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. 21, 2009
Filed:
Sep. 14, 2006
Makoto Nakamura, Kanagawa, JP;
Tomio Hokari, Kanagawa, JP;
Seinosuke Hara, Kanagawa, JP;
Seiji Suga, Kanagawa, JP;
Masahiko Watanabe, Yokohama, JP;
Makoto Nakamura, Kanagawa, JP;
Tomio Hokari, Kanagawa, JP;
Seinosuke Hara, Kanagawa, JP;
Seiji Suga, Kanagawa, JP;
Masahiko Watanabe, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a multi-stage fuel-injection internal combustion engine employing a fuel injection system and a variable valve actuation system, engine valve timings are variably controlled depending on engine operating conditions. An electronic engine control unit is configured to execute cooperative control of the timing of sub-injection, injected before main injection, responsively to intake valve closure timing, and also to execute cooperative control of the timing of sub-injection, injected after the-main injection, responsively to exhaust valve open timing.