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. 18, 2011
Filed:
May. 08, 2009
Naoya Okubo, Toyota, JP;
Naoya Okubo, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A control apparatus for an internal combustion engine includes a first fuel tank where a first fuel containing alcohol is stored; a second fuel tank where a second fuel is stored, wherein a concentration of alcohol in the second fuel is known; an alcohol concentration sensor disposed in a supply passage through which the first and second fuels flow; and a malfunction determination portion. The control apparatus switches a fuel flowing through the supply passage between the first fuel and the second fuel, and controls a fuel injection amount based on a concentration of the alcohol in the first fuel detected by the sensor. The malfunction determination portion determines that the sensor malfunctions, if a value detected by the sensor is outside a predetermined range corresponding to the concentration of the alcohol in the second fuel when the fuel flowing through the supply passage is switched to the second fuel.