Partition structure in double-inlet and double-outlet type gearbox suction filter

Abstract

The utility model discloses a partition structure in a double-inlet double-outlet type gearbox suction filter, which comprises a shell, a filter layer component is arranged in the shell, an oil inlet cavity is enclosed by the filter layer component and the shell below the filter layer component, an oil outlet cavity is enclosed by the filter layer component and the shell above the filter layer component, and the oil outlet cavity is communicated with a mechanical pump oil outlet and an electronic pump oil outlet. A lower partition structure is arranged in the oil inlet cavity and divides the oil inlet cavity into a mechanical pump oil inlet cavity and an electronic pump oil inlet cavity, the mechanical pump oil inlet cavity is connected with a mechanical pump oil inlet, and the electronic pump oil inlet cavity is connected with an electronic pump oil inlet. An upper partition structure is arranged in the oil outlet cavity and divides the oil outlet cavity into a mechanical pump oil outlet cavity and an electronic pump oil outlet cavity, the mechanical pump oil outlet cavity is communicated with the mechanical pump oil outlet, and the electronic pump oil outlet cavity is communicated with the electronic pump oil outlet. According to the utility model, the oil grabbing phenomenon is completely eradicated, the damage of the double-pump oil grabbing phenomenon to the electronic pump and moving parts in the gearbox is avoided, the system works more stably, the performance of the gearbox is improved, and the service lives of the electronic pump and the gearbox are effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive filter technology, and in particular to the structure of a transmission filter. Background Technology

[0002] To provide smoother power delivery, lower noise levels, and better fuel economy, high-end vehicles typically feature advanced transmission systems. These systems require both electronic and mechanical pumps to work together to meet lubrication and cooling needs under different operating conditions. The combined operation of electronic and mechanical pumps provides a more reliable fluid supply, ensuring the transmission functions properly under various conditions, including aggressive driving. Furthermore, some new energy vehicles also utilize a combination of electronic and mechanical pumps in their transmission systems. The electronic pump provides necessary lubrication and cooling during initial vehicle startup or low-speed driving, while the mechanical pump functions effectively during high-speed driving or when power output is high.

[0003] Under certain operating conditions, such as when a vehicle starts, accelerates, or climbs a hill, the transmission requires higher oil pressure and flow to meet the needs of lubrication and power transmission. In these situations, the electronic pump and mechanical pump often work simultaneously to ensure an adequate supply of lubricating oil. In some advanced transmission systems, the coordinated work of the electronic and mechanical pumps enables more complex oil control strategies. For example, during gear shifts, the electronic pump can quickly adjust the oil pressure, while the mechanical pump provides basic oil pressure support, thereby improving the smoothness and responsiveness of gear shifts.

[0004] To supply oil to both the electric and mechanical pumps, the transmission filter (i.e., the transmission oil filter) needs two outlets: one to the electric pump and one to the mechanical pump. Existing transmission filters typically have a filter element within the housing, with an inlet and outlet chamber between the filter element and the housing. The inlet chamber connects to an inlet port on the housing, and the outlet chamber connects to two outlet ports on the housing. These outlet ports are connected to either the electric or mechanical pump via piping. When both pumps operate simultaneously, oil competition occurs, reducing system efficiency, increasing energy consumption, and increasing pump wear. This can lead to system fluctuations and affect overall vehicle performance. In particular, the electric pump (which typically has a lower flow rate than the mechanical pump) may not receive sufficient lubricating oil, resulting in inadequate lubrication, unstable oil pressure, and accelerated wear on friction components within the transmission. Ultimately, all of these factors affect the transmission's operating performance and lifespan. In addition, when the electronic pump operates alone, it may suck up the clean oil chamber on the mechanical pump side, causing air downstream of the mechanical pump to enter the electronic pump, resulting in cavitation, unstable oil pressure, insufficient lubrication, overheating, and noise; thus affecting the normal operation of the electronic pump.

[0005] To address the issue of oil grabbing by the dual pumps, the applicant designed two partitioned structures within the transmission filter. One is a partitioned structure within a single-inlet, dual-outlet transmission filter, characterized by its relatively simple structure and low cost, which can alleviate the oil grabbing phenomenon but cannot eliminate it entirely. The other is the partitioned structure within the dual-inlet, dual-outlet transmission filter of this invention, characterized by its relatively complex structure and relatively high cost, but which can essentially eliminate the oil grabbing phenomenon by the dual pumps.

