CN204041140U - A kind of lubricating structure with VVT camshaft - Google Patents
A kind of lubricating structure with VVT camshaft Download PDFInfo
- Publication number
- CN204041140U CN204041140U CN201420377326.1U CN201420377326U CN204041140U CN 204041140 U CN204041140 U CN 204041140U CN 201420377326 U CN201420377326 U CN 201420377326U CN 204041140 U CN204041140 U CN 204041140U
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- CN
- China
- Prior art keywords
- buffer memory
- oilhole
- camshaft
- passage
- circular arc
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of engine cam lubricating structure, be specially a kind of lubricating structure with VVT camshaft, the first oilhole, the second oilhole, the 3rd oilhole is offered outside camshaft, three corresponding bearings of oilhole cover three oil ducts be provided with, described first oilhole be the first buffer memory passage with forming some buffer memory circular arc oil grooves between the second oilhole in main oil gallery, the diameter of the buffer memory circular arc oil groove in the first buffer memory passage is in increasing progressively state; Second oilhole is the second buffer memory passage with forming some buffer memory arc grooves between the 3rd oilhole in main oil gallery, the state that the diameter of the buffer memory circular arc oil groove in the second buffer memory passage tapers off; Described first buffer memory passage is shaped to hydraulic chamber with through in the joint of the second buffer memory passage is namely immediately below the second oilhole, and the utility model structure is simply, practical.
Description
Technical field
Model utility relates to a kind of engine cam lubricating structure, is specially a kind of lubricating structure with VVT camshaft.
Background technique
Variable Valve Timing Technique of IC Engine is a quite ripe technology nowadays, for the production of motorcar engine, motor adopts Variable Valve Timing to improve charge, and volumetric efficiency is increased, and the moment of torsion of motor and power can be further improved.In car engine lubrication system, due to camshaft, the working loads such as main neck axle are comparatively large, so what all adopt is the method for pressure lubrication, this just needs to arrange oil leab in engine cam.
The patent No. 2009201336283 discloses a kind of lubricating structure of VVT camshaft, solve the problem of lubricating oil filling road difficulty in process on cylinder cap, structure oil circuit in the middle of this patent documentation can not self-oil storage in the middle of lubrication, and the efficiency of adding when lubricant oil in first time can be low.And owing to being hollow shaft, inwall is thinner, can allow reduce its working life.
Model utility content
The purpose of this utility model is to provide a kind of rational in infrastructure, simple, practical, effectively can solve the lubricating structure of the band VVT camshaft of existing issue.
For meeting above-mentioned purpose, the utility model provides a kind of effective technological scheme:
A kind of lubricating structure with VVT camshaft, camshaft is hollow shaft, in axial direction main oil gallery is provided with in camshaft, intracardiac in the front end of described camshaft timing bolt and sleeve are set, the first oilhole, the second oilhole, the 3rd oilhole is offered outside camshaft, three corresponding bearings of oilhole cover three oil ducts be provided with, it is characterized in that: described first oilhole be the first buffer memory passage with forming some buffer memory circular arc oil grooves between the second oilhole in main oil gallery, the diameter of the buffer memory circular arc oil groove in the first buffer memory passage is in increasing progressively state; Second oilhole is the second buffer memory passage with forming some buffer memory arc grooves between the 3rd oilhole in main oil gallery, the state that the diameter of the buffer memory circular arc oil groove in the second buffer memory passage tapers off; Described first buffer memory passage is shaped to hydraulic chamber with through in the joint of the second buffer memory passage is namely immediately below the second oilhole.
Further, the locular wall of described hydraulic chamber is inclined plane shape, and the inwall with the second oilhole is shaped to funnel shaped.
Contrast the deficiencies in the prior art, the beneficial effect that the technological scheme that the utility model provides is brought:
1. the oiling road in traditional camshaft is provided with the lubricant oil that two buffer memory passages make oneself to store trace, and when adding oil to camshaft second time, due to the mobility of oil, the oil of storage can have the effect guided fast, improves working efficiency.
