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. 05, 2013
Filed:
Feb. 17, 2009
Daisuke Sato, Wako, JP;
Hidetaka Maki, Wako, JP;
Eisaku Gosyo, Wako, JP;
Atsushi Izumiura, Wako, JP;
Jun Iida, Wako, JP;
Daisuke Sato, Wako, JP;
Hidetaka Maki, Wako, JP;
Eisaku Gosyo, Wako, JP;
Atsushi Izumiura, Wako, JP;
Jun Iida, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An exhaust gas purifying apparatus for an internal combustion engine having a particulate filter provided in an exhaust system of the engine. Regeneration control is performed of burning particulates accumulated in the particulate filter. An oxygen concentration in exhaust gases flowing into the particulate filter is detected, and a flow rate of oxygen flowing into the particulate filter is calculated according to the detected oxygen concentration. An inflowing oxygen amount is calculated by integrating the oxygen flow rate when performing regeneration control. It is determined that an abnormality has occurred if the inflowing oxygen amount at a time when regeneration control ends is equal to or less than a predetermined amount.