Partition structure in single-inlet double-outlet gearbox suction filter

Abstract

The utility model discloses a partition structure in a single-inlet double-outlet type gearbox suction filter, the gearbox suction filter comprises a shell, a filter layer assembly is arranged in the shell, an oil inlet cavity is enclosed by the filter layer assembly and the shell below the filter layer assembly, and the oil inlet cavity is communicated with an oil inlet; an oil outlet cavity is defined by the filter layer assembly and the shell above the filter layer assembly, the oil outlet cavity is communicated with a mechanical pump oil outlet and an electronic pump oil outlet, a partition structure is arranged in the oil outlet cavity and divides the oil outlet cavity into the mechanical pump oil outlet cavity and the 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 snatching phenomenon is greatly weakened, the damage of the oil snatching phenomenon of the double pumps to moving parts in the electronic pump and the gearbox is greatly reduced, so that the system works more stably, the performance of the gearbox is guaranteed, 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 the partitioned structure within the single-inlet, dual-outlet transmission filter of this invention, characterized by its relatively simple structure and low cost, which can alleviate the oil grabbing phenomenon but cannot eliminate it. The other is the partitioned structure within the dual-inlet, dual-outlet transmission filter, characterized by its relatively complex structure and relatively high cost, but which can eliminate the oil grabbing phenomenon.

[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 first type, namely, a partitioned structure within a single-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 single-inlet, dual-outlet transmission filter.

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

[0009] 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.

[0010] The filter layer assembly includes an overall square-ring-shaped enclosure frame, within which a filter layer for filtering lubricating oil is provided;

[0011] The separation structure includes a partition plate disposed on the filter layer assembly. The partition plate is fixedly connected to the enclosure frame and located in the middle of the width direction of the enclosure frame. The partition plate is connected to the filter layer downwards and extends upwards out of the enclosure frame.

[0012] The separation structure also includes a separation groove disposed on the upper housing, the separation groove opening downward and facing the separation plate, the separation plate being inserted upward into the separation groove; the separation plate and the separation groove divide the oil outlet chamber into the mechanical pump oil outlet chamber and the electronic pump oil outlet chamber.

[0013] This utility model has the following advantages:

[0014] This invention divides the oil outlet chamber into a mechanical pump outlet chamber and an electronic pump outlet chamber. When the mechanical pump and the electronic pump work simultaneously, the negative pressure generated by the mechanical pump acts on the mechanical pump outlet chamber but not on the electronic pump outlet chamber, and the negative pressure generated by the electronic pump acts on the electronic pump outlet chamber but not on the mechanical pump outlet chamber. Therefore, compared with the prior art (where the oil outlet chamber is not separated for the mechanical pump and the electronic pump), the oil grabbing phenomenon is greatly reduced, the damage caused by the dual-pump oil grabbing phenomenon to the electronic pump and the moving parts inside the transmission is greatly reduced, the system works more stably, the transmission performance is guaranteed (such as ensuring the smoothness and response speed of the shifting process), and the service life of the electronic pump and the transmission is effectively extended.

[0015] 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 partition structure. 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

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 3 yes Figure 1 AA sectional view.

[0019] Figure 4 yes Figure 1 CC section view.

[0020] Figure 5 This is an exploded structural diagram of the present invention after removing the protruding part of the mechanical pump oil outlet.

[0021] Figure 6 yes Figure 5 A schematic diagram of the upper and middle covers, viewed from the lower side to the upper side. Detailed Implementation

[0022] like Figures 1 to 6 As shown, this utility model provides a partitioned structure within a single-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 1, which is connected to an oil inlet 2. The filter layer assembly and the housing above it form an oil outlet chamber, which is connected to a mechanical pump outlet 3 and an electronic pump outlet 4. The oil outlet chamber is provided with a partition structure, dividing it into a mechanical pump outlet chamber 5 and an electronic pump outlet chamber 6. The mechanical pump outlet chamber 5 is connected to the mechanical pump outlet 3, and the electronic pump outlet chamber 6 is connected to the electronic pump outlet 4.

