical spring, the return member (13) being disposed coaxially with the spool (12); the valve core (12) or the valve shell (11) is provided with a connecting column (14) which is in plug-in fit with the resetting piece (13).

6. The oil passage control device according to any one of claims 1 to 5, characterized by further comprising a pressure regulating valve (5), the pressure regulating valve (5) including a fifth connection hole (51) and a sixth connection hole (52), the fifth connection hole (51) communicating with a main oil passage (41), the sixth connection hole (52) communicating with the first connection hole (111);

the pressure regulating valve (5) is provided with a first station and a second station;

-at the first station, the fifth connecting hole (51) communicates with the sixth connecting hole (52);

in the second station, the fifth connecting hole (51) is disconnected from the sixth connecting hole (52).

7. The oil passage control device according to claim 6, characterized in that the control valve (2) is connected to the pressure regulating valve (5) and is adapted to drive the pressure regulating valve (5) from the first station to the second station.

8. The oil passage control device according to claim 6, characterized in that a strainer (6) is provided between the sixth connection hole (52) and the first connection hole (111).

9. An oil passage system including the oil passage control apparatus according to any one of claims 1 to 8.

10. A transmission comprising the oil circuit system of claim 9.