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:
Jun. 26, 2012
Filed:
Dec. 21, 2007
Kenji Katoh, Suntou-gun, JP;
Kenji Katoh, Suntou-gun, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An internal combustion engine control apparatus controls an internal combustion engine including: an exhaust passage including branch portions provided for the left and right banks and a common portion in which an exhaust gas purification device is provided; and a fuel supply system that supplies fuel to the respective engine cylinders. In the internal combustion engine, in order to recover the exhaust gas purification device, a bank control is executed in which the air-fuel ratio of the cylinders of the left bank is made rich while the air-fuel ratio of the cylinders of the right bank is made lean. The internal combustion engine is capable of running on alcohol-containing fuel and has an alcohol concentration sensor. The amount of unburned fuel to be supplied to the exhaust gas purification device during the bank control is adjusted based on the alcohol concentration in fuel.