[0006] The applicant's two designs offer two solutions with different costs and effects for OEMs (vehicle manufacturers) to choose from. This utility model is the second type, namely the partitioned structure within a dual-inlet, dual-outlet transmission filter. Utility Model Content

[0007] The purpose of this invention is to address the problem of oil grabbing by dual pumps by providing a partitioned structure within a dual-inlet, dual-outlet transmission filter, thus eliminating the problem of oil grabbing by dual pumps.

[0008] To achieve the above objectives, this utility model provides a partitioned structure within a dual-inlet, dual-outlet transmission filter. The transmission filter includes a housing, within which a filter layer assembly is provided. The filter layer assembly and the housing below it form an oil inlet chamber, and the filter layer assembly and the housing above it form an oil outlet chamber. The oil outlet chamber is connected to an oil outlet of a mechanical pump and an oil outlet of an electronic pump.

[0009] The oil inlet chamber is equipped with a lower partition structure, which divides the oil inlet chamber into a mechanical pump oil inlet chamber and an electronic pump oil inlet chamber. The mechanical pump oil inlet chamber is connected to a mechanical pump oil inlet, and the electronic pump oil inlet chamber is connected to an electronic pump oil inlet.

[0010] The oil outlet chamber is equipped with an upper partition structure, which divides the oil outlet chamber into a mechanical pump oil outlet chamber and an electronic pump oil outlet chamber. The mechanical pump oil outlet chamber is located directly above the mechanical pump oil inlet chamber, and the electronic pump oil outlet chamber is located directly above the electronic pump oil inlet chamber. The mechanical pump oil outlet chamber is connected to the mechanical pump oil outlet, and the electronic pump oil outlet chamber is connected to the electronic pump oil outlet.

[0011] The housing of the gearbox filter includes an upper housing and a lower housing, with a filter layer assembly located between the upper housing and the lower housing. The filter layer assembly and the lower housing form the oil inlet chamber, and the filter layer assembly and the upper housing form the oil outlet chamber.

[0012] The filter layer assembly includes an overall square-ring-shaped enclosure frame, within which a filter layer for filtering lubricating oil is provided;

[0013] The upper partition structure includes an upper partition plate that is connected upward to the filter layer assembly. The upper partition plate is fixedly connected to the enclosure frame and located in the middle of the width direction of the enclosure frame. The upper partition plate is connected downward to the filter layer and extends upward to the enclosure frame.

[0014] The upper partition structure also includes an upper partition groove disposed on the upper housing. The upper partition groove opens downward and faces the upper partition plate. The upper partition plate is inserted upward into the upper partition groove. The upper partition plate and the upper partition groove divide the oil outlet chamber into the mechanical pump oil outlet chamber and the electronic pump oil outlet chamber.

[0015] The lower partition structure includes a lower partition plate that is connected downward to the filter layer assembly. The lower partition plate is fixedly connected to the enclosure frame and located in the middle of the width direction of the enclosure frame. The lower partition plate is located directly below the upper partition plate, and the lower partition plate connects upward to the filter layer and extends downward to the enclosure frame.

[0016] The lower partition structure also includes a lower partition groove disposed on the lower housing. The lower partition groove opens upward and faces the lower partition plate, and the lower partition plate is inserted downward into the lower partition groove. The lower partition plate and the lower partition groove divide the oil inlet chamber into the mechanical pump oil inlet chamber and the electronic pump oil inlet chamber.

[0017] There is a height difference between the bottom end of the mechanical pump inlet and the bottom end of the electronic pump inlet, and there is a gap between the mechanical pump inlet and the electronic pump inlet.

