CN104179613A - High-voltage connecting pipe for engine - Google Patents
High-voltage connecting pipe for engine Download PDFInfo
- Publication number
- CN104179613A CN104179613A CN201310198979.3A CN201310198979A CN104179613A CN 104179613 A CN104179613 A CN 104179613A CN 201310198979 A CN201310198979 A CN 201310198979A CN 104179613 A CN104179613 A CN 104179613A
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- connecting pipe
- pressure connecting
- pipe body
- engine
- voltage connecting
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Abstract
The invention relates to a high-voltage connecting pipe for an engine. The high-voltage connecting pipe for the engine comprises a high-voltage connecting pipe body, wherein an oil outlet end of the high-voltage connecting pipe body is connected with a high-voltage oil pipe of the engine; a conical circular truncated cone is formed on the outer side of the end face of the oil outlet end of the high-voltage connecting pipe body. The high-voltage connecting pipe for the engine is characterized in that at least one locating bulge matched with a locating slot of a cylinder head of the engine is arranged on the periphery of the high-voltage connecting pipe body. According to the high-voltage connecting pipe for the engine, a traditional symmetric locating bulge structure is changed to be a unilateral key pin structure, so that the working accuracy of the high-voltage connecting pipe is improved, the guidance quality between the high-voltage connecting pipe and the engine is also improved, the problem that the consistency of the locating bulges needs to be ensured in the prior art is solved, and the production efficiency and the production quality are improved.
Description
Technical field
The present invention relates to high-pressure connecting pipe, especially a kind of on motor, use for connect high-pressure oil pipe and oil sprayer high-pressure connecting pipe.
Background technique
High-pressure connecting pipe is assemblied on the cylinder cap of motor, for connecting high-pressure oil pipe and oil sprayer, is the passage of fuel oil access to engine firing chamber.Motor is the emission level that reaches higher, and the pressure of fuel oil is had relatively high expectations, and conventionally reaches (150～160) MPA, under High Pressure, high-pressure connecting pipe, as a kind of middle transition pipe, if the sealing of its each sealing surface can not be guaranteed, easily causes fuel leakage; Because the oil sprayer on motor belongs to precision part, if the turbidity test of fuel oil are not high, easily cause oil sprayer to occur the fault of clamping stagnation simultaneously.
At present, as the structure of the patent No. high-pressure connecting pipe that is 200920164925.4 comprises a high-pressure connecting pipe body, the oil outlet end of body is connected with engine fuel injector, its oil inlet end is connected with engine high pressure oil pipe, body oil outlet end end face outside is made as sphere curved surface, on high-pressure connecting pipe body, be provided with and the corresponding positioning convex of engine cylinder cover locating slot, this positioning convex is the periphery that is symmetrically arranged in high-pressure connecting pipe body, this mode being arranged symmetrically with is unfavorable for the guiding of positioning convex, and in to the course of working of high-pressure connecting pipe body, the degree of symmetry of positioning convex cannot guarantee unanimously, thereby affect the assembly precision of high-pressure connecting pipe body, affect quality and the manufacturing efficiency of high-pressure connecting pipe body.
Summary of the invention
The applicant, for these shortcomings in above-mentioned existing production, provides a kind of delicate structure, and quality is light, easy to operate, a kind of high-pressure connecting pipe for motor, thereby.
The technical solution adopted in the present invention is as follows:
For a high-pressure connecting pipe for motor, comprise a high-pressure connecting pipe body, the oil outlet end of high-pressure connecting pipe body is connected with engine high pressure oil pipe, and the oil outlet end end face outside of high-pressure connecting pipe body is taper round platform; It is characterized in that: in the periphery of described high-pressure connecting pipe body, at least arrange a positioning convex matching with engine cylinder cover locating slot.
Its further technological scheme is:
Described positioning convex is straight pin;
Angle α between two margin lines of described taper round platform axis symmetry is 45 ° ± 1 °;
The inner side of the oil inlet end of described high-pressure connecting pipe body is conical surface, and conical surface cone angle beta is 60 ° ± 1 °, and described conical surface opening area progressively increases progressively from inside to outside;
Described high-pressure connecting pipe body is provided with the connected element being connected with engine cylinder cover, and the locking face that connected element contacts with engine cylinder cover is sphere curved surface;
In the oil inlet end of described high-pressure connecting pipe body, be provided with filtering pin.
Beneficial effect of the present invention is as follows:
The present invention is by changing the structure of the symmetrical positioning convex of tradition into one-sided key pin structure, not only improved machining accuracy of the present invention, also improve the guidance quality between the present invention and motor, avoided needing to guarantee the conforming problem of positioning convex in the past, improved manufacturing efficiency and the quality of production.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that Fig. 1 is at the structure for amplifying schematic diagram at I place.
