Patent ID: 8172039

Claim:
A muffler for a vehicle, comprising: a plurality of baffles fixed in a predetermined distance therebetween in the longitudinal direction of a muffler housing in the muffler housing to form a plurality of chambers between the baffles; an exhaust gas inflow pipe having an inlet connected with the muffler through the front of the muffler housing and an outlet connected to one of the chambers inside the muffler housing through the baffles; an intermediate pipe disposed in parallel with the exhaust gas inflow pipe in the muffler housing through the baffles to fluid connect at least two chambers such that an exhaust gas passing through the exhaust gas inflow pipe flows therethrough; and a plurality of exhaust gas outflow pipes having an inlet positioned with an outlet of the intermediate pipe in any one chamber divided by the baffles and an outlet protruding outward through the muffler housing, without passing through the baffles, such that the exhaust gas passing through the intermediated pipe is discharged outside the muffler housing; wherein a plurality of holes is formed at a portion of the exhaust gas inflow pipe in a chamber to which the output of the exhaust gas inflow pipe is not fluidly connected; wherein first, second, and third baffles are fixed at a predetermined distance in the longitudinal direction of the muffler housing in the muffler housing; an internal space of the muffler housing is divided into first, second, third, and fourth chambers by the first, second, and third baffles; the exhaust gas inflow pipe has the inlet protruding outside through the front of the muffler housing and the outlet positioned in the fourth chamber through the first, second, and third baffles; the intermediate pipe has an inlet positioned in the third chamber through the first and second baffles and the outlet positioned in the first chamber; the exhaust gas outflow pipes have the inlet positioned in the first chamber and an output protruding outside through a side of the muffler housing; the plurality of holes is formed at the section from the exhaust gas inflow pipe to the third chamber; and the outlets of the first and second exhaust gas outflow pipes are exposed to the outside, at a lower center of a rear bumper.