[0018] This utility model has the following advantages:

[0019] This invention divides the oil outlet chamber into a mechanical pump oil outlet chamber and an electronic pump oil outlet chamber, and simultaneously divides the oil inlet chamber into a mechanical pump oil inlet chamber and an electronic pump oil inlet chamber. Thus, when the mechanical pump and electronic pump operate simultaneously, the negative pressure generated by the mechanical pump acts on the mechanical pump oil outlet chamber and the mechanical pump oil inlet chamber, but not on the electronic pump oil outlet chamber and the electronic pump oil inlet chamber; similarly, the negative pressure generated by the electronic pump acts on the electronic pump oil outlet chamber and the electronic pump oil inlet chamber, but not on the mechanical pump oil outlet chamber and the mechanical pump oil inlet chamber. Therefore, it differs from existing technologies (where the oil outlet chamber is not specifically designed for mechanical and electronic pumps). Compared to the design where the inlet chamber is not separated, this design can basically eliminate the phenomenon of oil grabbing between the two pumps. Compared to the applicant's other design (where the inlet chamber is not separated, only the outlet chamber is separated), it is more complex in structure (basically equivalent to integrating two suction filters into one unit) and has a relatively higher cost. However, it further improves the effect of preventing oil grabbing, avoids damage to the electronic pump and moving parts inside the transmission caused by the phenomenon of oil grabbing between the two pumps, makes the system work more stable, improves the performance of the transmission (such as improving the smoothness and response speed of the shifting process), and effectively extends the service life of the electronic pump and the transmission.

[0020] The housing consists of an upper housing and a lower housing, which facilitates manufacturing and assembly, and is also the common structure for current gearbox filter suction devices. The filter layer assembly has a simple structure, which is easy to cooperate with the upper and lower partition structures. The filtration area can be increased by using a corrugated filter element structure, thereby increasing the dirt holding capacity of the filter suction device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 yes Figure 1 CC section view.

[0023] Figure 3 yes Figure 1 BB cross-sectional view.

[0024] Figure 4 This is a three-dimensional structural diagram of the present invention.

[0025] Figure 5 This is an exploded structural diagram of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the upper shell, viewed from below.

[0027] Figure 7 This is a three-dimensional structural diagram of the lower shell, viewed from above.

[0028] Figure 8 This is a three-dimensional structural diagram of the filter layer assembly, viewed from above.

[0029] Figure 9 This is a three-dimensional structural diagram of the filter layer assembly, viewed from below. Detailed Implementation

[0030] like Figures 1 to 9 As shown, this utility model provides a partitioned structure in a dual-inlet, dual-outlet type gearbox filter. The gearbox filter includes a housing, and a filter layer assembly is provided inside the housing. The filter layer assembly and the housing below it form an oil inlet chamber, and the filter layer assembly and the housing above it form an oil outlet chamber. The oil outlet chamber is connected to a mechanical pump oil outlet 1 and an electronic pump oil outlet 2.

[0031] The oil inlet chamber is provided with a lower partition structure, which divides the oil inlet chamber into a mechanical pump oil inlet chamber 3 and an electronic pump oil inlet chamber 4. The mechanical pump oil inlet chamber 3 is connected to a mechanical pump oil inlet 5, and the electronic pump oil inlet chamber 4 is connected to an electronic pump oil inlet 6.

[0032] There is a height difference (they are not on the same horizontal plane) between the bottom end of the mechanical pump inlet 5 and the bottom end of the electronic pump inlet 6, and there is a gap between them. This gap can be designed to be as large as possible, provided that space and structure permit. The height difference and the gap reduce the probability that, in extreme cases, gas from the mechanical pump area enters the gearbox and then enters the electronic pump through the electronic pump inlet.

[0033] The oil outlet chamber is equipped with an upper partition structure, which divides the oil outlet chamber into a mechanical pump oil outlet chamber 7 and an electronic pump oil outlet chamber 8. The mechanical pump oil outlet chamber 7 is located directly above the mechanical pump oil inlet chamber 3, and the electronic pump oil outlet chamber 8 is located directly above the electronic pump oil inlet chamber 4. The mechanical pump oil outlet chamber 7 is connected to the mechanical pump oil outlet 1, and the electronic pump oil outlet chamber 8 is connected to the electronic pump oil outlet 2.

