Clapboard-type cylinder head cover oil-gas separation device

Abstract

The invention discloses a clapboard-type cylinder head cover oil-gas separation device. The device comprises a cylinder head cover (1) and a horizontal clapboard (2) arranged in the cylinder head cover (1), wherein a downward first baffle plate (1a) is arranged on the top of the cylinder head cover (1); an upward second baffle plate (2a) is arranged above the horizontal clapboard (2); the first baffle plate (1a) and the second baffle plate (2a) are arranged in a staggered mode to form a wavelike oil-gas separation channel (3); an inlet (3a) of the oil-gas separation channel (3) is formed at the bottom of the cylinder head cover (1), and an outlet (3b) of the oil-gas separation channel (3) is formed on the side wall of the cylinder head cover (1); an oil return hole (4) is formed on the clapboard (2); and the cylinder head cover (1) and the horizontal clapboard (2) are molded by injecting engineering plastic and connected together through friction welding. The device has the advantages of simple structure, light weight, low cost, high production efficiency, good separation effect and the like, and is easy to mold and manufacture.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to an oil-gas separation device for a cylinder head cover. Background technique [0002] During the working process of the automobile engine, the gas pressure in the crankcase changes continuously with the movement of the piston up and down, so that the mixed oil and gas in the crankcase - the atomized engine oil and the exhaust gas leaked from the engine combustion chamber pass through the engine lubricating oil passage or The gap in the engine transmission system enters the engine cylinder head cover, and then passes through the oil-air separation device on the cylinder head cover and the throttle valve in turn, and finally enters the engine combustion chamber for re-combustion. If the content of engine oil in the mixed oil gas is high, on the one hand, it will cause a large loss of engine oil in the engine crankcase, and on the other hand, the engine oil entering the c...

AI Technical Summary

Problems solved by technology

The oil and gas separation effect of the pinhole separation device is better, but the structure and production process are complicated and the cost is high

The structure of the diaphragm type oil-gas separation device is relatively simple, but the separation effect is not ideal, and the problems of blow-by and excessive fuel consumption are prone to occur. degree of satisfaction; in addition, the cylinder head cover in the diaphragm type oil-gas separation device is made of aluminum alloy, which is made through mold forming, machining, painting and other steps. The diaphragm is composed of a horizontal plate and a vertical plate welded on the horizontal plate , the horizontal plate and the vertical plate are stamped and formed by thin iron sheets, and then the cylinder head cover and the partition are riveted together. The processing technology is very complicated.

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