2.increasing progressively of buffer memory circular arc oil groove in buffer memory passage, the circular arc oil groove diameter under decrement states is, second circular arc oil groove is one times of first circular arc oil groove, and this is to raise the efficiency when guiding lubricant oil.
3.two buffer memory passages shaping in oiling have made inwall thickening, and structural strength increases, and improves working life.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
Embodiment
A kind of lubricating structure with VVT camshaft, camshaft is hollow shaft, main oil gallery 1 is in axial direction provided with in camshaft, intracardiac in the front end of described camshaft timing bolt and sleeve are set, the first oilhole 2 is offered outside camshaft, second oilhole 3, 3rd oilhole 4, three corresponding bearings of oilhole cover three oil ducts be provided with, described first oilhole 2 be the first buffer memory passage 5 with forming some buffer memory circular arc oil grooves between the second oilhole 3 in main oil gallery 1, the diameter of the buffer memory circular arc oil groove 51 in the first buffer memory passage 5 is in increasing progressively state, second circular arc oil groove is one times of first circular arc oil groove diameter, 3rd circular arc oil groove is one times of second circular arc oil groove diameter, by that analogy.Second oilhole 3 is the second buffer memory passage 6 with forming some buffer memory arc grooves between the 3rd oilhole 4 in main oil gallery 1, the state that the diameter of the buffer memory circular arc oil groove 61 in the second buffer memory passage 6 tapers off, this kind of status architecture is just contrary with the first buffer memory channel design circular arc oil groove diameter arrangement.The arrangement mode of two kinds of circular arc oil grooves is more steady in order to allow camshaft be in operation.Described first buffer memory passage 5 is shaped to hydraulic chamber 7 with through in the joint of the second buffer memory passage 6 is namely immediately below the second oilhole.
The locular wall of described hydraulic chamber 7 is inclined plane shapes, and the inwall with the second oilhole is shaped to funnel shaped, and funnel-like is to make when adding oil fuel-displaced quantitative change large, raising the efficiency.
Claims (2)
1. the lubricating structure with VVT camshaft, camshaft is hollow shaft, in axial direction main oil gallery is provided with in camshaft, intracardiac in the front end of described camshaft timing bolt and sleeve are set, the first oilhole, the second oilhole, the 3rd oilhole is offered outside camshaft, three corresponding bearings of oilhole cover three oil ducts be provided with, it is characterized in that: described first oilhole be the first buffer memory passage with forming some buffer memory circular arc oil grooves between the second oilhole in main oil gallery, the diameter of the buffer memory circular arc oil groove in the first buffer memory passage is in increasing progressively state; Second oilhole is the second buffer memory passage with forming some buffer memory arc grooves between the 3rd oilhole in main oil gallery, the state that the diameter of the buffer memory circular arc oil groove in the second buffer memory passage tapers off; Described first buffer memory passage is shaped to hydraulic chamber with through in the joint of the second buffer memory passage is namely immediately below the second oilhole.
2. a kind of lubricating structure with VVT camshaft according to claim 1, is characterized in that: the locular wall of described hydraulic chamber is inclined plane shape, and the inwall with the second oilhole is shaped to funnel shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420377326.1U CN204041140U (en) | 2014-07-09 | 2014-07-09 | A kind of lubricating structure with VVT camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420377326.1U CN204041140U (en) | 2014-07-09 | 2014-07-09 | A kind of lubricating structure with VVT camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041140U true CN204041140U (en) | 2014-12-24 |
Family
ID=52241818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420377326.1U Expired - Fee Related CN204041140U (en) | 2014-07-09 | 2014-07-09 | A kind of lubricating structure with VVT camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041140U (en) |
-
2014
- 2014-07-09 CN CN201420377326.1U patent/CN204041140U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |