CN202325959U - Positioning structure of high pressure fuel pump drive shaft - Google Patents
Positioning structure of high pressure fuel pump drive shaft Download PDFInfo
- Publication number
- CN202325959U CN202325959U CN2011204380764U CN201120438076U CN202325959U CN 202325959 U CN202325959 U CN 202325959U CN 2011204380764 U CN2011204380764 U CN 2011204380764U CN 201120438076 U CN201120438076 U CN 201120438076U CN 202325959 U CN202325959 U CN 202325959U
- Authority
- CN
- China
- Prior art keywords
- high pressure
- fuel pump
- pressure fuel
- shaft part
- pump drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a positioning structure of a high pressure fuel pump drive shaft, which comprises the high pressure fuel pump drive shaft, wherein the high pressure fuel pump drive shaft comprises a connecting shaft section and a cam arranged on the connecting shaft section. The positioning structure of the high pressure fuel pump drive shaft is characterized in that: a positioning shaft section is also fixedly connected to the end face of the connecting shaft section; and a closed shell for supporting and axially limiting the positioning shaft section is arranged on the high pressure fuel pump drive shaft. According to the positioning structure of the high pressure fuel pump drive shaft, a step hole and a support cover plate are used for axially limiting the positioning shaft section of the high pressure fuel pump drive shaft, so that axial endplay generated when the high pressure fuel pump drive shaft is operated is prevented, and the reliability of an automotive engine is improved.
Description
Technical field
The utility model relates to technical field of automobile engine, is specifically related to a kind of high pressure fuel pump live axle position structure.
Technical background
Existing automobile will be directly injected to inside, firing chamber with in-cylinder direct fuel-injection engine owing to fuel oil, thus in order to improve atomizing effect, all high pressure fuel pump need be installed, for motor provides pressure very high fuel oil.High pressure fuel pump generally is installed in two positions, and a position is around the motor head train, relies on the rotation of certain belt pulley or sprocket wheel to drive the high pressure fuel pump work; Another position is the engine cylinder cap place, relies on the rotation of the camshaft in the cylinder head to drive the high pressure fuel pump work.
For the above-mentioned structure that high pressure fuel pump is installed on the engine cylinder cap place; Its high pressure fuel pump camshaft of no use directly drives; But earlier the power of camshaft is passed to the high pressure fuel pump live axle, then the power of high pressure fuel pump live axle is passed to high pressure fuel pump.Yet the assembling of existing structure mesohigh fuel pump live axle the time does not have the axial limiting structure, working procedure mesohigh fuel pump live axle can be in engine cylinder cap axial float.Had a strong impact on the reliability of motor car engine.
The model utility content
The purpose of the utility model is to above-mentioned technical problem, and a kind of high pressure fuel pump live axle position structure is provided, the axial float when this structure can prevent the work of high pressure fuel pump live axle.
For realizing this purpose; The high pressure fuel pump live axle position structure that the utility model designed; Comprise the high pressure fuel pump live axle; Said high pressure fuel pump live axle comprises and connects shaft part and be arranged on the cam that is connected on the shaft part that it is characterized in that: the end face of said connection shaft part also is fixedly connected with the location shaft part, and said high pressure fuel pump live axle is provided with and can supports the also enclosing housing of axial limiting location shaft part.
Said enclosing housing comprises the high pressure fuel pump support, is equipped in the rack plate of high pressure fuel pump bracket end face; The axle journal of said connection shaft part is less than the axle journal of location shaft part; Be provided with shoulder hole in the said high pressure fuel pump support, the aperture of said shoulder hole be connected shaft part coupling, the macropore of shoulder hole and location shaft part coupling; One end of the spacing location of the ladder surface of said shoulder hole shaft part, the other end of the spacing location of rack plate shaft part.
Offer the tappet hole corresponding on the said high pressure fuel pump support with cam.
The location shaft part of shoulder hole in the utility model and rack plate axial limiting high pressure fuel pump live axle has prevented the axial float when the high pressure fuel pump live axle is worked, and has improved the reliability of motor car engine.
Description of drawings
Fig. 1 is the structural representation of the utility model mesohigh fuel pump live axle;
Fig. 2 is the assembly structure schematic representation of the utility model;
Fig. 3 is the work overall structure schematic representation of the utility model.
Wherein, 1-high pressure fuel pump live axle, 1-1-connect shaft part, 1-2-location shaft part, 1-3-cam, 2-cylinder head, 2-1-camshaft, 3-high pressure fuel pump support, 4-shoulder hole, 4-1-aperture, 4-2-macropore, 4-3-ladder surface, 4-4-tappet hole, 5-rack plate, 6-high pressure fuel pump.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify:
High pressure fuel pump live axle position structure shown in Fig. 1～2; Comprise high pressure fuel pump support 3, high pressure fuel pump live axle 1, be equipped in the rack plate 5 of high pressure fuel pump support 3 end faces; High pressure fuel pump live axle 1 comprises and connects shaft part 1-1 and locate shaft part 1-2, connects shaft part 1-1 and coaxial fixed connection of location shaft part 1-2, connects the axle journal of the axle journal of shaft part 1-1 less than location shaft part 1-2; Be provided with shoulder hole 4 in the high pressure fuel pump support 3; The aperture 4-1 of shoulder hole 4 be connected shaft part 1-1 coupling, the macropore 4-2 of shoulder hole 4 and location shaft part 1-2 coupling, the end of the spacing location of the ladder surface 4-3 shaft part 1-2 of shoulder hole 4; The other end of rack plate 5 spacing location shaft part 1-2 connects shaft part 1-1 and is provided with cam 1-3.
