Valve chamber cover vibration damping connection device

A valve chamber and vibration connection technology, which is applied to valve devices, non-rotating vibration suppression, engine components, etc., can solve the problems of gasket life impact and NVH impact, and achieve the effect of reducing NVH and vibration

Inactive Publication Date: 2008-07-02
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valve chamber cover is greatly affected by the vibration of the engine, coupled with its own self-vibration, so that the valve chamber cover has a greater impact on the NVH of the whole machine, and the traditional mounting bolts have a great impact on the life of the gasket

Method used

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  • Valve chamber cover vibration damping connection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 in figure 1 Among them, a damping connection device for a valve chamber cover, which includes a fastening bolt 1 and a valve chamber cover gasket 4 for connecting a cylinder head 5 and a valve chamber cover 6 . A rubber damping unit 3 is placed between the nut of the bolt 1 and the valve chamber cover 6 .

Embodiment 2

[0012] Embodiment 2 A bushing 2 is sleeved on the bolt 1, and the bushing 2 is covered with a rubber damping unit 3; sum of thicknesses. To ensure that the rubber damping unit 3 and the valve chamber cover gasket 4 have a certain amount of compression. The vibration damping unit 3 can be a part connected in one body. All the other are with embodiment 1.

[0013] After the ordinary hexagon flange bolt 1 is tightened, the vibration of the valve chamber cover 6 itself is gradually eliminated by the buffering and absorption of the two rubber parts of the rubber damping unit 3 and the valve chamber cover gasket 4 . Noise due to vibration of the valve cover itself is reduced. At the same time, the vibration of the engine operation is greatly reduced by the amount of the vibration transmitted to the valve cover due to the absorption of the valve cover gasket 4 between the cylinder head 5 and the valve cover 6 . The occurrence of resonance between the valve cover 6 and the cylinde...

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PUM

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Abstract

A valve chamber cover vibration-reduction and connection device comprises a fastening bolt connecting a cylinder head with a valve chamber cover and a washer of the valve chamber cover. A rubber vibration-reduction unit is arranged between the screw cap of the bolt and the valve chamber cover. The bolt is sheathed with a bush, and the outer casing of the bush is provided with the rubber vibration-reduction unit; the height of the bush is less than the total thickness of the rubber vibration-reduction unit, the valve chamber cover and the washer thereof, thereby ensuring the rubber vibration reduction unit and the washer of the valve chamber cover have certain compression. In virtue of only adopting the rubber vibration reduction unit in a simple structure, vibration of the valve chamber cover is greatly reduced and the washer thereof is effectively protected. By adopting a vibration-reduction bolt unit as a buffer between the cylinder head and the valve chamber cover, integral NVH is reduced.

Description

technical field [0001] The invention relates to a vibration-damping connection device for a cover, in particular to a vibration-damping connection device for an automobile engine valve chamber cover. Background technique [0002] At present, the installation of the engine valve chamber cover generally adopts common bolts to install. This installation method only plays the role of fixing and tightening. The cushion between the valve cover and the cylinder head can only be provided by the valve cover gasket. The valve cover is greatly affected by the vibration of the engine, coupled with its own natural vibration, so that the valve cover has a greater impact on the NVH of the whole machine, and the traditional mounting bolts have a great impact on the life of the gasket. Therefore, there is an urgent need for a new cover damping connection device to reduce the vibration of the valve chamber cover and effectively protect the valve cover gasket. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): F01L1/46F02F7/00F16F15/08
Inventor 张文权宋江龙陈晓济张德定
Owner CHERY AUTOMOBILE CO LTD
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