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. 06, 2018
Filed:
Feb. 24, 2016
Applicant:
Isuzu Motors Limited, Tokyo, JP;
Inventors:
Assignee:
ISUZU MOTORS LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 41/22 (2006.01); F02D 41/30 (2006.01); G01N 33/00 (2006.01); F01N 13/00 (2010.01); F02D 41/24 (2006.01); F02D 13/04 (2006.01);
U.S. Cl.
CPC ...
F02D 41/222 (2013.01); F01N 13/008 (2013.01); F02D 41/2441 (2013.01); F02D 41/3005 (2013.01); G01N 33/0037 (2013.01); F01N 2560/026 (2013.01); F02D 13/04 (2013.01);
Abstract
A diagnostic device for a sensorprovided in an exhaust passageof an internal combustion engineof a vehicle and detecting nitrogen compounds in exhaust gas, the diagnostic device including an offset diagnosis unitwhich diagnoses, during deceleration of the vehicle in which the internal combustion enginestops fuel injection, an offset amount of a sensor value of the sensorfrom a zero point based on the sensor value of the sensor value, and a diagnosis prohibition unitwhich prohibits the diagnosing of the offset amount when a flow rate of the exhaust gas of the internal combustion enginerapidly increases while the offset amount is diagnosed by the offset diagnosis unit