Patent ID: 8360200

Claim:
A muffler, comprising: a muffler body having a muffler chamber formed therein; a baffle accommodated in the muffler chamber and disposed in a vicinity of an exhaust gas entry port of the muffler body, the baffle having a first abutting portion which abuts an inner surface of the muffler chamber, a second abutting portion which is opposed to the first abutting portion and which abuts an opposed inner surface of the muffler chamber, and a rise portion that is integrally formed with the baffle and extends from the first abutting portion to the second abutting portion; and a guide portion that changes a flow of an exhaust gas that enters from the exhaust gas entry port, wherein the guide portion is integrally provided to the baffle by a cut-and-raise processing of a portion of the baffle, and the guide portion has a thickness that is greater than a thickness of the muffler body, wherein bolt holes are provided on the opposing inner surfaces of the muffler chamber, the bolt holes including bar ring portions formed on peripheries thereof, and wherein the bar ring portions are engagable with penetration holes formed in the first and second abutting portions of the baffle such that the baffle is correctly positioned in the muffler chamber when the bar ring portions and the penetration holes are engaged.