[0023] This invention divides the oil outlet chamber into a mechanical pump oil outlet chamber 5 and an electronic pump oil outlet chamber 6. When the mechanical pump and the electronic pump work simultaneously, the negative pressure generated by the mechanical pump acts on the mechanical pump oil outlet chamber 5 but cannot act on the electronic pump oil outlet chamber 6, and the negative pressure generated by the electronic pump acts on the electronic pump oil outlet chamber 6 but cannot act on the mechanical pump oil outlet chamber 5. Therefore, compared with the prior art (where the oil outlet chamber is not divided for mechanical pumps and electronic pumps), the oil grabbing phenomenon is greatly reduced, and the damage of the dual-pump oil grabbing phenomenon to the electronic pump and the moving parts inside the transmission is greatly reduced, making the system work more stably and ensuring the performance of the transmission (such as ensuring the smoothness and response speed of the shifting process).

[0024] The housing of the gearbox filter includes an upper housing 7 and a lower housing 8. The filter layer assembly is located between the upper housing 7 and the lower housing 8. The filter layer assembly and the lower housing 8 form the oil inlet chamber 1, and the filter layer assembly and the upper housing 7 form the oil outlet chamber.

[0025] The housing consists of an upper housing 7 and a lower housing 8, which facilitates manufacturing and assembly and is also the common structure for current gearbox filter filters.

[0026] The filter assembly includes an overall square-ring-shaped enclosure frame 9, within which a filter layer 10 for filtering lubricating oil is disposed. The filter layer 10 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.

[0027] The separation structure includes a partition plate 11 disposed on the filter layer assembly. The partition plate 11 is fixedly connected to the enclosure frame 9 and located in the middle of the width direction of the enclosure frame 9. The partition plate 11 is connected downward to the filter layer 10 and extends upward to the enclosure frame 9.

[0028] The separation structure also includes a separation groove 12 disposed on the upper housing 7. The separation groove 12 opens downward and faces the separation plate 11. The separation plate 11 is inserted upward into the separation groove 12. The separation plate 11 and the separation groove 12 divide the oil outlet chamber into the mechanical pump oil outlet chamber 5 and the electronic pump oil outlet chamber 6.

[0029] The partition plate 11 and the partition groove 12 are sealed, including but not limited to applying glue, sealing gaskets or welding.

[0030] In use, this invention is installed inside the vehicle's transmission. The oil inlet is connected to the lubricating oil at the bottom of the transmission. The mechanical pump outlet 3 is connected to the mechanical pump inlet via a pipeline, and the electronic pump outlet 4 is connected to the electronic pump inlet. When both the mechanical and electronic pumps operate simultaneously, the negative pressure generated by the two pumps does not act on the same outlet chamber, but rather on the mechanical pump outlet chamber 5 and the electronic pump outlet chamber 6 respectively. Although the negative pressure acts on the same inlet chamber 1 through the two outlet chambers, this effect is significantly reduced compared to the prior art where oil is directly skimmed from the inlet chamber 1, as it is separated by the outlet chambers and the filter assembly, thus ensuring the normal operation of the system.

[0031] 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 single-inlet, dual-outlet transmission filter, the transmission filter comprising a housing, a filter layer assembly within the housing, the filter layer assembly and the housing below forming an oil inlet chamber, the oil inlet chamber being connected to an oil inlet; 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 outlet chamber is equipped with a 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 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 single-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 single-inlet, dual-outlet 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 separation structure includes a partition plate disposed on the filter layer assembly. The partition plate is fixedly connected to the enclosure frame and located in the middle of the width direction of the enclosure frame. The partition plate is connected to the filter layer downwards and extends upwards out of the enclosure frame. The separation structure also includes a separation groove disposed on the upper housing, the separation groove opening downward and facing the separation plate, the separation plate being inserted upward into the separation groove; the separation plate and the separation groove divide the oil outlet chamber into the mechanical pump oil outlet chamber and the electronic pump oil outlet chamber.

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