The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1999
Filed:
Oct. 22, 1996
Kazuhisa Kuroshita, Inai-Cho, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Abstract
An exhaust apparatus for an engine is provided, which is capable of efficiently sucking in secondary air for a catalyst by utilizing an ejector (entraining) effect caused by the exhaust gases and which has a simple and inexpensive structure. Exhaust gases from the engine are introduced into a main muffler body, are expanded and muffled by passage through a plurality of silencer chambers, and are also passed through a catalyst and scrubbed thereby in a state in which they are mixed with secondary air introduced from the exterior. A secondary air introduction pipe for introducing secondary air is provided in a first-stage silencer chamber. A mixing pipe is provided into which are introduced the secondary air introduced from the secondary air introduction pipe and the exhaust gases from the first-stage silencer chamber. An ejector (entraining) portion for sucking in the secondary air from the secondary air introduction pipe is formed from an outlet of the secondary air introduction pipe and an inlet of the mixing pipe.