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Two-way gas flow control valve and ventilation system of crankcase of engine

A crankcase ventilation and gas flow technology, which is applied in crankcase ventilation, engine components, machines/engines, etc., can solve the problem of high negative pressure in the crankcase of a supercharged engine, avoid oil leakage, facilitate manufacturing and processing, and simple structure Effect

Active Publication Date: 2011-08-10
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a two-way gas flow control valve and an engine crankcase ventilation system to solve the problem of excessive negative pressure in the crankcase of a supercharged engine

Method used

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  • Two-way gas flow control valve and ventilation system of crankcase of engine
  • Two-way gas flow control valve and ventilation system of crankcase of engine
  • Two-way gas flow control valve and ventilation system of crankcase of engine

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Embodiment Construction

[0025] 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.

[0026] For an example of a crankcase ventilation system implemented in a turbocharged engine, see Figure 1 , is a schematic diagram of the two-way gas flow control valve of the present invention; Figure II , is a structural schematic diagram of the two-way gas flow control valve of the present invention, including an upper casing 1, a diaphragm 2, and a lower casing 3; Figure three , a schematic diagram of the layout of the crankcase ventilation system of a turbocharged engine, which shows the crankcase 4, the valve chamber cover 5, the PCV valve 6, the intake manifold 7, the supercharger 8, the air filter 9, and the two-way gas flow control Valve 10 etc. The above-mentioned components are connected by peripheral pipelines to form a closed-loop control.

[0027] The specific princi...

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Abstract

The invention relates to a two-way gas flow control valve and a ventilation system of a crankcase of an engine, the two-way gas flow control valve is arranged in the ventilation system of the crankcase and comprises a housing which consists of an upper housing and a lower housing and a film arranged in the housing, and the two-way gas flow control valve separately circulates gas in forward direction and reverse direction under the action of different pressures and keeps the pressure balance of the crankcase.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a two-way gas flow control valve and an engine crankcase ventilation system. Background technique [0002] At present, PCV valves and check valves are used in the crankcase ventilation systems of many engines at home and abroad to control the crankcase pressure to make it meet the target requirements. The PCV valve is the main component for adjusting the pressure of the crankcase ventilation system, and the function of the check valve used is mainly to prevent gas backflow, or to prevent the crankcase gas from passing through a certain passage. For naturally aspirated engines, the adjustment of the crankcase pressure generally relies solely on the PCV valve, and the check valve is rarely used. For supercharged engines (mechanical, turbo, etc.), the adjustment of the crankcase pressure depends on the PCV valve and the auxiliary function of the check valve. Since there is a boost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M13/00
Inventor 左亚洲
Owner CHERY AUTOMOBILE CO LTD
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