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. 01, 2014
Filed:
Dec. 28, 2010
Kazuhiro Wakao, Susono, JP;
Mie Sasai, Susono, JP;
Kazuhiro Wakao, Susono, JP;
Mie Sasai, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
An abnormality detection device for an internal combustion engine is controlled according to properties of employed fuel, and capable of accurately detecting an abnormality in a fuel property sensor, and more particularly, a stuck fuel property sensor. A measurement section of the sensor is housed in a fuel container, which is not disposed in a main flow path of a fuel flow path connecting a fuel pump to an injector, but is disposed apart from the main flow path. Fuel drawn from a fuel tank is introduced into the fuel container. The resulting output value of the sensor is acquired as a first sensor output value. Further, the fuel is discharged from the fuel container. The resulting output value of the sensor is acquired as a second output value. The first and second sensor output values are then used to check for an abnormality in the sensor.