Patent ID: 8528693

Claim:
A muffler apparatus for a vehicle, comprising: a muffler housing that has first and fourth chambers formed at front and rear portions therein and second and third chambers formed between the first and fourth chambers in sequence; an exhaust gas intake pipe that is inserted in the muffler housing through the front portion of the muffler housing, with an end portion thereof being disposed in the third chamber; and exhaust gas discharge pipes that are connected with the second chamber and discharge an exhaust gas to the outside of the muffler housing; wherein first, second, and third baffles that divide the inside of the muffler housing into the first, second, third, and fourth chambers are fixed at predetermined distances in the front-rear direction in the muffler housing; wherein a plurality of air-through holes are formed through the first, second, and third baffles, respectively; and wherein the air-through holes are uniformly disposed throughout the second baffle so that the exhaust gas in the third chamber is uniformly distributed and flows into the second chamber when flowing into the second chamber through the air-through holes of the second baffle and the exhaust gas flowing in the second chamber is uniformly divided into the exhaust gas discharge pipes and discharged outside.