Patent ID: 7748404
Filing Date: 2010-07-06
Classification: F02D,F16K,Y10T

Abstract:
1. An exhaust valve assembly comprising: an exhaust tube defining an exhaust flow path, said exhaust tube including a slot that receives a housing; a valve body positioned within said exhaust flow path; a shaft fixed to said valve body, said valve body being pivotable by said shaft between a valve open position and a valve closed position, and said shaft having a shaft body extending between first and second collars, said shaft body being defined by a first diameter and said first and said second collars being defined by respective second and third diameters, and wherein said second and said third diameters are greater than said first diameter, and wherein said housing encloses said shaft body and said first and said second collars; at least one bushing that rotatably supports said shaft, and wherein said shaft and said at least one bushing are mounted within said housing such that an outer edge portion of said valve body is fixed to said shaft; and a spring coupled to said shaft wherein said spring exerts a torsional load on said shaft to bias said shaft toward a valve closed position and exerts an axial load on said shaft to seal said shaft against said at least one bushing.