Engine PCV valve

Abstract

The invention provides an engine PCV value applied to the technical field of automobile engine parts. An air inlet (2) of a valve body (1) of the engine PCV valve communicates with a crank case; an air outlet(3) of the valve body (1) communicates with an air inlet manifold; an oil filtering plate (4) is arranged at a position, close to the air inlet (2), in the valve body (1); a lower oil hole (5)is formed in a position, under the oil filtering plate (4), of the valve body (1), and communicates with an oil return hole (6); an oil return ball (7) is arranged at a combining part of the lower oil hole (5) and the oil return hole (6); and the oil return oil (6) communicates with the crank case. The engine PCV valve provided by the invention is simple in structure; and on the basis of ensuringthat a gas in the crank case is filtered before entering the PCV valve, an oil filtration and return mechanism with a large volume and a complicated structure integrated on an engine cylinder cover in the prior art is cancelled, so that the volume of an engine is reduced, the engine can be conveniently arranged wholly, meanwhile, the number of parts is reduced, and the cost of the engine is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of automobile engine components, and more specifically relates to an engine PCV valve. Background technique [0002] The function of the PCV valve (crankcase forced ventilation valve) on the engine is to guide the gas in the crankcase into the intake manifold through the PCV valve to avoid freezing at the throttle, insufficient combustion, and deterioration of emissions, and to prevent blow-by into the atmosphere while preventing oil from deteriorating. The PCV valve in the prior art is mainly composed of a valve body, a spring, an O-ring (sealing function), a plunger (or valve core) and a valve cover. The valve body is provided with threads and a hexagonal boss structure, and a wrench can be used Screw onto the engine head cover. The intake port of the PCV valve is connected to the crankcase, and the air outlet is connected to the intake manifold. This structure can automatically adjust the opening of the...

AI Technical Summary

Problems solved by technology

The disadvantages of this solution are: 1. The oil filter and oil return mechanism is large and complicated, and it is difficult and costly to integrate on the cylinder head cover; 2. The oil filter and oil return mechanism increases the height of the cylinder head cover, resulting in the overall enlargement of the engine. Occupies more car space

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