Muffler for vehicle

Abstract

A muffler apparatus for a vehicle may include a speaker chamber that produces sound while vibrating by pressure of an exhaust gas flowing into a muffler housing, wherein the speaker chamber is formed in the muffler housing, the pressure of the exhaust gas being greater than a predetermined value.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority to Korean Patent Application Number 10-2009-0118580 filed Dec. 2, 2009, the entire contents of which application is incorporated herein for all purposes by this reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a muffler for a vehicle that can implement sporty and dynamic sound in accelerating a vehicle.[0004]2. Description of Related Art[0005]Mufflers for vehicles in the related art have a plurality of chambers that are formed by one or more baffles in a closed muffler housing having a predetermined volume, an exhaust inflow pipe through which an exhaust gas flows inside the muffler housing, and an exhaust outflow pipe through which an exhaust gas flows outside the muffler housing, in which the exhaust gas that has flowed inside the muffler housing through the exhaust inflow pipe, flows through an exhaust channel formed in the muffler housing...

AI Technical Summary

Benefits of technology

[0012]Various aspects of the present invention are directed to provide a muffler for a vehicle that is effective in acceleration sound tuning of the vehicle and can improve commercial value of the vehicle by implementing sporty and dynamic sound.

[0017]According to a muffler for a vehicle of the present invention, a valve that is opened / closed by pressure of an exhaust gas is disposed in a front chamber defined by a muffler housing and a baffle inside the muffler housing and a portion of the wall of the front chamber is formed of a thin plate supported by an elastic member to function as a speaker. Therefore, when a vehicle is accelerated, the valve is opened and the thin plate is vibrated by pressure of an exhaust gas and produces sporty and dynamic sound to increase acceleration impression, and noise generated by the exhaust gas can be effectively controlled at the maximum engine power without increasing the back pressure of the exhaust gas. Further, it is possible to implement sound that makes it possible to feel power within a range above a predetermined operation speed of the engine, and to make the inside quiet when the vehicle travels at a constant speed and slowly accelerates.

Problems solved by technology

However, the mufflers having the configuration described above in the related art can only reduce noise or increase the engine power by changing the back pressure while expanding or contracting the exhaust gas channel, but they cannot implement sporty and dynamic sound by tuning at a desired frequency band.

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