Patent ID: 9228475
Filing Date: 2016-01-05
CPC Classification: F01N,Y02T

Claim Text:
1. An exhaust silencing device comprising: a silencer main body, an inlet pipe that has at a downstream end thereof an opening portion opening within the silencer main body and that guides exhaust gas from an engine to the silencer main body , and two outlet pipes that have at an upstream end thereof an opening portion opening within the silencer main body and that discharge exhaust gas within the silencer main body to an outside of the silencer main body wherein the two outlet pipes are disposed within the silencer main body along a bottom of the silencer main body so that the distances thereof from the lowest part of said bottom are substantially equal, the opening portion of one of the outlet pipes is directed further toward the bottom of the silencer main body than is the opening portion of the other outlet pipe ( the silencer main body is inclined upwardly from an upstream side of the silencer main body toward a downstream side of the silencer main body in a direction of flow of exhaust gas, the opening portions of said outlet pipes are on the upstream side within the silencer main body, the opening portion of said one outlet pipe is inclined downwardly from the upstream side toward the downstream side, the two outlet pipes are formed into an S-shape and are disposed at opposite sides in a longitudinal direction within the silencer main body, upstream-side outlet pipes of said outlet pipes are disposed along the bottom of the silencer main body so that the distances thereof from the lowest part of said bottom are substantially equal, and the opening portions formed at the upstream end of said one and other outlet pipes are disposed in a central part in the longitudinal direction of the silencer main body.