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. 29, 2014
Filed:
Dec. 23, 2009
Masahiro Shigenaga, Nishio, JP;
Kimitaka Saitoh, Nagoya, JP;
Masatoshi Basaki, Nukata-gun, JP;
Kiyohiko Watanabe, Okazaki, JP;
Makoto Miwa, Kariya, JP;
Masahiro Shigenaga, Nishio, JP;
Kimitaka Saitoh, Nagoya, JP;
Masatoshi Basaki, Nukata-gun, JP;
Kiyohiko Watanabe, Okazaki, JP;
Makoto Miwa, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
When a driving region of an engine is in a specified self-ignited combustion region, a valve timing is controlled in such a manner as to establish a negative valve overlap period in which an exhaust valve and an intake valve are closed. During the negative valve overlap period, a direct injection is performed to reform a fuel. After the direct injection, a port injection is performed to control an output. Thereby, a self-ignited combustion control is performed. During the self-ignited combustion control, a fuel reform degree of the fuel injected by the direct fuel injection is detected, and a self-ignited combustion condition in a present combustion cycle is estimated based on the fuel reform degree detected in the present combustion cycle. A fuel injection quantity of the intake port fuel injection is corrected according to the estimated self-ignited combustion condition in order to stabilize the self-ignited combustion condition.