[0034] This invention divides the oil outlet chamber into a mechanical pump oil outlet chamber 7 and an electronic pump oil outlet chamber 8, and simultaneously divides the oil inlet chamber into a mechanical pump oil inlet chamber 3 and an electronic pump oil inlet chamber 4. Thus, when the mechanical pump and electronic pump operate simultaneously, the negative pressure generated by the mechanical pump acts on the mechanical pump oil outlet chamber 7 and the mechanical pump oil inlet chamber 3, but not on the electronic pump oil outlet chamber 8 and the electronic pump oil inlet chamber 4; similarly, the negative pressure generated by the electronic pump acts on the electronic pump oil outlet chamber 8 and the electronic pump oil inlet chamber 4, but not on the mechanical pump oil outlet chamber 7 and the mechanical pump oil inlet chamber 3. Therefore, it differs from existing technologies (where the oil outlet chamber lacks a needle). Compared to separating the mechanical pump and the electronic pump, this design can essentially eliminate the phenomenon of oil grabbing between the two pumps. Compared to the applicant's other design (the oil inlet chamber is not separated, only the oil outlet chamber is separated), it is more complex in structure (basically equivalent to integrating two suction filters into one unit) and has a relatively higher cost, but it further improves the effect of preventing oil grabbing, avoids damage to the electronic pump and moving parts inside the transmission caused by the phenomenon of oil grabbing between the two pumps, makes the system work more stable, improves the performance of the transmission (such as improving the smoothness and response speed of the shifting process), and effectively extends the service life of the electronic pump and the transmission.

[0035] The housing of the gearbox filter includes an upper housing 9 and a lower housing 10. The filter layer assembly is located between the upper housing 9 and the lower housing 10. The filter layer assembly and the lower housing 10 form the oil inlet chamber, and the filter layer assembly and the upper housing 9 form the oil outlet chamber.

[0036] The housing includes an upper housing 9 and a lower housing 10, which facilitates manufacturing and assembly and is also the common structure of current gearbox filter filters.

[0037] The filter assembly includes an overall square-ring-shaped enclosure frame 11, within which a filter layer 12 for filtering lubricating oil is disposed. The filter layer 12 preferably adopts a corrugated structure, which can effectively increase the filtration area of ​​the product and increase the dirt-holding capacity of the filter. The filter layer 10 can also adopt a single-layer plate filter paper or other structures. The area of ​​the filter layer 10 corresponding to the oil outlet chamber 6 of the electronic pump is smaller than the area of ​​the filter layer 10 corresponding to the oil outlet chamber 5 of the mechanical pump.

[0038] The upper partition structure includes an upper partition plate 13 connected upward to the filter layer assembly. The upper partition plate 13 is fixedly connected to the enclosure frame 11 and located in the middle of the width direction of the enclosure frame 11. The upper partition plate 13 is connected downward to the filter layer 12 and extends upward to the enclosure frame 11.

[0039] The upper partition structure also includes an upper partition groove 14 disposed on the upper housing 9. The upper partition groove 14 opens downward and faces the upper partition plate 13. The upper partition plate 13 is inserted upward into the upper partition groove 14. The upper partition plate 13 and the upper partition groove 14 divide the oil outlet chamber into the mechanical pump oil outlet chamber 7 and the electronic pump oil outlet chamber 8.

[0040] The lower partition structure includes a lower partition plate 15 connected downward to the filter layer assembly. The lower partition plate 15 is fixedly connected to the enclosure frame 11 and is located in the middle of the width direction of the enclosure frame 11. The lower partition plate 15 is located directly below the upper partition plate 13. The lower partition plate 15 is connected upward to the filter layer 12 and extends downward to the enclosure frame 11.

[0041] The lower partition structure also includes a lower partition groove 16 disposed on the lower housing 10. The lower partition groove 16 opens upward and faces the lower partition plate 15. The lower partition plate 15 is inserted downward into the lower partition groove 16. The lower partition plate 15 and the lower partition groove 16 divide the oil inlet chamber into the mechanical pump oil inlet chamber 3 and the electronic pump oil inlet chamber 4.

[0042] The upper partition plate 13 and the upper partition groove 14, as well as the lower partition plate 15 and the lower partition groove 16, are sealed by means including but not limited to applying glue, sealing gaskets, or welding.

[0043] In use, this utility model is installed in the gearbox of a motor vehicle. The mechanical pump inlet 5 and the electronic pump inlet 6 are spaced apart and are respectively connected to the lubricating oil at the bottom of the gearbox. The mechanical pump outlet 1 is connected to the inlet of the mechanical pump through a pipeline, and the electronic pump outlet 2 is connected to the inlet of the electronic pump.

