CN113738858A

CN113738858A - Wet-type double-clutch transmission and automobile

Info

Publication number: CN113738858A
Application number: CN202110928089.8A
Authority: CN
Inventors: 董立伟; 张磊; 徐斌; 谢衡南; 文新海; 李王英; 晏敏
Original assignee: Magna PT Powertrain Jiangxi Co Ltd
Current assignee: Magna PT Powertrain Jiangxi Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-12-03
Anticipated expiration: 2041-08-13
Also published as: CN113738858B

Abstract

The invention provides a wet type dual-clutch transmission and an automobile. During the use, can input the upper strata fluid of first oil pocket to the second cavity in to under clutch moving's stirring, can splash lubricating oil to the collection oil structure of second cavity on, and can input the upper strata fluid of first oil pocket to the second oil pocket in all the time through collection oil structure, solved the empty problem of inhaling of wet-type double-clutch transmission, shortened development cycle, reduced experiment, human cost.

Description

Wet-type double-clutch transmission and automobile

Technical Field

The invention relates to the technical field of transmissions, in particular to a wet type dual-clutch transmission and an automobile.

Background

With the progress of science and technology and the rapid development of productivity, automobiles have become popular in the lives of people and great convenience is brought to the lives of people.

Among them, the transmission is one of important parts of an automobile, and is a mechanism for changing the rotation speed and torque from an engine. In particular, the wet dual clutch transmission is popular among customers because of its excellent adjusting ability, excellent hot-melt property, and capability of transmitting a relatively large torque, and realizing fast and smooth shifting operation without intermediate conversion. Meanwhile, lubricating oil of the wet dual-clutch transmission is used for lubricating and cooling the clutch and each rotating part and also used as a working medium of a hydraulic system of the clutch, so that the requirements on oil products are different.

However, in the existing wet-type dual-clutch transmission, lubricating oil is generally filled into a gear cavity, a large amount of impurities are easily generated at the bottom of the gear cavity, the cleanliness is poor, a suction filter of a hydraulic system is placed at the bottom of a shell, and in order to meet the requirements of the hydraulic system of the clutch, a finer filter screen is generally adopted, so that the structure of the transmission is more complex, the flow resistance of the lubricating oil is increased, the load of a motor is increased, and the transmission efficiency and the control precision are influenced. In addition, as a plurality of suction filters of the hydraulic system at the bottom of the wet type dual-clutch transmission occupy more transverse and longitudinal sizes, in the running process of the automobile, in order to eliminate the suction risk of the hydraulic system, the wet type dual-clutch transmission usually needs to carry out a multi-wheel design-suction test verification process before leaving the factory, so that the development period is long, the test cost is high, the labor cost is high, and the production cost is increased.

Disclosure of Invention

Based on this, the invention aims to provide a wet type dual-clutch transmission and an automobile, so as to solve the problem that the wet type dual-clutch transmission in the prior art usually needs to carry out a multi-wheel design-vacuum test verification process before leaving a factory, so that the development period is long, the test cost is high, the labor cost is high, and the production cost is increased.

The embodiment of the invention provides a wet type dual-clutch transmission, which comprises a transmission shell, wherein one side of the transmission shell is provided with a first cavity for mounting a gear, the other side of the transmission shell is provided with a second cavity for mounting a clutch, a first rib extends out of the inner wall of the first cavity towards the outer side, the first rib separates a first oil cavity and a second oil cavity in the first cavity, the first oil cavity is communicated with the second cavity, the inner wall of the second cavity is provided with an oil collecting structure, and the oil collecting structure is communicated with the second oil cavity.

The invention has the beneficial effects that: the first rib extends outwards from the inner wall of the first cavity and separates a first oil cavity and a second oil cavity in the first cavity, wherein the first oil cavity is communicated with the second cavity, and an oil collecting structure is arranged on the inner wall of the second cavity and is communicated with the second oil cavity. Before the use, lubricating oil is injected into the first oil cavity and the second oil cavity simultaneously, in the actual use process, the upper layer oil in the first oil cavity can be input into the second oil cavity at all times, the lubricating oil can be splashed onto an oil collecting structure of the second oil cavity under the stirring of the running of the clutch, and the oil collecting structure is communicated with the second oil cavity, so that the upper layer oil in the first oil cavity can be input into the second oil cavity all the time, further, the second oil cavity is ensured to have sufficient oil all the time, the problem of air suction of the wet type dual clutch transmission is solved, the multi-wheel design-air suction test verification is not needed, the development period is shortened, the test and labor cost is reduced, the requirement of high cleanliness of the wet type dual clutch transmission is met, the hydraulic component can be simplified, the hydraulic resistance loss is reduced, and the hydraulic efficiency and the control precision are improved, and the structure is simple, and the production cost is reduced.

