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Closed Crankcase Ventilation System for Ignition Supercharged Engines

A supercharged engine and crankcase ventilation technology, which is applied in crankcase ventilation, engine components, machines/engines, etc., can solve the problems of inability to drive the separation efficiency of the gas-driven oil-gas separator, and achieve improved reliability, high separation efficiency, The effect of low gas oil content

Active Publication Date: 2020-11-10
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the actual engine is idling or the supercharger is not working, the pressure behind the intercooler is atmospheric pressure, which cannot drive the air-driven oil-gas separator to ensure high separation efficiency.

Method used

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  • Closed Crankcase Ventilation System for Ignition Supercharged Engines
  • Closed Crankcase Ventilation System for Ignition Supercharged Engines

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Embodiment Construction

[0015] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0016] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0017] Such as figure 2 As shown, the specific structure of the closed crankcase ventilation system of the ignited supercharged engine according to the preferred embodiment of the present invention includes: the engine cylinder head cover 21, the gas-driven oil-gas separator 22, and the supercharger compressed air system and the air compressor system arranged in parallel. Compressor compressed air system, when the superch...

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Abstract

The invention discloses an ignition-type supercharged engine closed crankcase ventilation system. The ignition-type supercharged engine closed crankcase ventilation system comprises an engine cylinderhead cover, a gas drive oil-gas separator, a supercharger gas-compression system and an air compressor air-compression system, wherein the supercharger gas-compression system comprises an air filter,a gas compressor, an intercooler and a one-way check valve, a rear pipe of the air filter communicates with the gas drive oil-gas separator through a second pipeline; an inlet pipe of the gas compressor communicates with the air filter; the intercooler communicates with the gas drive oil-gas separator through a third pipeline; and the air compressor air-compression system comprises an air compressor, an air tank and a pressure regulating valve, the air compressor communicates with the air inlet end of the air tank through a fourth pipeline, and the air outlet end of the air tank communicateswith the gas drive oil-gas separator through a fifth pipeline. Through the ignition-type supercharged engine closed crankcase ventilation system, it can be ensured that the oil-gas separator has the high separation efficiency, and thus the reliability of the supercharger gas compressor is improved.

Description

technical field [0001] The invention relates to the field of engines, in particular to a closed crankcase ventilation system for an ignition-type supercharged engine. Background technique [0002] Harmful emissions from engines are a major source of air pollution. With the increasing importance of environmental protection, the goal of reducing harmful emissions from engines has become an important direction for engine development in the world today. At the same time, with the release of the GB17691-2018 National VI regulations, in order to meet the requirements of the GB17691-2018 C.5.11.2 that the crankcase pressure of the ignition engine is not greater than the atmospheric pressure, a new closed crankcase ventilation is required system to meet regulatory requirements. [0003] The current closed crankcase ventilation system based on gas-driven oil-gas separator is as follows: figure 1 As shown, the crankcase gas generated by the operation of the engine 11 passes through ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M13/02F01M13/04F02M35/10
Inventor 覃玉峰宁德忠陈欢
Owner GUANGXI YUCHAI MASCH CO LTD
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