Air flow control one-way valve for engine
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The invention discloses an air flow control one-way valve for an engine. The air flow control one-way valve for the engine comprises an upper housing, a lower housing, a valve plug, a gasket and a spring, wherein one end of the upper housing is inserted into one end of the lower housing, and the two ends are connected with each other by a screw thread or a welding process; air stream flows inwardfrom the upper housing and flows outward from the lower housing; the end face of a connection end of the upper housing is provided with a circle of annular bosses and a circle of valve plug guide brackets that can be ventilated along a radial direction; the annular bosses are positioned in a ring encircled by the valve plug guide brackets; the end face of the valve plug facing towards the annularbosses is provided with the gasket; the valve plug is arranged in the valve plug guide bracket; the gasket is pressed onto the annular boss; the spring is arranged between the other end face of the valve plug and an inner wall boss of the lower housing, and the end face of the valve plug provided with the spring is provided with a circuit of limiting brackets; and the heights of the limiting brackets are greater than the solid height of the spring. The one-way valve can bear greater working differential pressure, has reliable use and simple structure and can well satisfy the demands of a supercharged engine.