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:
Jul. 22, 2008
Filed:
Nov. 02, 2006
Applicants:
Satoshi Yamaguchi, Wako, JP;
Mamoru Hasegawa, Wako, JP;
Hideki Sakamoto, Wako, JP;
Naoto Kitayama, Wako, JP;
Inventors:
Satoshi Yamaguchi, Wako, JP;
Mamoru Hasegawa, Wako, JP;
Hideki Sakamoto, Wako, JP;
Naoto Kitayama, Wako, JP;
Assignee:
Honda Motor Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02B 3/00 (2006.01); F02M 7/00 (2006.01); F02M 51/00 (2006.01); G06F 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A control system for an internal combustion engine having at least one fuel injection valve for injecting fuel into a combustion chamber of the engine and burning the injected fuel by compression ignition. A fuel injection control parameter for controlling at least one fuel injection valve is changed. A combustion state of the engine is then detected. A cetane number of the fuel is then estimated based on the changed fuel injection control parameter and the detected combustion state.