CN102121406A - Cam shaft of engine - Google Patents
Cam shaft of engine Download PDFInfo
- Publication number
- CN102121406A CN102121406A CN 201110057383 CN201110057383A CN102121406A CN 102121406 A CN102121406 A CN 102121406A CN 201110057383 CN201110057383 CN 201110057383 CN 201110057383 A CN201110057383 A CN 201110057383A CN 102121406 A CN102121406 A CN 102121406A
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- oil
- camshaft
- oil channel
- cam shaft
- engine
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Abstract
The invention discloses a cam shaft of an engine, wherein the cam shaft is provided with an engine oil channel; the oil channel comprises a main oil channel and an auxiliary oil channel, wherein the main oil channel axially extends along the cam shaft; the auxiliary oil channel is arranged on the shaft neck of the cam shaft and communicated with the main oil channel and the outer surface of the shaft neck; a VVT (variable valve timing) phaser is arranged at the end part of the cam shaft and close to a first shaft neck of the cam shaft; the main oil channel is communicated with the oil channel of the VVT phaser; the auxiliary oil channel on the first shaft neck of the cam shaft is communicated with an oil groove of a first bearing cover; and lubricating oil enters the main oil channel through the auxiliary oil channel of the first shaft neck, one part of the lubricating oil flows out through the auxiliary oil channels of other shaft necks for lubricating, and the other lubricating oil enters the oil channel of the VVT phaser to provide oil for the VVT phaser. By adopting the technical scheme, not only is the oil supply of the VVT phaser satisified, but also the lubrication of the cam shaft is ensured; and the cam shaft has the advantages of simple and compact structure and lightened weight, the machining process difficulty is lowered, the manufacturing cost is lowered, the cost of the engine is saved, and the cost performance of the engine is improved greatly.
Description
Technical field
The invention belongs to the technical field of vehicular engine, specifically, the present invention relates to a kind of engine cam.
Background technique
In the lubrication system of motor car engine, the parts of lubricating oil in the main oil gallery is led to camshaft bearing, cam, timing sprocket through a minute oil circuit, returns oil sump by oil circuit again.Because working loads such as camshaft, camshaft bearing journal are bigger, so all adopt the pressure lubrication mode, this just need be provided with oil leab for the engine cam lubricating structure.
At present, the camshaft lubrication structure all is that oil leab is set on cylinder cap, forms oil passage, and the surface that the axle journal of all camshafts matches with bearing cap is carried out lubricating fully.Because the inside of cylinder cap will cast water jacket and air flue, can cause the cylinder cap complex structure again, the processing and lubrication oil duct is relatively difficult on cylinder cap.
In order to improve engine power performance, reduce the oil consumption of automobile, generally all on motor, increase the VVT technology now, and the VVT controller need be controlled by machine oil, the realization of this oil circuit must lean on camshaft to realize.
Summary of the invention
Technical problem to be solved by this invention is a kind of engine cam, its objective is to realize utilizing the optimization of the oil circuit of camshaft for VVT phase discriminator fuel feeding and realization camshaft lubrication oil channel structures.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of engine cam, be fixed on the cylinder head by a plurality of bearing caps, first axle journal of camshaft is located at its end, cooperate with the clutch shaft bearing lid, be provided with the machine oil oil duct on camshaft, described oil duct comprises along camshaft and extends axially the main oil gallery of setting and be arranged on secondary oil duct on the camshaft bearing journal that this pair oil duct is communicated with main oil gallery and axle journal outer surface; The VVT phase discriminator is arranged on described camshaft end, and near described camshaft first axle journal, described main oil gallery is communicated with the oil duct of described VVT phase discriminator.
Described camshaft is full supporting type camshaft, is provided with secondary oil duct on its each axle journal.
Secondary oil duct on described camshaft first axle journal is connected with the oil groove that described clutch shaft bearing covers.
Establish the bearing cap holding down bolt on the described bearing cap, realize the location of bearing cap and engine cylinder cap and be fastenedly connected by this bolt.
The present invention adopts technique scheme, is optimized by the lubricating oil path to engine cam, has both satisfied the fuel feeding of VVT phase discriminator, has guaranteed the lubricated of camshaft self again; This camshaft structure is simple, compact, has reduced the volumetric spaces of motor, and weight reduction reduces the mechanical processing technique difficulty; And air cylinder head structure becomes simple, and reduces its casting and difficulty of processing, and its assembly quality also is reduced; Employing can be saved the motor cost through the camshaft of this optimization, improves the cost performance of motor greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Mark among the above-mentioned figure is: 1, camshaft; 2, axle journal; 3, secondary oil duct; 4, VVT phase discriminator; 5, main oil gallery.
