Oil-gas separation system of floating type variable cross-section impeller

Abstract

The invention discloses an oil-gas separation system of a floating type variable cross-section impeller. The oil pan and the centrifugal oil-gas separator are installed at the bottom of a crankcase of the engine, an oil inlet of the oil-gas separator is communicated with an oil outlet of the engine through a high-pressure oil inlet pipe, and an oil outlet of the oil-gas separator is communicated with an oil inlet of the oil pan through an oil return pipe. An air inlet of the oil-gas separator is communicated with an air outlet of the engine through an air inlet pipe, one end of the engine oil connecting pipe is communicated with a main oil duct of the engine, the other end of the engine oil connecting pipe is connected with a rotating shaft of the oil-gas separator impeller in a sliding mode, and blades of the oil-gas separator impeller are variable-section blades. The variable cross-section impeller structure capable of floating up and down is added, so that the variable cross-section impeller of the oil-gas separator can float up and down according to engine oil pressure and rotating speed of an engine, rotating speed control over the oil-gas separator is achieved, the service life of the oil-gas separator is prolonged, and the separation efficiency of the oil-gas separator is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, and in particular relates to an oil-gas separation system of a floating variable-section impeller. Background technique [0002] When the engine is working, the high-pressure combustible mixture in the combustion chamber will more or less leak into the crankcase through the gap between the piston group and the cylinder, causing blow-by. The components of blow-by gas are unburned fuel gas, water vapor and exhaust gas, etc., which will dilute the engine oil, reduce the performance of the engine oil, and accelerate the oxidation and deterioration of the engine oil. Moisture condenses in the engine oil, which will form sludge and block the oil circuit; the acid gas in the exhaust gas will be mixed into the lubrication system, which will cause corrosion and accelerated wear of engine parts; blow-by gas will also cause the pressure of the crankcase to be too high and damage the crankcase. S...

AI Technical Summary

Problems solved by technology

However, if the impeller speed of the oil and gas separator is too fast, it will affect the life of the oil and gas separator, and if the speed of the impeller is too slow, it will affect the efficiency of oil and gas separation.

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