Preferably, at least one first through hole is formed in the inner wall of the first oil chamber, the at least one first through hole is arranged close to the middle of the first oil chamber, and the first oil chamber is communicated with the second chamber through the first through hole.

Preferably, a clutch cooling hydraulic system is arranged in the first oil cavity and is arranged at the bottom of the first oil cavity.

Preferably, the area of the first oil chamber is larger than the area of the second oil chamber.

Preferably, the oil collecting structure comprises a second rib vertically extending from the inner wall of the second chamber to the outside, and a second through hole formed in the inner wall of the second chamber, and the second through hole is formed in the end of the second rib.

Preferably, the second ribs are arranged close to the side wall of the second cavity in an inclined manner, two ends of each second rib are connected with the side wall of the second cavity and form an oil collecting cavity in the second cavity in an enclosed manner, and the second through holes are formed in the oil collecting cavity.

Preferably, the second through hole is formed in one end, close to the center of the second cavity, of the second rib, and the oil collecting cavity is communicated with the second oil cavity through the second through hole.

Preferably, a third rib and a baffle are arranged on the inner wall of the second oil cavity, one end of the third rib is connected with the first rib, the other end of the third rib is connected with one end of the baffle, the other end of the baffle is connected with the side wall of the second oil cavity, and the second through hole is surrounded by the third rib and the baffle in the second oil cavity.

Preferably, a clutch execution hydraulic system suction filter and a hydraulic motor are arranged in the second oil cavity, and the clutch execution hydraulic system suction filter and the hydraulic motor are both arranged at the bottom of the second oil cavity.

Embodiments of the present invention also provide an automobile including the above-described wet dual clutch transmission.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic illustration of a transmission housing in a wet dual clutch transmission according to a first embodiment of the present invention from a first perspective;

fig. 2 is a schematic structural diagram of a transmission housing in a wet dual clutch transmission according to a first embodiment of the present invention from a second perspective.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to fig. 2, a wet dual clutch transmission according to a first embodiment of the present invention is mainly shown and includes a transmission housing 10.

Specifically, in the present embodiment, the wet dual clutch transmission includes a transmission housing 10, a first chamber 11 for mounting a gear is disposed on one side of the transmission housing 10, a second chamber 12 for mounting a clutch is correspondingly disposed on the other side of the transmission housing, a first rib 111 extends outwards from an inner wall of the first chamber 11, the first rib 111 separates a first oil chamber 112 and a second oil chamber 113 in the first chamber 11, the first oil chamber 112 is communicated with the second chamber 12, an oil collecting structure 20 is disposed on an inner wall of the second chamber 12, and the oil collecting structure 20 is communicated with the second oil chamber 113.

In the present embodiment, as shown in fig. 1 to fig. 2, it should be noted that the first chamber 11 is a gear chamber for mounting a gear, and the second chamber 12 is a clutch chamber for mounting a clutch, specifically, in order to solve the problem of air suction of the wet dual clutch transmission and improve the cleanliness of the wet dual clutch transmission, a first rib 111 is disposed in the first chamber 11, the first rib 111 is formed by vertically extending an inner wall of the first chamber 11 to an outer side, and the first rib 111 is used for dividing the first chamber 11 into a first oil chamber 112 and a second oil chamber 113, and in the present embodiment, an area of the first oil chamber 112 is larger than an area of the second oil chamber 113, so as to lubricate the gear in the first chamber 11.

In the present embodiment, as shown in fig. 1, it is to be noted that, in order to facilitate the communication between the first oil chamber 112 and the second chamber 12, at least one first through hole 1121 is formed on an inner wall of the first oil chamber 112, and the at least one first through hole 1121 is disposed near a middle portion of the first oil chamber 112, so that when in use, the first oil chamber 112 is communicated with the second chamber 12 through the first through hole 1121. In this embodiment, it is obvious that the first through holes 1121 are provided in two, and both of the first through holes 1121 are circular through holes. In practice, the two first through holes 1121 are disposed near the middle of the second oil chamber 112, so that the upper oil in the first oil chamber 112 can flow into the second chamber 12 all the time, and the cleanliness of the oil input into the second chamber 12 is improved.

