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:
May. 18, 1993
Filed:
Sep. 16, 1991
Makoto Anzai, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
The fuel supply apparatus for a multiple-cylinder internal combustion engine is comprised of a fuel supply means through which a fuel amount is injected into each combustion chamber of the engine. The fuel amount is corrected by fuel supply amount correcting means in a controller of the fuel supply apparatus, in accordance with intake port pressure near the fuel supply means to maintain a proper fuel injection even in various intake pressure conditions. The intake port pressure is estimated by intake port pressure estimating mean in the controller to search a data map in the intake port pressure estimating means, in accordance with an engine speed, an opening degree of the throttle valve, and an crankangle at the fuel injection start time.