CN107575376B - Automatic transmission oil pump for vehicle - Google Patents
Automatic transmission oil pump for vehicle Download PDFInfo
- Publication number
- CN107575376B CN107575376B CN201711012537.XA CN201711012537A CN107575376B CN 107575376 B CN107575376 B CN 107575376B CN 201711012537 A CN201711012537 A CN 201711012537A CN 107575376 B CN107575376 B CN 107575376B
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- Prior art keywords
- oil pump
- clutch
- transmission
- input shaft
- rotor
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- 239000010718 automatic transmission oil Substances 0.000 title claims abstract description 13
- 239000003921 oil Substances 0.000 claims abstract description 102
- 230000005540 biological transmission Effects 0.000 claims abstract description 46
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
An automatic transmission oil pump for a vehicle belongs to the field of automatic transmissions, and is technically characterized in that: the clutch is arranged on the transmission input shaft and in front of the oil pump body, and the outer surface of the rear end of the clutch is rotationally connected with the front end of the oil pump body. The invention ensures that the transmission oil pump has the capability of supporting and positioning the clutch, changes the driving mode of the oil pump from the driving of the hydraulic torque converter to the driving of the engine input shaft, reduces the mechanical loss of torque caused by the hydraulic torque converter in the transmission process, simplifies the whole transmission structure and has more reasonable space arrangement.
Description
Technical Field
The invention relates to the field of automatic transmissions of automobiles, in particular to an automatic transmission oil pump for a vehicle.
Background
For an AT (automatic transmission), multiple gears are a relatively effective measure for achieving more efficient energy saving. Meanwhile, the AT gearbox is matched with a motor, so that mixed power is also a main flow direction. Compared with the traditional power vehicle, the performance requirements of the hybrid power vehicle on the transmission are naturally different, and the traditional AT oil pump must be innovated to meet the performance requirements of the hybrid transmission.
For an automatic transmission of an automobile, to realize automatic gear shifting, the mutual matching of all the actuating elements is required, and the meaning of an oil pump is to provide power for the actuating elements. The hybrid transmission eliminates the hydraulic torque converter due to the existence of the motor, and a clutch is added, so that the conventional oil pump cannot meet the requirements of the hybrid transmission.
Disclosure of Invention
The invention provides an automatic transmission oil pump for a vehicle, which can meet the requirement of a hybrid transmission with an increased clutch.
The invention relates to an automatic transmission oil pump for a vehicle, which adopts the following technical scheme: the novel transmission comprises an oil pump body, a transmission input shaft, an oil pump outer rotor, an oil pump inner rotor and a clutch, wherein the oil pump outer rotor and the oil pump inner rotor are positioned in the oil pump body, the oil pump outer rotor and the oil pump inner rotor are eccentrically arranged, the oil pump inner rotor is coaxially arranged on the transmission input shaft, the clutch is arranged on the transmission input shaft and positioned in front of the oil pump body, and the outer surface of the rear end of the clutch is rotationally connected with the front end of the oil pump body.
As a further improvement of the present invention, the rear end portion of the oil pump body is provided with a pump cover.
As a further improvement of the invention, the oil pump inner rotor is in spline connection with the transmission input shaft. The arrangement is convenient for realizing the tight and stable connection between the inner rotor of the oil pump and the input shaft of the transmission.
As a further development of the invention, the clutch is splined to the transmission input shaft. The arrangement is convenient for realizing the tight and stable connection of the clutch and the transmission input shaft.
As a further improvement of the invention, the outer surface of the inner rotor of the oil pump and the inner surface of the outer rotor of the oil pump are provided with meshing teeth which are meshed with each other, and an area formed between the two groups of meshing teeth is an oil duct. The arrangement realizes the meshing transmission connection of the inner rotor of the oil pump and the outer rotor of the oil pump, and simultaneously forms an oil way between the inner rotor of the oil pump and the outer rotor of the oil pump.
As a further development of the invention, the tooth profile of the tooth system is a cycloidal tooth profile.
