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:
Sep. 21, 2010
Filed:
Oct. 23, 2006
Applicants:
Teruaki Kawakami, Tokyo, JP;
Hitoshi Inoue, Tokyo, JP;
Ryohei Takahashi, Hyogo, JP;
Morio Fujiwara, Tokyo, JP;
Inventors:
Teruaki Kawakami, Tokyo, JP;
Hitoshi Inoue, Tokyo, JP;
Ryohei Takahashi, Hyogo, JP;
Morio Fujiwara, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ion current corresponding to an amount of ion produced by combustion of air fuel mixture in a combustion chamber of an internal combustion engine is detected and an ion current parameter indicative of combustion state is calculated from the ion current. The properties of fuel are determined by a change of combustion state from an engine start time, that is, by a change of the ion current parameter.