Improved structure of engine oil-gas separator

Abstract

The invention relates to an improved structure of an engine oil-gas separator. The improved structure comprises a cylinder cover shield, wherein oil-gas separating chambers are arranged on the inner surface of the cylinder cover shield; the oil-gas separating chambers comprise the first oil-gas separating chamber positioned on the air suction side and the second oil-gas separating chamber positioned on the air discharge side; the first oil-gas separating chamber adopts a four-stage separating structure; the second oil-gas separating chamber adopts a three-stage separating structure. Through the adoption of the four-stage separating structure and the addition of a cyclone separating plate group structure, when oil-gas mixed gas flows through the cyclone separating plate group, airflow can generate vortex due to the arrangement of a curve plate; as the densities of oil and gas are different, the oil and the gas are separated under the action of the vortex, separated large oil drops directly fall on oil baffles, and separated small oil drops hit against the surfaces of cyclone separating plates and flow towards orifice plates along the surface of the cyclone separating plates, so that the oil-gas separating effect is improved.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular to an improved structure of an engine oil-gas separator. Background technique [0002] During the operation of the engine, a small amount of gas will escape into the crankcase from the gap between the cylinder wall and the piston ring and the gap between the piston and the piston ring, and the blow-by gas will take away the oil on the surface of the piston and cylinder wall, It enters the combustion chamber through the intake system and burns again. But since the oil doesn't burn completely, it can have a negative impact on emissions. The oil must therefore be separated from the blow-by gas in order to comply with emission regulations. [0003] Existing gasoline engines adopt a closed breathing system to meet the requirements of emission regulations. The early engine ventilation system adopts the structure of an external oil-gas separator, which leads to complex pipelines and bloa...

AI Technical Summary

Problems solved by technology

[0008] Existing technologies cannot meet the requirements of higher emission limits, which directly leads to the inability of the entire vehicle to be sold on the market

In order to overcome the above problems, the existing technology meets the emission standards by using the engine cylinder head shield and independent oil and gas separator, which not only leads to complicated pipelines, bloated layout, but also increases the cost too much

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