Unlock instant, AI-driven research and patent intelligence for your innovation.

Automobile engine cam shaft

A technology of automobile engine and camshaft, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of poor gas distribution consistency, large vibration and impact noise, etc., and achieve the improvement of vibration and impact noise and ensure consistency Effect

Inactive Publication Date: 2007-08-15
上海华普发动机有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automobile engine camshaft, which adopts a double camshaft structure, and solves the problems of poor gas distribution consistency, large vibration and impact noise, etc. due to the single camshaft structure.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Automobile engine cam shaft
  • Automobile engine cam shaft
  • Automobile engine cam shaft

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0025] The first embodiment of the present invention: the transmission gear 13 is arranged on the exhaust camshaft 3 . A drive gear 11 is arranged on the intake camshaft 2 .

[0026] The exhaust camshaft 3 drives the drive gear 11 mounted on the intake camshaft 2 to rotate through the transmission gear 13 arranged thereon. The specific transmission process is as follows.

[0027] First, the crankshaft (not shown in FIG. 1 ) connected to the exhaust camshaft 3 drives and rotates the exhaust camshaft 3 .

[0028] Since the transmission gear 13 is linked with the exhaust camshaft 3, the transmission gear 13 is driven to move.

[0029] Moreover, the transmission gear 13 is meshed with the driving gear 11, and when the transmission gear 13 rotates, it can drive the driving gear 11 to move.

[0030] Since the drive gear 11 is linked with the intake camshaft 2, the rotation of the drive gear 11 also drives the intake camshaft 2 to rotate.

[0031] Through the above-mentioned kine...

no. 2 approach

[0033] The second embodiment of the present invention: Compared with the first embodiment, an auxiliary gear 12 is added on the intake camshaft 2 . The auxiliary gear 12 cooperates with the transmission gear 13 installed on the exhaust camshaft 3 for transmission. Auxiliary gear 12 auxiliary transmission gear 13 drives drive gear 11, (with gear spring damper inside) so just further increased the accuracy of transmission synchronization. The auxiliary gear can realize the backlash-free meshing of the transmission gear and the drive gear, reduce vibration, reduce noise and prolong service life.

[0034] Also installed on the intake camshaft 2 increases the auxiliary gear 12 can be spur gears, helical gears or other gears. The driving gear 11 and the auxiliary gear 12 installed on the intake camshaft 2 and the transmission gear 13 installed on the exhaust camshaft 3 need to be able to mesh with each other to realize transmission. The use of other specific gear structures for th...

no. 3 approach

[0035] The third embodiment of the present invention: Compared with the second embodiment, the positional relationship between the intake camshaft 2 and the exhaust camshaft 3 is defined. In the third embodiment of the present invention, the intake camshaft 2 and the exhaust camshaft 3 are in a parallel positional relationship.

[0036] Since the intake camshaft 2 and the exhaust camshaft 3 are parallel, the space of the engine can be effectively reduced and the cost can be reduced.

[0037] Referring to Fig. 2, this figure is a transverse sectional view of an engine according to an embodiment of the present invention.

[0038] The labels in Figure 2 correspond to the names of the components:

[0039] 1 is cylinder head cover, 2 is intake camshaft, 3 is exhaust camshaft, 4 is valve lifter, 5 is intake valve, 6 is exhaust valve, 7 is cylinder head, 8 is cylinder block, 9 is Piston connecting rod assembly, 10 is crankshaft.

[0040] The working process of the present inventio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a vehicle engine cam axle, comprising an air inlet cam axle and a discharge cam axle. The air inlet cam axle is disposed with a driving gear and the discharge cam axle is disposed with a gear engaged with the driving gear. The invention uses dual cam axles to improve distribution, reduce impact noise and vibration.

Description

technical field [0001] The invention relates to an automobile engine camshaft. Background technique [0002] Generally, a small displacement car engine adopts a single camshaft structure with a valve rocker arm mounted on the top. Each cylinder has an intake valve and an exhaust valve, and the two valve rocker arms are driven by a single camshaft to open and close according to a certain phase relationship. Although the current single camshaft structure can realize the control of intake valve and exhaust valve, this control often has problems such as poor distribution consistency, large vibration and impact noise. [0003] Therefore, how to solve the problems of poor gas distribution consistency, high vibration and impact noise in the single camshaft structure of the automobile engine is a problem that needs to be solved at present. Contents of the invention [0004] The object of the present invention is to provide an automobile engine camshaft, which adopts a double cam...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01L1/12F01L1/053
Inventor 朱超
Owner 上海华普发动机有限公司