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:
Dec. 02, 2014
Filed:
Nov. 17, 2010
Koji Morita, Mishima, JP;
Koji Morita, Mishima, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
When alcohol mixing fuel is supplied to an internal combustion engine, an intake air flow rate is detected and a basic amplitude amount α of an upstream target air-fuel ratio abyfr corresponding to this detected intake air flow rate is calculated. Next, alcohol concentration in the fuel (in more detail, ethanol concentration Cetha) and a cooling water temperature (or an intake air temperature) are detected, hydrogen concentration Ch in a mixing exhaust gas is calculated based on the detected ethanol concentration Cetha and the detected cooling water temperature (or the detected intake air temperature) amplitude gain β corresponding to the calculated hydrogen concentration is calculated and finally, an amplitude amount (α×β) of the upstream target air-fuel ratio is calculated.