[0044] When the mechanical pump and the electronic pump are working simultaneously, the negative pressure generated by the two pumps will not act on the same oil outlet chamber or the same oil inlet chamber. Instead, it will act on the mechanical pump oil outlet chamber 7 and the electronic pump oil outlet chamber 8 respectively. After passing through the filter layer assembly, it will act on the mechanical pump oil inlet chamber 3 and the electronic pump oil inlet chamber 4 respectively. The phenomenon of oil grabbing is basically eliminated, and the normal operation of the system is more reliably guaranteed.

[0045] The above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the utility model without departing from the spirit and scope of the utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A partitioned structure within a dual-inlet, dual-outlet transmission filter, the transmission filter comprising a housing, a filter layer assembly disposed within the housing, the filter layer assembly and the housing below forming an oil inlet chamber, the filter layer assembly and the housing above forming an oil outlet chamber, the oil outlet chamber being connected to a mechanical pump outlet and an electronic pump outlet, characterized in that: The oil inlet chamber is equipped with a lower partition structure, which divides the oil inlet chamber into a mechanical pump oil inlet chamber and an electronic pump oil inlet chamber. The mechanical pump oil inlet chamber is connected to a mechanical pump oil inlet, and the electronic pump oil inlet chamber is connected to an electronic pump oil inlet. The oil outlet chamber is equipped with an upper partition structure, which divides the oil outlet chamber into a mechanical pump oil outlet chamber and an electronic pump oil outlet chamber. The mechanical pump oil outlet chamber is located directly above the mechanical pump oil inlet chamber, and the electronic pump oil outlet chamber is located directly above the electronic pump oil inlet chamber. The mechanical pump oil outlet chamber is connected to the mechanical pump oil outlet, and the electronic pump oil outlet chamber is connected to the electronic pump oil outlet.

2. The partitioned structure within the dual-inlet, dual-outlet type gearbox filter according to claim 1, characterized in that: The housing of the gearbox filter includes an upper housing and a lower housing, with a filter layer assembly located between the upper housing and the lower housing. The filter layer assembly and the lower housing form the oil inlet chamber, and the filter layer assembly and the upper housing form the oil outlet chamber.

3. The partitioned structure within the dual-inlet, dual-outlet type gearbox filter according to claim 2, characterized in that: The filter layer assembly includes an overall square-ring-shaped enclosure frame, within which a filter layer for filtering lubricating oil is provided; The upper partition structure includes an upper partition plate that is connected upward to the filter layer assembly. The upper partition plate is fixedly connected to the enclosure frame and located in the middle of the width direction of the enclosure frame. The upper partition plate is connected downward to the filter layer and extends upward to the enclosure frame. The upper partition structure also includes an upper partition groove disposed on the upper housing. The upper partition groove opens downward and faces the upper partition plate. The upper partition plate is inserted upward into the upper partition groove. The upper partition plate and the upper partition groove divide the oil outlet chamber into the mechanical pump oil outlet chamber and the electronic pump oil outlet chamber.

4. The partitioned structure within the dual-inlet, dual-outlet type gearbox filter according to claim 3, characterized in that: The lower partition structure includes a lower partition plate that is connected downward to the filter layer assembly. The lower partition plate is fixedly connected to the enclosure frame and located in the middle of the width direction of the enclosure frame. The lower partition plate is located directly below the upper partition plate, and the lower partition plate connects upward to the filter layer and extends downward to the enclosure frame. The lower partition structure also includes a lower partition groove disposed on the lower housing. The lower partition groove opens upward and faces the lower partition plate, and the lower partition plate is inserted downward into the lower partition groove. The lower partition plate and the lower partition groove divide the oil inlet chamber into the mechanical pump oil inlet chamber and the electronic pump oil inlet chamber.

5. The partitioned structure within the dual-inlet, dual-outlet type gearbox filter according to claim 4, characterized in that: There is a height difference between the bottom end of the mechanical pump inlet and the bottom end of the electronic pump inlet, and there is a gap between the mechanical pump inlet and the electronic pump inlet.

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