The beneficial effects of the invention are as follows:
1. the transmission oil pump of the invention forms an inner-meshed rotor pump through the inner rotor of the oil pump and the outer rotor of the oil pump, so that the transmission oil pump has the advantages of large meshing contact ratio, stable transmission and good oil absorption condition;
2. the functions of oil absorption and oil pressing are realized through the volume change of a sealed working cavity formed by the inner rotor and the outer rotor of the oil pump, the pump body and the pump cover of the oil pump;
3. compared with the traditional driving mode, the transmission is more stable in transmission and higher in efficiency;
4. the rear end of the oil pump body is designed to be sleeved outside the front end of the clutch in a sleeve-like structure, and the front end of the oil pump body is connected with the rear end of the clutch through a bearing, so that the clutch is supported and fixed;
in general, the invention makes the structure of the transmission oil pump simpler and more compact, meets the requirements of pressure, lubrication and cooling of a clutch, a brake and the like in the transmission under a smaller volume, makes the transmission oil pump have the capability of providing support and positioning for the clutch, makes the driving mode of the transmission oil pump changed from the driving of the hydraulic torque converter to the driving of the transmission input shaft, reduces the mechanical loss of torque caused by the hydraulic torque converter in the transmission process, makes the whole transmission structure simpler, and has more reasonable space arrangement.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic illustration of an oil pump inner rotor engaged with an oil pump outer rotor;
fig. 3 is a perspective view of the present invention.
Detailed Description
Referring to fig. 1 and 3, the automatic transmission oil pump for a vehicle according to the present invention includes an oil pump body 9, a transmission input shaft 7, an oil pump outer rotor 11, an oil pump inner rotor 12, and a clutch 8, wherein the oil pump outer rotor 11 and the oil pump inner rotor 12 are positioned in the oil pump body 9, the oil pump outer rotor 11 and the oil pump inner rotor 12 are eccentrically arranged, the oil pump inner rotor 12 is coaxially arranged on the transmission input shaft 7, the clutch 8 is arranged on the transmission input shaft 7 and positioned in front of the oil pump body 9, and the rear end outer surface of the clutch 8 is rotatably connected with the front end of the oil pump body 9. The rear end of the oil pump body 9 is provided with a pump cover 13. The oil pump inner rotor 12 is in spline connection with the transmission input shaft 7. The clutch 8 is splined to the transmission input shaft 7. The clutch 8 is always connected to the motor and the transmission input shaft 7, and controls the working intervention of the engine.
Referring to fig. 2, the outer surface of the inner rotor 12 of the oil pump and the inner surface of the outer rotor 11 of the oil pump are provided with meshing teeth which are meshed with each other, the tooth shape of the meshing teeth is cycloidal tooth shape, the tooth number of the inner rotor of the oil pump is 9, the tooth number of the outer rotor of the oil pump is 10, the area formed between the two sets of meshing teeth is an oil passage, in fig. 2, 1a-5a form an oil inlet passage 1 of the oil pump, and 1b-5b form an oil outlet passage 2 of the oil pump.
The oil absorption and pressing process is as follows: the sealed working chambers 1a-5a shown in fig. 2 gradually increase along with the rotation of the gears, form partial vacuum and suck oil; 1b-5b, the sealed working cavity is gradually reduced, and the oil is extruded out, so that the functions of oil absorption and oil pressing are realized.
Referring to fig. 2, the transmission oil pump of the invention forms an inner-meshed rotor pump by the inner rotor and the outer rotor of the oil pump, and the tooth shapes of the inner rotor and the outer rotor of the oil pump are cycloidal tooth shapes, which have the advantages of simple structure, large meshing contact ratio, stable transmission and good oil absorption condition. The functions of oil absorption and oil pressing are realized through the volume change of a sealed working cavity formed by the inner rotor and the outer rotor of the oil pump, the pump body and the pump cover of the oil pump.
The working process comprises the following steps:
the motor and the engine drive the clutch 8, the clutch 8 drives the transmission input shaft 7 to rotate, the transmission input shaft 7 drives the oil pump inner rotor 12 through a spline, the oil pump inner rotor 12 drives the oil pump outer rotor 11 to rotate, the oil pump body 9 is fixed, and the clutch 8 is seated on the oil pump body 9 through the bearing 10.
Claims (6)
1. An automatic transmission oil pump for a vehicle, characterized in that: including oil pump body (9), derailleur input shaft (7), oil pump external rotor (11), oil pump internal rotor (12) and clutch (8), oil pump external rotor (11) and oil pump internal rotor (12) are in oil pump body (9), and oil pump external rotor (11) and oil pump internal rotor (12) eccentric settings, oil pump internal rotor (12) are coaxial locate on derailleur input shaft (7), clutch (8) are located on derailleur input shaft (7) and are in the place ahead of oil pump body (9), and the front end of oil pump body (9) is connected through the bearing with the rear end of clutch (8), and the rear end surface of clutch (8) is connected with the front end rotation of oil pump body (9).
