Mounting structure of variable valve for dual exhaust system

Abstract

A mounting structure of a variable valve for a dual exhaust system may include a muffler, at a front end of which is connected a first inlet pipe, and at a rear end of which is connected a first outlet pipe, and a Helmholtz Resonator, at the front end of which is connected a second inlet pipe, and at a rear end of which is connected a second outlet pipe, in which a variable valve which is opened and closed by an Electronic Control Unit (ECU) of a car is disposed on the second outlet pipe connected to the Helmholtz Resonator.

What is claimed is: 
     
         1 . A mounting structure of a variable valve for a dual exhaust system comprising:
 a muffler, at a front end of which is connected a first inlet pipe, and at a rear end of which is connected a first outlet pipe; and   a Helmholtz Resonator, at the front end of which is connected a second inlet pipe, and at a rear end of which is connected a second outlet pipe;   wherein a variable valve which is opened and closed by an Electronic Control Unit (ECU) of a car is disposed on the second outlet pipe connected to the Helmholtz Resonator.   
     
     
         2 . The mounting structure of the variable valve for the dual exhaust system of  claim 1 , wherein the Helmholtz Resonator is constructed to have relatively small size than the muffler so that the muffler and the Helmholtz Resonator are arranged asymmetrically. 
     
     
         3 . The mounting structure of the variable valve for the dual exhaust system of  claim 1 , wherein the Helmholtz Resonator comprises:
 a housing, into an inside of which exhaust gas flows and a rear end of which is opened;   a first baffle arranged transversely in the housing;   a second baffle combined transversely to close the rear end of the housing; and   a resonant chamber partitioned by the first baffle and the second baffle.   
     
     
         4 . The mounting structure of the variable valve for the dual exhaust system of  claim 1 , wherein, at a time of low load travel of the car, the second outlet pipe is closed by the variable valve and the exhaust gas flows in the second inlet pipe and an inside of the Helmholtz Resonator so that a booming noise of the car is significantly reduced. 
     
     
         5 . The mounting structure of the variable valve for the dual exhaust system of  claim 1 , wherein, at a time of high load travel of the car, the second outlet pipe is opened by the variable valve and the exhaust gas is discharged to an outside of the car through the first outlet pipe and the second outlet pipe.