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. 07, 2015
Filed:
May. 01, 2013
Applicant:
Denso Corporation, Kariya, Aichi-pref., JP;
Inventors:
Shigeto Yahata, Toyoake, JP;
Tomohiro Ueno, Nagoya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/10 (2006.01); F02D 45/00 (2006.01); F02D 41/22 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 45/00 (2013.01); F02D 41/1439 (2013.01); F02D 41/1466 (2013.01); F02D 41/1467 (2013.01); F02D 41/222 (2013.01); F02D 2041/1433 (2013.01); Y02T 10/40 (2013.01);
Abstract
In an ordinary mode, when an abnormality diagnosis of a PM sensor attached to a downstream opening downstream of a filter is performed, the PM sensor is moved to a first upstream opening upstream of the filter, and an exhaust gas is discharged from an engine. An ECU stores a program for the abnormality diagnosis. In an abnormality diagnosis mode, the ECU diagnoses the PM sensor by comparing an output value of the PM sensor to a standard output after performing the program. The first upstream opening may be closed by a cover in the ordinary mode.