Gas and oil separator

Abstract

The invention provides a gas and oil separator with good applicability and good gas and oil separating effect. The gas and oil separator comprises an air inlet, an air inlet passage communicated with the air inlet, a gas and oil separating cavity, an air outlet passage and an air outlet, wherein the air inlet passage and the gas and oil separating cavity are separated by a clapboard with a through hole; a baffle plate is arranged in the gas and oil separating cavity, is positioned behind the clapboard and faces the through hole of the clapboard; the gas and oil separating cavity is communicated with the air outlet passage below the gas and oil separating cavity through a cylinder in which a spiral air passage is formed; the cylinder is vertically arranged behind the baffle plate; an oil return groove is reserved at the bottom of the air outlet passage; a through hole communicated with the oil return groove is reserved on a gas and oil separating cavity bottom plate; and the air outlet passage is communicated with the air outlet through a PCV valve. Two types of gas and oil separating devices are arranged in the gas and oil separator and sequentially act to separate the gas and oil of the gas and oil separator for two times, so that the problem of poor effect of one-time separation of the traditional gas and oil separator is solved and the gas and oil separating effect is better.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, in particular to an oil-gas separator for automobile engines. Background technique [0002] At present, the oil and gas separators in the engine crankcase ventilation system have many structures, such as labyrinth, vortex, filter, etc. The principles and effects of separating oil and gas are also different, but these oil and gas separators have one thing in common, That is, when the gas in the crankcase passes through the oil-gas separator, only one oil-gas separation can be performed, and a structure of the oil-gas separator is usually only designed for oil and gas within a speed range, and the pressure in the crankcase is within a predetermined range When the speed of oil and gas is within the predetermined range, the effect of oil and gas separation can be expected, but if the pressure in the crankcase changes too much and exceeds the predetermined range, making the speed of oil and...

AI Technical Summary

Problems solved by technology

[0002] At present, the oil and gas separators in the engine crankcase ventilation system have many structures, such as labyrinth, vortex, filter, etc. The principles and effects of separating oil and gas are also different, but these oil and gas separators have one thing in common, That is, when the gas in the crankcase passes through the oil-gas separator, only one oil-gas separation can be performed, and a structure of the oil-gas separator is usually only designed for oil and gas within a speed range, and the pressure in the crankcase is within a predetermined range When the speed of oil and gas is within the predetermined range, the effect of oil and gas separation can be expected, but if the pressure in the crankcase changes too much and exceeds the predetermined range, making the speed of oil and gas too low or too high, it will As a result, the efficiency of oil-air separation decreases, so that more oil will enter the intake manifold through the oil-air separator, and finally enter the combustion chamber to be burned, thus increasing the oil consumption of the engine

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