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:
Apr. 01, 2008
Filed:
Jun. 29, 2005
Applicants:
Shinichiro Okugawa, Toyota, JP;
Kazuo Kobayashi, Nagoya, JP;
Inventors:
Shinichiro Okugawa, Toyota, JP;
Kazuo Kobayashi, Nagoya, JP;
Assignee:
Denso Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an exhaust gas purifying apparatus for a diesel engine having a diesel particulate filter (DPF) provided in an exhaust pipe, a temperature of the DPF is indirectly detected (presumed) to prevent an over-heat of the DPF during a re-generation operation thereof. For that purpose, the DPF is hypothetically divided into multiple cells, the temperature at the respective cells is presumed based on a heat budget of the cell, and the maximum temperature among those multiple presumed temperatures is controlled to be lower than a predetermined value.