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:
Jan. 29, 2008
Filed:
Sep. 08, 2005
Kazuharu Tochikawa, Kariya, JP;
Makoto Saito, Okazaki, JP;
Shigeto Yahata, Obu, JP;
Tsukasa Kuboshima, Okazaki, JP;
Kanehito Nakamura, Ichinomiya, JP;
Kazuharu Tochikawa, Kariya, JP;
Makoto Saito, Okazaki, JP;
Shigeto Yahata, Obu, JP;
Tsukasa Kuboshima, Okazaki, JP;
Kanehito Nakamura, Ichinomiya, JP;
Denso Corporation, Kariya-city, Aichi-pref., JP;
Abstract
In an exhaust gas purifying apparatus for a diesel engine having a diesel particulate filter provided in an exhaust pipe, a pressure loss at the filter is detected. An accumulated amount of diesel particulates in the filter is calculated based on the pressure loss and a map for a relationship between the pressure loss and the accumulated amount. A compulsory re-generating operation is carried out when the calculated accumulated amount reaches at a predetermined threshold value, which is decreased to a smaller value depending on a combustion amount of the diesel particulates which are combusted and removed from the filter as a natural re-generating operation.