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:
Nov. 03, 2015
Filed:
Nov. 15, 2011
Tatsuhiro Hashida, Susono, JP;
Hiroki Nishijima, Shizyoka-ken, JP;
Tatsuhiro Hashida, Susono, JP;
Hiroki Nishijima, Shizyoka-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
By raising a temperature of an element portion of a particulate matter sensor () that is arranged in an exhaust passage () of an internal combustion engine (), a heat generation amount that results from the combustion of particulate matters is detected, during a removal treatment of removing, through combustion, particulate matters that are deposited on the element portion. Besides, an amount of particulate matters that are deposited on the element portion of the particulate matter sensor () is detected on the basis of an output of the particulate matter sensor (), before the start of this removal treatment. On the other hand, an amount of particulate matters that are deposited on the element portion before the start of the removal treatment is detected in accordance with the heat generation amount. Furthermore, it is determined whether or not there is an abnormality in the particulate matter sensor (), on the basis of a difference between a first particulate matter amount that is detected on the basis of the output of the particulate matter sensor () and a second particulate matter amount that is detected on the basis of the heat generation amount.