Fig. 3 is that Fig. 1 is at the structure for amplifying schematic diagram at II place.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, the present invention includes a high-pressure connecting pipe body 2, the oil outlet end 1 of high-pressure connecting pipe body 2 is connected with engine high pressure oil pipe, the oil outlet end 1 end face outside of high-pressure connecting pipe body 2 is taper round platform, correspondence is inserted into oil sprayer joint, contacts (not shown in oil sprayer Fig. 1) with the conical wall line of oil sprayer joint; The angle α of take between two margin lines of taper round platform axis symmetry as shown in Figure 2, is 45 ° ± 1 °.In the periphery of high-pressure connecting pipe body 2, at least arrange a positioning convex 3 matching with engine cylinder cover locating slot, positioning convex 3 is straight pin, and this straight pin is installed in the keyway having on high-pressure connecting pipe body 2; Positioning convex 3, in order to locate high-pressure connecting pipe, cannot arbitrarily rotate it, is beneficial to sealing.Oil inlet end 5 inner sides 501 of high-pressure connecting pipe body 2 are conical surface, conical surface cone angle beta is 60 ° ± 1 °, conical surface opening area progressively increases progressively from inside to outside, the oil inlet end 5 of high-pressure connecting pipe body 2 and the corresponding connection of the connecting end of high-pressure oil pipe (not shown), high-pressure connecting pipe body 2 is provided with the connected element 4 being connected with engine cylinder cover, the locking face 401 that connected element 4 contacts with engine cylinder cover is sphere curved surface, and connected element 4 is contacted with engine cylinder cover line.In the oil inlet end 5 of high-pressure connecting pipe body 2, be provided with filtering pin 6, for filter fuel, guarantee the safety reliability that engine fuel injector is used.
The present invention is by changing the structure of the symmetrical positioning convex of tradition into one-sided key pin structure, not only improved machining accuracy of the present invention, also improve the guidance quality between the present invention and motor, avoided needing to guarantee the conforming problem of positioning convex in the past, the machining accuracy that has greatly improved high-pressure connecting pipe body, has improved manufacturing efficiency and the quality of production.
More than describing is explanation of the invention, is not the restriction to invention, and limited range of the present invention is referring to claim, and without prejudice to basic structure of the present invention in the situation that, the present invention can do any type of modification.
Claims (6)
1. the high-pressure connecting pipe for motor, comprise a high-pressure connecting pipe body (2), the oil outlet end (1) of described high-pressure connecting pipe body (2) is connected with engine high pressure oil pipe, and oil outlet end (1) the end face outside of described high-pressure connecting pipe body (2) is taper round platform; It is characterized in that: in the periphery of described high-pressure connecting pipe body (2), at least arrange a positioning convex matching with engine cylinder cover locating slot (3).
2. a kind of high-pressure connecting pipe for motor as claimed in claim 1, is characterized in that: described positioning convex (3) is straight pin.
3. a kind of high-pressure connecting pipe for motor as claimed in claim 1, is characterized in that: the angle α between two margin lines of described taper round platform axis symmetry is 45 ° ± 1 °.
4. a kind of high-pressure connecting pipe for motor as claimed in claim 1, it is characterized in that: the inner side (501) of the oil inlet end (5) of described high-pressure connecting pipe body (2) is conical surface, described conical surface cone angle beta is 60 ° ± 1 °, and described conical surface opening area progressively increases progressively from inside to outside.
5. a kind of high-pressure connecting pipe for motor as claimed in claim 1, it is characterized in that: described high-pressure connecting pipe body (2) is provided with the connected element (4) being connected with engine cylinder cover, the locking face (401) that described connected element (4) contacts with engine cylinder cover is sphere curved surface.
6. a kind of high-pressure connecting pipe for motor as claimed in claim 1, is characterized in that: in the oil inlet end (5) of described high-pressure connecting pipe body (2), be provided with filtering pin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310198979.3A CN104179613A (en) | 2013-05-22 | 2013-05-22 | High-voltage connecting pipe for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310198979.3A CN104179613A (en) | 2013-05-22 | 2013-05-22 | High-voltage connecting pipe for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104179613A true CN104179613A (en) | 2014-12-03 |
Family
ID=51960911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310198979.3A Pending CN104179613A (en) | 2013-05-22 | 2013-05-22 | High-voltage connecting pipe for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104179613A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687386A (en) * | 2016-08-04 | 2018-02-13 | 大陆汽车有限公司 | A kind of fuel injection assemblies for internal combustion engine |
-
2013
- 2013-05-22 CN CN201310198979.3A patent/CN104179613A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687386A (en) * | 2016-08-04 | 2018-02-13 | 大陆汽车有限公司 | A kind of fuel injection assemblies for internal combustion engine |
| US10487786B2 (en) | 2016-08-04 | 2019-11-26 | Vitesco Technologies GmbH | Fuel injection assembly for an internal combustion engine |
| CN107687386B (en) * | 2016-08-04 | 2019-12-31 | 大陆汽车有限公司 | Fuel injection assembly for internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |