Patent ID: 7374016
Filing Date: 2008-05-20
Classification: F01N,Y02T

Abstract:
1. A muffler device connected to a rear end portion of an exhaust pipe that extends from an internal combustion engine of a vehicle, comprising: a muffler main body; an exhaust outlet disposed at a rear portion of the muffler main body, opening outwardly and laterally of the vehicle; and a muffler cover mounted on an outer tube of the muffler main body, the muffler cover serving as a muffler side cover, wherein the muffler side cover includes an formed by a changing part of the muffler side cover, an outside air introduction portion being formed along a rear section of the muffler side cover that overlaps the muffler main body and extending radially inward part way toward the muffler main body, and wherein a rear end of the outside air introduction portion includes an air intake guide shaped portion for guiding ambient air to the exhaust outlet, wherein the air intake guide shaped portion has a length extending in a fore-aft direction, a width that increases continuously in a direction from a front end to a rear end thereof, and a depth that increases in a radial direction toward the rear end relative to the front end thereof.