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:
Apr. 10, 2007
Filed:
Jul. 11, 2006
Satoshi Yamaguchi, Wako, JP;
Mamoru Hasegawa, Wako, JP;
Hideki Sakamoto, Wako, JP;
Naoto Kitayama, Wako, JP;
Akira Odajima, Wako, JP;
Satoshi Yamaguchi, Wako, JP;
Mamoru Hasegawa, Wako, JP;
Hideki Sakamoto, Wako, JP;
Naoto Kitayama, Wako, JP;
Akira Odajima, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A control system used with an engine determines a fuel injection timing according to a detected engine operating condition and fuel injection is executed through a fuel injection valve. The target ignition timings of the fuel are set according to the detected engine operating condition and stored in a memory. An ignition delay of the actual ignition timing relative to the target ignition timing and a cetane number of the fuel are calculated. Control values of the recirculation amount of exhaust gases are set according to the detected engine operating condition and stored in the memory. The stored control value is retrieved and the recirculation amount of exhaust gases is controlled using the retrieved control value. A correction amount of the recirculation amount of exhaust gases is calculated according to the estimated cetane number and the recirculation amount of exhaust gases is controlled using the corrected control value.