In addition, as shown in fig. 1, it should be noted that a clutch cooling hydraulic system 30 (a specific structure is not shown in fig. 1) is further disposed in the first oil chamber 112, specifically, the clutch cooling hydraulic system 30 is disposed at the bottom of the first oil chamber 112, and the clutch cooling hydraulic system 30 is a common device for those skilled in the art.

Further, in the present embodiment, as shown in fig. 2, it should be noted that when the upper oil of the first oil chamber 112 is input into the second chamber 12, the upper oil is splashed onto the side wall of the second chamber 12 because the clutch rotates rapidly and stirs the upper oil during operation. Therefore, in order to collect the upper oil splashed during the operation of the clutch, an oil collecting structure 20 is disposed on the inner wall of the second chamber 12, specifically, as shown in fig. 2, the oil collecting structure 20 includes a second rib 21 vertically extending from the inner wall of the second chamber 12 to the outside, and a second through hole 22 opened on the inner wall of the second chamber 12, and the second through hole 22 is disposed at an end of the second rib 21.

Specifically, as shown in fig. 2, it should be noted that, for convenience of implementation, the second ribs 21 are disposed to be inclined near the side wall of the second chamber 12, and both ends of the second ribs 21 are connected to the side wall of the second chamber 12 and enclose an oil collecting cavity 23 in the second chamber 12, and in implementation, the second through holes 22 are opened in the oil collecting cavity 23. Further, a second through hole 22 is formed at one end of the second rib 21 close to the center of the second chamber 12, and during actual use, the oil collecting chamber 23 is communicated with the second oil chamber 113 through the second through hole 22. When the clutch works, the input upper layer oil can be splashed into the oil collecting cavity 23 by the clutch, an oil pool is formed in the oil collecting cavity 23, and finally the upper layer oil in the oil collecting cavity 23 flows into the second oil cavity 113 through the second through hole 22 so as to supplement the oil to the second oil cavity 113.

In this embodiment, as shown in fig. 1, in order to smoothly flow the upper oil collected in the second chamber 12 into the second oil chamber 113, a third rib 1131 and a baffle 1132 are provided on an inner wall of the second oil chamber 113, in implementation, one end of the third rib 1131 is connected to the first rib 111, the other end of the third rib 1131 is connected to one end of the baffle 1132, and the other end of the baffle 1132 is connected to a side wall of the second oil chamber 113, so that the second through hole 22 can be effectively enclosed in the second oil chamber 113 by the third rib 1131 and the baffle 1132.

Further, in the present embodiment, a clutch actuator hydraulic system suction filter 40 (a specific structure is not shown in fig. 1) and a hydraulic motor 50 are further provided in the second oil chamber 113, and when the clutch actuator hydraulic system suction filter 40 and the hydraulic motor 50 are installed, both are provided at the bottom of the second oil chamber 113. It should be noted that the clutch actuator hydraulic system suction filter 40 and the hydraulic motor 50 are common devices for those skilled in the art.

In specific implementation, the first rib 111 extends outwards from the inner wall of the first chamber 11, and the first rib 111 separates a first oil chamber 112 and a second oil chamber 113 in the first chamber 11, wherein the first oil chamber 112 is communicated with the second chamber 12, and an oil collecting structure 20 is arranged on the inner wall of the second chamber 12, and the oil collecting structure 20 is communicated with the second oil chamber 113. Before use, lubricating oil is injected into the first oil chamber 112 and the second oil chamber 113 simultaneously, in the actual use process, the upper layer oil of the first oil chamber 112 can be input into the second chamber 12 at first and last, under the stirring of the operation of the clutch, the lubricating oil can be splashed onto the oil collecting structure 20 of the second chamber 12, and the oil collecting structure 20 is communicated with the second oil chamber 113, so that the upper layer oil of the first oil chamber 112 can be input into the second oil chamber 113 all the time, further, the second oil chamber 113 is ensured to have sufficient oil all the time, further, the air suction problem of the wet type double clutch transmission is solved, multi-wheel design-air suction test verification is not needed, the development period is shortened, the test and labor cost is reduced, the requirement of high cleanliness of the wet type double clutch transmission is met, further, hydraulic parts can be simplified, the hydraulic resistance loss is reduced, the hydraulic efficiency and the control precision are improved, and the structure is simple, and the production cost is reduced.

