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:
Jun. 21, 2011
Filed:
Mar. 13, 2008
Yoshio Tagawa, Anjo, JP;
Keisuke Tashiro, Okazaki, JP;
Seiji Kikuchi, Okazaki, JP;
Takehisa Fujita, Kariya, JP;
Mizuki Anai, Anjo, JP;
Kazuhito Kawashima, Okazaki, JP;
Masahiro Tsuda, Okazaki, JP;
Jian Wang, Okazaki, JP;
Yoshio Tagawa, Anjo, JP;
Keisuke Tashiro, Okazaki, JP;
Seiji Kikuchi, Okazaki, JP;
Takehisa Fujita, Kariya, JP;
Mizuki Anai, Anjo, JP;
Kazuhito Kawashima, Okazaki, JP;
Masahiro Tsuda, Okazaki, JP;
Jian Wang, Okazaki, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An exhaust purification system includes a catalyst disposed in an exhaust path of an internal combustion engine; a fuel pump that supplies fuel to a common rail; an exhaust-side fuel injection valve that is interposed in the exhaust path so as to be located upstream of the catalyst and injects into the exhaust path the fuel supplied from the fuel pump; and estimation section that estimates a clogging degree of an injection port of the exhaust-side fuel injection valve on the basis of fluctuations in pressure of the common rail and those in revolution speed of the internal combustion engine at the time of fuel injection by the exhaust-side fuel injection valve.