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:
Jul. 08, 2014
Filed:
Apr. 28, 2011
Taro Hirai, Kariya, JP;
Noriaki Ikemoto, Kariya, JP;
Takeshi Harada, Kariya, JP;
Naoyuki Kamiya, Kariya, JP;
Hisashi Iida, Kariya, JP;
Taro Hirai, Kariya, JP;
Noriaki Ikemoto, Kariya, JP;
Takeshi Harada, Kariya, JP;
Naoyuki Kamiya, Kariya, JP;
Hisashi Iida, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
An apparatus is used for diagnosing the temperature state of a catalyst converter. The catalyst converter includes a catalyst for cleaning an emission, and a conductive carrier for carrying the catalyst. The conductive carrier is energized for temperature rise of the catalyst, and the conductive carrier has a characteristic in which resistance drops with temperature increase. In the apparatus, a first obtaining unit obtains a first parameter having a first correlation with supply power to the conductive carrier for energization of the conductive carrier. A second obtaining unit obtains a second parameter having a second correlation with a temperature of the conductive carrier. A diagnosing unit diagnoses the temperature state of the conductive carrier based on a comparison between the first parameter and the second parameter.