2. An automatic transmission oil pump for a vehicle according to claim 1, wherein: the rear end part of the oil pump body (9) is provided with a pump cover (13).
3. An automatic transmission oil pump for a vehicle according to claim 1, wherein: the oil pump inner rotor (12) is in spline connection with the transmission input shaft (7).
4. An automatic transmission oil pump for a vehicle according to claim 1, wherein: the clutch (8) is in spline connection with the transmission input shaft (7).
5. An automatic transmission oil pump for a vehicle according to any one of claims 1 to 4, wherein: the outer surface of the inner rotor (12) of the oil pump and the inner surface of the outer rotor (11) of the oil pump are provided with meshing teeth which are meshed with each other, and an area formed between the two groups of meshing teeth is an oil duct.
6. An automatic transmission oil pump for a vehicle according to claim 5, wherein: the tooth shape of the meshing teeth is cycloidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711012537.XA CN107575376B (en) | 2017-10-25 | 2017-10-25 | Automatic transmission oil pump for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711012537.XA CN107575376B (en) | 2017-10-25 | 2017-10-25 | Automatic transmission oil pump for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107575376A CN107575376A (en) | 2018-01-12 |
| CN107575376B true CN107575376B (en) | 2024-03-22 |
Family
ID=61036964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711012537.XA Active CN107575376B (en) | 2017-10-25 | 2017-10-25 | Automatic transmission oil pump for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107575376B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303209B (en) * | 2020-10-30 | 2022-08-09 | 重庆长安汽车股份有限公司 | DCT transmission electronic oil pump arrangement structure and vehicle |
| CN114046350A (en) * | 2021-10-26 | 2022-02-15 | 一汽解放汽车有限公司 | Transmission structure of transmission |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201090432Y (en) * | 2007-09-26 | 2008-07-23 | 湖南江麓容大车辆传动有限责任公司 | Rotor oil pump |
| CN101626914A (en) * | 2007-07-18 | 2010-01-13 | 爱信艾达株式会社 | Drive device for hybrid vehicle |
| CN201896741U (en) * | 2010-11-23 | 2011-07-13 | 重庆红宇精密工业有限责任公司 | Oil pump of automobile automatic transmission |
| CN102734447A (en) * | 2011-03-30 | 2012-10-17 | 日立汽车***株式会社 | Electric oil pump |
| CN103620221A (en) * | 2011-12-28 | 2014-03-05 | 萱场工业株式会社 | Electric oil pump |
| CN105102251A (en) * | 2013-03-25 | 2015-11-25 | 丰田自动车株式会社 | Power transmission system for hybrid vehicle |
| CN207406482U (en) * | 2017-10-25 | 2018-05-25 | 哈尔滨东安汽车发动机制造有限公司 | A kind of oil pump for automatic transmission of automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW567285B (en) * | 2001-05-15 | 2003-12-21 | Honda Motor Co Ltd | Hydraulic controller for transmission |
-
2017
- 2017-10-25 CN CN201711012537.XA patent/CN107575376B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626914A (en) * | 2007-07-18 | 2010-01-13 | 爱信艾达株式会社 | Drive device for hybrid vehicle |
| CN201090432Y (en) * | 2007-09-26 | 2008-07-23 | 湖南江麓容大车辆传动有限责任公司 | Rotor oil pump |
| CN201896741U (en) * | 2010-11-23 | 2011-07-13 | 重庆红宇精密工业有限责任公司 | Oil pump of automobile automatic transmission |
| CN102734447A (en) * | 2011-03-30 | 2012-10-17 | 日立汽车***株式会社 | Electric oil pump |
| CN103620221A (en) * | 2011-12-28 | 2014-03-05 | 萱场工业株式会社 | Electric oil pump |
| CN105102251A (en) * | 2013-03-25 | 2015-11-25 | 丰田自动车株式会社 | Power transmission system for hybrid vehicle |
| CN207406482U (en) * | 2017-10-25 | 2018-05-25 | 哈尔滨东安汽车发动机制造有限公司 | A kind of oil pump for automatic transmission of automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107575376A (en) | 2018-01-12 |
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