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:
Oct. 26, 2010
Filed:
Jul. 03, 2007
Atsushi Iwai, Minokamo, JP;
Atsushi Iwai, Minokamo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
An abnormality diagnostic device diagnoses the presence/absence of abnormality of an intake air temperature sensor () on the basis of the magnitude of deviation between the lowest temperature of the intake air detected via the intake air temperature sensor () in a period from the startup of an internal combustion engine until the trend of change in the temperature of the air taken into the internal combustion engine becomes stable and a temperature detected via a water temperature sensor (). If the decline in the temperature of the intake air detected via the intake air temperature sensor () within the aforementioned period is greater than or equal to a predetermined criterion value (IAT), the abnormality diagnosis is suspended.