In the technique scheme, offer the tappet hole 4-4 corresponding on the high pressure fuel pump support 3 with cam 1-3.
During the utility model assembling; High pressure fuel pump support 3 is fixedly connected with cylinder head 2; The connection shaft part 1-1 of high pressure fuel pump live axle 1 is fixedly connected with the camshaft 2-1 on the cylinder head 2; The axial limiting that the ladder surface 4-3 of shoulder hole 4 and rack plate 5 are realized high pressure fuel pump live axle 1 prevents axially to scurry.Fixing high pressure fuel pump 6 on the high pressure fuel pump support 3, the tappet of high pressure fuel pump 6 passes tappet hole 4-4 and cooperates with cam 1-3.
The content that this specification is not done to describe in detail belongs to related domain professional and technical personnel's known prior art.
Claims (3)
1. high pressure fuel pump live axle position structure; Comprise high pressure fuel pump live axle (1); Said high pressure fuel pump live axle (1) comprises and connects shaft part (1-1) and be arranged on the cam (1-3) that is connected on the shaft part (1-1); It is characterized in that: the end face of said connection shaft part (1-1) also is fixedly connected with location shaft part (1-2), and said high pressure fuel pump live axle (1) is provided with and can supports the also enclosing housing of axial limiting location shaft part (1-2).
2. high pressure fuel pump live axle position structure according to claim 1; It is characterized in that: said enclosing housing comprises high pressure fuel pump support (3), is equipped in the rack plate (5) of high pressure fuel pump support (3) end face; The axle journal of said connection shaft part (1-1) is less than the axle journal of location shaft part (1-2); Be provided with shoulder hole (4) in the said high pressure fuel pump support (3), the aperture (4-1) of said shoulder hole (4) be connected shaft part (1-1) coupling, the macropore (4-2) of shoulder hole (4) and location shaft part (1-2) coupling; One end of ladder surface (4-3) the spacing location shaft part (1-2) of said shoulder hole (4), the other end of rack plate (5) spacing location shaft part (1-2).
3. high pressure fuel pump live axle position structure according to claim 1 is characterized in that: offer the tappet hole (4-4) corresponding with cam (1-3) on the said high pressure fuel pump support (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204380764U CN202325959U (en) | 2011-11-08 | 2011-11-08 | Positioning structure of high pressure fuel pump drive shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204380764U CN202325959U (en) | 2011-11-08 | 2011-11-08 | Positioning structure of high pressure fuel pump drive shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325959U true CN202325959U (en) | 2012-07-11 |
Family
ID=46437941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204380764U Expired - Lifetime CN202325959U (en) | 2011-11-08 | 2011-11-08 | Positioning structure of high pressure fuel pump drive shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325959U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016335A (en) * | 2012-11-30 | 2013-04-03 | 重庆长安汽车股份有限公司 | High pressure oil pump lubricating oil passage of direct injection gasoline engine |
| CN105299030A (en) * | 2015-11-23 | 2016-02-03 | 侯如升 | Guide mechanism of driving shaft |
| CN112776757A (en) * | 2019-11-04 | 2021-05-11 | 常州中车铁马科技实业有限公司 | Grinding sub assembly and method, wheel tread cleaning device and rail vehicle |
-
2011
- 2011-11-08 CN CN2011204380764U patent/CN202325959U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016335A (en) * | 2012-11-30 | 2013-04-03 | 重庆长安汽车股份有限公司 | High pressure oil pump lubricating oil passage of direct injection gasoline engine |
| CN103016335B (en) * | 2012-11-30 | 2015-12-02 | 重庆长安汽车股份有限公司 | The petrolic lubricating oil way of high-pressure oil pump of a kind of straight spray |
| CN105299030A (en) * | 2015-11-23 | 2016-02-03 | 侯如升 | Guide mechanism of driving shaft |
| CN105299030B (en) * | 2015-11-23 | 2018-03-23 | 荣腾实业（苏州）有限公司 | A kind of drive shaft guiding mechanism |
| CN112776757A (en) * | 2019-11-04 | 2021-05-11 | 常州中车铁马科技实业有限公司 | Grinding sub assembly and method, wheel tread cleaning device and rail vehicle |
| CN112776757B (en) * | 2019-11-04 | 2022-11-08 | 常州中车铁马科技实业有限公司 | Grinding sub assembly and method, wheel tread cleaning device and rail vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |