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:
Jun. 21, 2011
Filed:
Feb. 14, 2006
Daiji Nagaoka, Fujisawa, JP;
Masashi Gabe, Fujisawa, JP;
Daiji Nagaoka, Fujisawa, JP;
Masashi Gabe, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
In regeneration control of an exhaust gas purification system () equipped with NOx occlusion reduction catalyst (), a decision is made whether operating state of an engine is in a first engine operating range where the exhaust gas temperature is lower than a predetermined mode judgment temperature. If yes, EGR rich control is performed. Otherwise, injection rich control in exhaust pipe is performed. When EGR rich control is performed, a decision is made whether a vehicle is under acceleration or not. If a decision is made that the vehicle is under acceleration, regeneration control is postponed until that decision ends. This enables rich control for regeneration the NOx occlusion reduction catalyst (), while avoiding deterioration in drivability (comfortableness) during acceleration of the vehicle.