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Valve chamber cover cap

A technology of valve chamber and cover, applied in the field of valve chamber cover, which can solve the problems of large space occupation, many parts assembly sealing surfaces, dispersion, etc., and achieve the effect of convenient general layout, realization of coordination and easy assembly

Active Publication Date: 2009-05-20
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, at present, most of the domestic valve chamber covers are only equipped with a labyrinth, while the oil-gas separator and the PCV valve are set independently, which leads to the following technical problems: (1) Comparing parts design and supplier development Scattered, difficult to assemble and ensure the matching size between them, and takes up a lot of space; (2) There are many sealing surfaces in the assembly of multiple parts, which is more likely to cause oil and gas leakage

Method used

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Embodiment Construction

[0026] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0027] attached figure 1 It is a top view of the valve chamber cover. The oil-air mixture enters the valve chamber cover labyrinth 2 through the inlet 1, and the pre-separated mixture gas enters the oil-air separator 3 integrated on the cover for separation. The separated oil passes through the oil-gas The U-shaped pipe at the bottom of the separator drips back to the moving parts such as the camshaft under the valve chamber cover, and then the gas enters the PCV valve 6 through the connecting pipe 4 with a tortuous partition channel inside, and then passes through the crankcase on the top of the cover The vent pipe 7 enters the engine intake manifold. The path of the fuel-air mixture in the valve cover is completed.

[0028] The plastic valve chamber cover is used to optimize the orig...

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Abstract

The invention relates to a valve chamber cover. A labyrinth on the valve chamber cover, a separate oil-air separator and a separate PCV valve are integrated together and are placed on the valve chamber cover; therefore, part design process and supplier development can be centralized, the trouble of difficult assembly can be avoided and fitting sizes among parts can be ensured. Moreover, the valve chamber cover solves the problems of greater space occupation of dispersed parts, more assembly sealing surfaces and easy occurrence of oil-gas leakage.

Description

technical field [0001] The invention relates to a valve chamber cover, in particular to a plastic valve chamber cover integrating a PCV valve and an oil-gas separator. Background technique [0002] Since the piston will leak a certain amount of air leakage into the crankcase during its movement, and the oil in the oil pan will evaporate, as the number of engine working cycles increases, the gas pressure inside the crankcase will gradually increase, which will It will lead to oil and gas leakage in the crankcase, and it will also cause danger as the pressure rises; because the pressure of the combustion chamber inside the valve chamber cover is very high, the gas will also be strung up to the inside of the valve chamber cover at the valve guide; plus The inside of the upper valve chamber will generate oil vapor due to the increase of temperature, which will further increase the pressure inside the valve chamber cover. In this comprehensive situation, the crankcase ventilation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F7/00F01L1/46F01M13/04
Inventor 张侠
Owner CHERY AUTOMOBILE CO LTD