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:
May. 11, 2010
Filed:
Apr. 20, 2006
Hiroshi Tanada, Nagoya, JP;
Yasuyuki Hatsuda, Okazaki, JP;
Takehisa Fujita, Kariya, JP;
Takaharu Hashimoto, Nagoya, JP;
Keisuke Tashiro, Okazaki, JP;
Mizuki Anai, Anjo, JP;
Mitsutaka Kojima, Okazaki, JP;
Masayuki Yamashita, Kyoto, JP;
Katsuhiko Miyamoto, Kyoto, JP;
Hiroshi Tanada, Nagoya, JP;
Yasuyuki Hatsuda, Okazaki, JP;
Takehisa Fujita, Kariya, JP;
Takaharu Hashimoto, Nagoya, JP;
Keisuke Tashiro, Okazaki, JP;
Mizuki Anai, Anjo, JP;
Mitsutaka Kojima, Okazaki, JP;
Masayuki Yamashita, Kyoto, JP;
Katsuhiko Miyamoto, Kyoto, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A degradation estimating apparatus for an unburned fuel component adsorption catalyst, which is connected with an internal combustion engine and has an unburned fuel component adsorbent and an oxygen storage component is provided. The apparatus includes a degradation estimating unit for making estimation for a degradation of the unburned fuel component adsorption catalyst on the basis of a first term and a second term. The first term is from the cancellation of the fuel supply to detecting a variation of an upstream side air-fuel ratio occurring due to the increase of the reductant quantity in the exhaust gas. The second term is from the cancellation of the fuel supply to detecting of a variation of the downstream side air-fuel ratio due to an increase of the reductant quantity.