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VVT oil passage sealing structure of camshaft

A technology of sealing structure and camshaft, which is applied to the sealing device of the engine, engine components, machine/engine, etc., can solve the problems of setting the second gear camshaft, etc., and achieve the effect of reducing the loss.

Active Publication Date: 2016-06-15
宝鸡吉利发动机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a camshaft VVT oil passage sealing structure capable of laying out the oil passage on the camshaft supported by the bearing, which solves the problem that the existing first-gear camshaft can only arrange the VVT ​​oil passage on the camshaft supported by the bearing. Problems setting the camshaft in second gear

Method used

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  • VVT oil passage sealing structure of camshaft
  • VVT oil passage sealing structure of camshaft
  • VVT oil passage sealing structure of camshaft

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment one, see figure 1 , a camshaft VVT oil passage sealing structure, including an engine cover 1, a bearing cover 2 and a camshaft 3. The engine cover 1 and the bearing cap 2 are sealed and butted together to form a camshaft mounting hole 4 . The camshaft 3 passes through the camshaft mounting hole 4 . The camshaft 3 is disconnected from the camshaft mounting hole 4. The camshaft 3 is supported in the camshaft installation hole 4 through the bearing 31 to realize the rotational connection with the camshaft installation hole 4 . Bearing 31 is a ball bearing. Two VVT oil passages 32 are arranged on the peripheral surface of the camshaft 3 . Both sides of each VVT oil passage 32 are provided with reversing grooves 33 . The reversing groove 33 is located on the peripheral surface of the camshaft 3 . The reversing groove 33 is an annular groove extending along the circumferential direction of the camshaft 3 . Each reversing groove 33 is provided with an oil de...

Embodiment 2

[0023] Embodiment two, the difference with embodiment one is:

[0024] see figure 2 , The oil slinger ring 5 is enclosed by a first segment 51 and a second segment 52 sealed butted together. The first segment 51 and the engine cover 1 are sealed and fixed together in an integral structure (specifically, a casting). The second section 52 and the bearing cover 2 are sealed and fixed together in an integral structure (also a casting).

Embodiment 3

[0025] Embodiment three, the difference with embodiment one is:

[0026] see image 3 , The outer peripheral surface of the oil deflector ring 5 is provided with an adsorption ring 6 . The adsorption ring 6 extends circumferentially along the oil deflector ring 5 . The radially outer end of the oil slinger ring 5 is adsorbed to the camshaft installation hole 4 through the adsorption ring 6 and is sealed and affixed together with the camshaft installation hole 4 . The adsorption ring 6 and the oil retaining ring 5 are integrally structured. The bearing cap 2 is provided with a vacuum breaking channel 7 . The vacuum breaking channel 7 communicates with all the adsorption rings 6 inside. The vacuum breaking channel 7 is detachably connected with a sealing cover 71 . It is also possible that the vacuum breaking channel 7 is arranged on the engine cover 1 . When the oil deflector ring 5 needs to be separated from the engine cover 1 and the bearing cover 2, the sealing cover 7...

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Abstract

The invention relates to a camshaft with VVT oil passages. A VVT oil passage sealing structure of the camshaft comprises an engine cover, a bearing cover, the camshaft and a bearing, wherein two VVT oil passages are formed in the circumferential surface of the camshaft, the engine cover and the bearing cover define a camshaft mounting hole in an enclosing way, the camshaft is supported in the camshaft mounting hole by the bearing, the camshaft is disconnected from the camshaft mounting hole, annular commutating grooves which are positioned in the circumferential surface of the camshaft and extend along the circumferential direction of the camshaft are formed in both sides of each VVT oil passage, oil retainers are arranged in the commutating grooves, the oil retainers are in clearance fit with the commutating grooves, the radial outer ends of the oil retainers protrude from the commutating grooves and are fixedly connected with the camshaft mounting hole in a sealing mode. The invention provides the VVT oil passage sealing structure of the camshaft, which is capable of arranging the oil passages in the camshaft supported by the bearing, and the problem that the VVT oil passages can only be formed in the second camshaft when the existing first camshaft is supported by the bearing is solved.

Description

technical field [0001] The invention relates to a camshaft provided with a VVT oil passage, in particular to a camshaft VVT oil passage sealing structure. Background technique [0002] The camshaft is a component in a piston engine. Its function is to control the opening and closing of the valve. Since the valve movement law is related to the power and running characteristics of an engine, the camshaft design plays a very important role in the engine design process. In the Chinese patent application number 2008101240990, the publication date is February 8, 2009, and the patent document titled "A Camshaft of an Automobile Engine" promptly switches a kind of existing structure provided with VVT (VariableValveTiming, variable configuration Gas timing system, camshaft containing VVT actuator and OCV valve) oil passage. The first gear of the camshaft bears a large bending load, and the friction consumption is relatively large. In order to effectively reduce the friction consum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/047F02F11/00
CPCF01L1/047F01L2001/0476F02F11/00
Inventor 熊银超周飞赵旭鹏田俊鹏袁爽沈源王瑞平
Owner 宝鸡吉利发动机有限公司