CN203809075U - Self-lubricating engine cam shaft - Google Patents
Self-lubricating engine cam shaft Download PDFInfo
- Publication number
- CN203809075U CN203809075U CN201420067348.8U CN201420067348U CN203809075U CN 203809075 U CN203809075 U CN 203809075U CN 201420067348 U CN201420067348 U CN 201420067348U CN 203809075 U CN203809075 U CN 203809075U
- Authority
- CN
- China
- Prior art keywords
- cam
- oil
- self
- cam shaft
- lubricating engine
- 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 - Fee Related
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a self-lubricating engine cam shaft. The self-lubricating engine cam shaft comprises a shaft body, and an air inlet cam, an air outlet cam and a supporting shaft neck, the three of which sleeve the shaft body; annular oil grooves are formed in the two side surfaces of the air inlet cam and the air outlet cam; annular sealing rings are arranged outside the annular oil grooves; a plurality of oil ducts are arranged at the peripheries of the annular oil grooves; oil holes are formed in the peripheries of the sealing rings so that the annular oil grooves are communicated with the oil ducts. The self-lubricating engine cam shaft is characterized in that the lubricating oil existing in the oil grooves in advance is gradually released by virtue of the oil ducts in the rotation process so that the self-lubrication function of the cam is realized, and abnormal wear of the cam shaft due to the blockage of the lubricating oil ducts is avoided, and moreover, a titanium coating is formed to cover the cam shaft so that the hardness and wear resistance of the cam shaft can be greatly improved.
Description
Technical field
The utility model relates to a kind of self lubricating engine cam.
Background technique
camshaft is positioned at the end of engine lubrication system, so lubrication state allows of no optimist.If oil pump is because service time is long etc., reason occurs that charge oil pressure is not enough, or oil leab obstruction causes lubricant oil cannot arrive camshaft, or the excessive lubricant oil that causes of bearing cap clamping bolt screw-down torque cannot enter camshaft gap, all can cause the inordinate wear of camshaft.
Summary of the invention
The utility model improves the problems referred to above, when the technical problems to be solved in the utility model is existing camshaft length service time, easily occurs that charge oil pressure deficiency causes the inordinate wear of camshaft.
Specific embodiments of the present utility model is: a kind of self lubricating engine cam, comprise an axis body and be sheathed on intake cam, the exhaust cam on axis body and support axle journal, described intake and exhaust cam both side surface is provided with annular oil groove, described annular oil groove outside is provided with O-ring seal, described annular oil groove perimembranous is provided with a plurality of oil ducts, and described seal ring perimembranous is provided with oilhole makes annular oil groove be connected with oil duct.
Further, described intake cam, exhaust cam outer surface are provided with titanizing layer.
Further, described axis body middle part is provided with Water-cooling circulating passage.
Compared with prior art, the utlity model has following beneficial effect: the pre-lubricant oil in oil groove before this of the utility model utilization progressively discharges by oil duct in the process of rotating, realized the selflubricating ability of cam, while avoiding oil leab to stop up and cause camshaft inordinate wear, by being provided with titanizing layer in camshaft outside, can greatly increase hardness and the wear resistance of camshaft in addition.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is the utility model cam structure schematic diagram.
Fig. 3 is the utility model cam structure side view.
embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As shown in Figures 1 to 3, a kind of self lubricating engine cam, comprise an axis body 10 and be sheathed on intake cam 20, the exhaust cam 30 on axis body and support axle journal, described intake and exhaust cam both side surface is provided with annular oil groove 40, described annular oil groove 40 outsides are provided with O-ring seal 50, described annular oil groove 40 perimembranous are provided with a plurality of oil ducts 50, and described seal ring perimembranous is provided with oilhole 510 makes annular oil groove be connected with oil duct.Described intake cam, exhaust cam outer surface are provided with titanizing layer 60, and axis body 10 middle parts can also be provided with Water-cooling circulating passage 70, to realize water-cooled, reduce the temperature of axis body, improve the working life of axis body.
During engine operation, intake cam 20, exhaust cam 30 are under the effect of rotation.Utilize pre-lubricant oil in oil groove before this progressively by oil duct, to discharge in the process of rotating, realized the selflubricating ability of cam,
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (3)
1. a self lubricating engine cam, it is characterized in that, comprise an axis body and be sheathed on intake cam, the exhaust cam on axis body and support axle journal, described intake cam and exhaust cam both side surface are provided with annular oil groove, described annular oil groove outside is provided with O-ring seal, described annular oil groove perimembranous is provided with a plurality of oil ducts, and described seal ring perimembranous is provided with oilhole makes annular oil groove be connected with oil duct.
2. self lubricating engine cam according to claim 1, described intake cam, exhaust cam outer surface are provided with titanizing layer.
3. self lubricating engine cam according to claim 1, is provided with Water-cooling circulating passage in the middle part of described axis body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420067348.8U CN203809075U (en) | 2014-02-17 | 2014-02-17 | Self-lubricating engine cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420067348.8U CN203809075U (en) | 2014-02-17 | 2014-02-17 | Self-lubricating engine cam shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809075U true CN203809075U (en) | 2014-09-03 |
Family
ID=51447843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420067348.8U Expired - Fee Related CN203809075U (en) | 2014-02-17 | 2014-02-17 | Self-lubricating engine cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105078592A (en) * | 2014-05-23 | 2015-11-25 | 重庆润泽医药有限公司 | Resilient implant tooth |
-
2014
- 2014-02-17 CN CN201420067348.8U patent/CN203809075U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105078592A (en) * | 2014-05-23 | 2015-11-25 | 重庆润泽医药有限公司 | Resilient implant tooth |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160217 |