Embodiment
As shown in Figure 1, a kind of engine cam, be fixed on the cylinder head by a plurality of bearing caps, first axle journal of camshaft 1 is located at its end, cooperate with the clutch shaft bearing lid, be provided with the machine oil oil duct on camshaft 1, described oil duct comprises along camshaft 1 and extends axially the main oil gallery 5 of setting and be arranged on secondary oil duct 3 on the camshaft bearing journal 2 that this pair oil duct 3 is communicated with main oil gallery 5 and axle journal 2 outer surfaces; VVT phase discriminator 4 is arranged on described camshaft 1 end, and near described camshaft first axle journal, described main oil gallery 5 is communicated with the oil duct of described VVT phase discriminator 4.This camshaft 1 is full supporting type camshaft, is provided with secondary oil duct 3 on its each axle journal 2.Secondary oil duct 3 on first axle journal of this camshaft 1 is connected with the oil groove that described clutch shaft bearing covers, lubricant oil enters camshaft main oil gallery 5 through the secondary oil duct 3 of cylinder head, clutch shaft bearing lid, camshaft first axle journal, a part flows out through the secondary oil duct on all the other each axle journals 23 again, be lubricated, another part flows into the oil duct of VVT phase discriminator 4, gives VVT phase discriminator 4 fuel feeding.
On bearing cap, establish the bearing cap holding down bolt, realize the location of bearing cap and engine cylinder cap and be fastenedly connected by this bolt.
Adopt technique scheme, be optimized, both satisfied the fuel feeding of VVT phase discriminator 4, guaranteed the lubricated of camshaft 1 self again by lubricating oil path to engine cam 1; This camshaft 1 is simple in structure, compact, has reduced the volumetric spaces of motor, and weight reduction reduces the mechanical processing technique difficulty; And air cylinder head structure becomes simple, and reduces its casting and difficulty of processing, and its assembly quality also is reduced; Employing can be saved the motor cost through the camshaft 1 of this optimization, improves the cost performance of motor greatly.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out; or design of the present invention and technological scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (4)
1. engine cam, be fixed on the cylinder head by a plurality of bearing caps, first axle journal of camshaft (1) is located at its end, cooperate with the clutch shaft bearing lid, on camshaft (1), be provided with the machine oil oil duct, it is characterized in that: described oil duct comprises along camshaft (1) and extends axially the main oil gallery (5) of setting and be arranged on secondary oil duct (3) on the camshaft bearing journal (2) that this pair oil duct (3) is communicated with main oil gallery (5) and axle journal (2) outer surface; VVT phase discriminator (4) is arranged on described camshaft (1) end, and near described camshaft first axle journal, described main oil gallery (5) is communicated with the oil duct of described VVT phase discriminator (4).
2. engine cam according to claim 1 is characterized in that: described camshaft (1) is full supporting type camshaft, is provided with secondary oil duct (3) on its each axle journal (2).
3. engine cam according to claim 1 and 2 is characterized in that: the secondary oil duct (3) on described camshaft first axle journal is connected with the oil groove that described clutch shaft bearing covers.
4. engine cam according to claim 3 is characterized in that: establish the bearing cap holding down bolt on the described bearing cap, realize the location of bearing cap and engine cylinder cap and be fastenedly connected by this bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110057383 CN102121406A (en) | 2011-03-10 | 2011-03-10 | Cam shaft of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110057383 CN102121406A (en) | 2011-03-10 | 2011-03-10 | Cam shaft of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102121406A true CN102121406A (en) | 2011-07-13 |
Family
ID=44250050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110057383 Pending CN102121406A (en) | 2011-03-10 | 2011-03-10 | Cam shaft of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102121406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425464A (en) * | 2011-11-23 | 2012-04-25 | 奇瑞汽车股份有限公司 | First bearing cover of engine cylinder cover |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368492A (en) * | 2008-06-13 | 2009-02-18 | 奇瑞汽车股份有限公司 | Camshaft of car engine |
| CN201367926Y (en) * | 2009-02-17 | 2009-12-23 | 奇瑞汽车股份有限公司 | Engine camshaft bearing cover |
| CN201461023U (en) * | 2009-07-13 | 2010-05-12 | 奇瑞汽车股份有限公司 | Camshaft lubrication structure with VVT |
| CN202039912U (en) * | 2011-06-09 | 2011-11-16 | 锐展(铜陵)科技有限公司 | Novel engine camshaft |
-
2011
- 2011-03-10 CN CN 201110057383 patent/CN102121406A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368492A (en) * | 2008-06-13 | 2009-02-18 | 奇瑞汽车股份有限公司 | Camshaft of car engine |
| CN201367926Y (en) * | 2009-02-17 | 2009-12-23 | 奇瑞汽车股份有限公司 | Engine camshaft bearing cover |
| CN201461023U (en) * | 2009-07-13 | 2010-05-12 | 奇瑞汽车股份有限公司 | Camshaft lubrication structure with VVT |
| CN202039912U (en) * | 2011-06-09 | 2011-11-16 | 锐展(铜陵)科技有限公司 | Novel engine camshaft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425464A (en) * | 2011-11-23 | 2012-04-25 | 奇瑞汽车股份有限公司 | First bearing cover of engine cylinder cover |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110713 |