Exhaust silencing device

Patent metadata

Field	Value
Publication number	US-9228475-B2
Application number	US-201214241512-A
Country	US
Kind code	B2
Filing date	Aug 27, 2012
Priority date	Sep 5, 2011
Publication date	Jan 5, 2016
Grant date	Jan 5, 2016

Abstract

An exhaust silencing device connected to an exhaust system of an engine is provided in which 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 thereof are disposed within the silencer main body along a bottom thereof so that the distances thereof from the lowest part of the bottom are substantially equal, and the opening portion of one outlet pipe is directed further toward the bottom of the silencer main body than is the opening portion of the other outlet pipe. Such exhaust silencing device efficiently discharges to the outside the condensed water building up within the silencer main body so as not to impair an effect in reducing exhaust resistance by providing two outlet pipes that guide the exhaust gas to the outside.

First claim

The invention claimed is:

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 ( 12 ; 112 ),
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.

Assignees

• Mukai Teruaki
• Muto Jun
• Kaneko Yasushi
• Honda Motor Co Ltd
• Yutaka Giken Co Ltd

Inventors

• Mukai Teruaki
• Muto Jun
• Kaneko Yasushi

Classifications

• F01N13/02 Primary

  having two or more separate silencers in series · CPC title

• F01N3/005

  for draining or otherwise eliminating condensates or moisture accumulating in the apparatus (F01N3/02 takes precedence) · CPC title

• F01N2900/1628

  Moisture amount in exhaust apparatus · CPC title

• F01N1/089

  using two or more expansion chambers in series (F01N1/083, F01N1/084, F01N1/086 take precedence) · CPC title

• F01N2470/20

  Dimensional characteristics of tubes, e.g. length, diameter · CPC title