VARIABLE RESONATOR STRUCTURE OF A VEHICLE SILENCER, FOR VARYING THE GOAL FREQUENCY OF THE EXHAUSTING SOUND ACCORDING TO RPM OF AN ENGINE AND THE EXHAUST PRESSURE BY INSTALLING AN AREA CHANGER IN A RESONATOR NECK

摘要

PURPOSE: A variable resonator structure of a vehicle silencer is provided to effectively reduce the exhausting sound according to rpm of an engine because the reducing goal frequency of resonator is consecutively changed according to the noise frequency component changed according to rpm of an engine.;CONSTITUTION: A variable resonator structure of a vehicle silencer comprises a resonator(30), a resonator neck(31), and an area changer(40). The resonator is formed at both sides of an exhaust pipe(20) installed within a silencer body(10). The resonator neck is formed in the outer circumference of the exhaust pipe. The area changer is installed in the resonator neck and changes the area of the resonator neck according to the RPM of an engine and the exhaust pressure.;COPYRIGHT KIPO 2010