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:
Mar. 13, 2012
Filed:
Apr. 14, 2009
Daisuke Shibata, Numazu, JP;
Hiroshi Sawada, Gotenba, JP;
Taiga Hagimoto, Susono, JP;
Kazuhiro Wakao, Susono, JP;
Keisuke Sano, Susono, JP;
Kimikazu Yoda, Susono, JP;
Daisuke Shibata, Numazu, JP;
Hiroshi Sawada, Gotenba, JP;
Taiga Hagimoto, Susono, JP;
Kazuhiro Wakao, Susono, JP;
Keisuke Sano, Susono, JP;
Kimikazu Yoda, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In a malfunction diagnosis device for an exhaust gas purification system including an exhaust gas purification catalyst disposed in the exhaust passage of an internal combustion engine, and a reductant supply device that supplies reductant to exhaust gas that flows in an upstream side of the exhaust gas purification catalyst, the degree of degradation of the exhaust gas purification catalyst is diagnosed by comparing the timing at which the bed temperature of the exhaust gas purification catalyst starts to rise due to the heat of moisture adsorption reaction, against a normal value.