It should be noted that the above implementation process is only for illustrating the applicability of the present application, but this does not represent that the dual wet clutch transmission of the present application has only the above implementation flow, and on the contrary, the dual wet clutch transmission of the present application can be incorporated into the feasible embodiments of the present application as long as the dual wet clutch transmission of the present application can be implemented.

A second embodiment of the present invention provides an automotive vehicle, when embodied, including the wet dual clutch transmission provided by the first embodiment described above.

In summary, in the wet dual-clutch transmission and the automobile in the embodiments of the invention, the upper layer oil in the first oil chamber 112 can be always input into the second oil chamber 113, so that on one hand, sufficient oil is always in the second oil chamber 113, on the other hand, the requirement of high cleanliness of the wet dual-clutch transmission is met, and meanwhile, the problem of air suction of the wet dual-clutch transmission is solved, multi-wheel design-air suction test verification is not needed, the development cycle is shortened, the test and labor cost is reduced, so that hydraulic parts can be simplified, hydraulic resistance loss is reduced, the hydraulic efficiency and control precision are improved, the structure is simple, and the production cost is reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A wet type dual clutch transmission comprises a transmission shell, wherein one side of the transmission shell is provided with a first cavity used for installing a gear, and the other side of the transmission shell is provided with a second cavity used for installing a clutch, and the wet type dual clutch transmission is characterized in that: the inner wall of first cavity extends first rib towards the lateral extension, first rib is in divide first oil pocket and second oil pocket in the first cavity, first oil pocket with second cavity intercommunication, be equipped with the collection oil structure on the inner wall of second cavity, the collection oil structure with second oil pocket intercommunication.

2. The dual-wet-clutch transmission as claimed in claim 1, characterized in that: the inner wall of the first oil chamber is provided with at least one first through hole, the at least one first through hole is arranged close to the middle part of the first oil chamber, and the first oil chamber is communicated with the second chamber through the first through hole.

3. The dual-wet-clutch transmission as claimed in claim 2, characterized in that: and a clutch cooling hydraulic system is arranged in the first oil cavity and is arranged at the bottom of the first oil cavity.

4. The dual-wet-clutch transmission as claimed in claim 1, characterized in that: the area of the first oil chamber is larger than that of the second oil chamber.

5. The dual-wet-clutch transmission as claimed in claim 1, characterized in that: the oil collecting structure comprises a second rib and a second through hole, the second rib extends vertically from the inner wall of the second cavity to the outer side, the second through hole is formed in the inner wall of the second cavity, and the second through hole is formed in the end portion of the second rib.

6. The dual-wet-clutch transmission as claimed in claim 5, characterized in that: the second ribs are close to the side wall of the second cavity and are obliquely arranged, two ends of each second rib are connected with the side wall of the second cavity and form an oil collecting cavity in the second cavity in a surrounding mode, and the second through holes are formed in the oil collecting cavity.

7. The dual-wet-clutch transmission as claimed in claim 6, characterized in that: the second through hole is formed in one end, close to the center of the second cavity, of the second rib, and the oil collecting cavity is communicated with the second oil cavity through the second through hole.

8. The dual-wet-clutch transmission as claimed in claim 5, characterized in that: and a third rib and a baffle are arranged on the inner wall of the second oil cavity, one end of the third rib is connected with the first rib, the other end of the third rib is connected with one end of the baffle, the other end of the baffle is connected with the side wall of the second oil cavity, and the third rib and the baffle enclose the second through hole in the second oil cavity.

9. The dual-wet-clutch transmission as claimed in claim 1, characterized in that: and a clutch execution hydraulic system suction filter and a hydraulic motor are arranged in the second oil cavity, and the clutch execution hydraulic system suction filter and the hydraulic motor are both arranged at the bottom of the second oil cavity.

10. An automobile, characterized in that: comprising a dual wet clutch transmission according to any one of claims 1 to 9.