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:
Feb. 03, 2009
Filed:
Mar. 10, 2005
Tatsuhisa Yokoi, Toyota, JP;
Yasuhiko Otsubo, Toyota, JP;
Shigehiro Matsuno, Toyota, JP;
Hiroki Matsuoka, Susono, JP;
Tatsuhisa Yokoi, Toyota, JP;
Yasuhiko Otsubo, Toyota, JP;
Shigehiro Matsuno, Toyota, JP;
Hiroki Matsuoka, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An exhaust purifying apparatus for an internal combustion engine having a DPNR converter (), a fuel adding device (), and an electronic control device () is provided. The DPNR converter () is located in an exhaust passage () of the internal combustion engine (). The DPNR converter () traps particulate matter in exhaust gas. The fuel adding device () adds fuel to exhaust as that passes through the DPNR converter (). The electronic control device () estimates a combustion rate of particulate matter in the DPNR converter () in a state where the fuel adding device () adds fuel to the exhaust gas. Based on the estimated combustion rate, the electronic control device () sets a manner of adding fuel by the fuel adding device (). As a result, the exhaust purifying apparatus suppresses excessive temperature increase of a DPNR converter () to which fuel is added.