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:
Dec. 17, 2002
Filed:
Jan. 30, 2002
Tetsuya Iwasaki, Tokyo, JP;
Yoshiaki Yoshioka, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In fuel injection control apparatus and method for an engine having a variably operated engine valve in which at least a closure timing of an intake valve is variably controlled, a controller determines whether an actual closure timing of the intake valve is in a steady state, calculates a volume of a cylinder calculated from a target control value of the closure timing of the intake valve when determining that the actual closure timing is in the steady state and a fresh-air rate within the cylinder, calculates a mass air quantity sucked into the cylinder on the basis of a mass air quantity within an intake manifold calculated by income and outgo calculations of inflow and outflow quantities of a mass air within the intake manifold and a volume of the manifold, and calculates a fuel injection quantity on the basis of the mass air quantity sucked into the cylinder.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile