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:
Nov. 22, 2006
Kazuo Oosumi, Fujisawa, JP;
Kazuo Oosumi, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
In an exhaust gas purification system provided with an exhaust gas purification device in an exhaust passage of an internal combustion engine, and at the same time, provided with a reductant supply means for supplying a reductant to the upstream side of this exhaust gas purification device, two or more of the oxygen concentration, the CO concentration, and the HC concentration of the exhaust gas detected by an exhaust gas component concentration detecting means are used as control parameters during the reductant supply control when the reductant is supplied into the exhaust gas flowing into the exhaust gas purification device. With this, the supply period and supply amount of the reductant can be optimized, and a decrease of fuel efficiency deterioration and suppression of deterioration of the quality of the components of the exhaust gas flowing into the atmosphere are attempted.