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:
Oct. 30, 2007
Filed:
Jul. 03, 2006
Manabu Okamura, Yokohama, JP;
Takashi Nakazawa, Kawasaki, JP;
Manabu Okamura, Yokohama, JP;
Takashi Nakazawa, Kawasaki, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A fuel control method and system is provided for delivering fuel to an engine that employs an engine controller that is configured to the fuel injection quantity delivered to the engine. The engine controller is configured to: calculate a fuel injection quantity based on at least one operating condition of an engine; calculate an estimated fuel pressure value of the high pressure fuel that will be acting on a fuel injection valve when the prescribed fuel injection timing is reached at a prescribed calculation time occurring before the prescribed fuel injection timing; correct the fuel injection quantity that was previously calculated to a corrected fuel injection quantity based on the estimated fuel pressure value that will exist at the prescribed fuel injection timing; and open the fuel injection valve at the prescribed fuel injection timing to discharge a quantity of fuel equal to the corrected fuel injection quantity.