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:
Nov. 15, 2011
Filed:
Apr. 09, 2007
Masashi Gabe, Fujisawa, JP;
Daiji Nagaoka, Fujisawa, JP;
Masashi Gabe, Fujisawa, JP;
Daiji Nagaoka, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
An exhaust gas purification system provided with an exhaust gas purification device, such as a NOx occlusion-reduction catalyst, in an exhaust passage of an internal combustion engine for purifying exhaust gas when the air-fuel ratio of the exhaust gas is in a lean state, and recovering purification ability when in a rich state. The system prevents highly dense, uncombusted fuel from acting as a binder that causes soot, together with the uncombusted fuel, to clog an EGR cooler in an EGR passage. An uncombusted fuel adsorption device for adsorbing uncombusted fuel is provided upstream of the EGR cooler for adsorbing uncombusted fuel passing through the EGR passage during a rich control.