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:
Aug. 30, 2011
Filed:
May. 08, 2009
Applicants:
Shinji Kunisada, Kobe, JP;
Yasushi Takemoto, Kobe, JP;
Inventors:
Shinji Kunisada, Kobe, JP;
Yasushi Takemoto, Kobe, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); B60T 7/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
An engine is operated with air-fuel ratio F/B control interrupted, by regarding an alcohol concentration value ALCinputted from outside as a tentative concentration value, and by detecting the rotation-speed fluctuation amount of an engine, the appropriateness of the tentative concentration value is determined. In the case where it is determined that the tentative concentration value is appropriate, an estimated alcohol concentration value ALCstored in a storage means is replaced by the tentatively changed alcohol concentration value ALC