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:
Feb. 12, 2013
Filed:
Oct. 16, 2007
Miwa Hayashi, Saitama, JP;
Takeshi Miyamoto, Saitama, JP;
Fumiyasu Kurogi, Saitama, JP;
Bosch Corporation, Tokyo, JP;
Abstract
The invention provides an exhaust gas purification apparatus for an internal combustion engine which evenly diffuses a reducing agent over an entirety of the exhaust gas which flows into an NOcatalyst disposed on the downstream side of thereof. The exhaust gas purification apparatus includes an NOcatalyst disposed in an exhaust gas passage of an internal combustion engine, and a reducing agent injecting unit for injecting the reducing agent into the exhaust gas passage which is on an upstream side of the NOcatalyst. A narrowed portion, in which a cross-sectional area of a flow passage is smaller than a cross-sectional area of the exhaust gas passage and of the NOcatalyst, is provided on a downstream side of an injecting position by the reducing agent injecting unit and the upstream side of the NOcatalyst, and a reducing agent diffusing device is provided on the narrowed portion.