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. 26, 1999
Filed:
Mar. 04, 1998
Naoki Nakada, Chiba, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A fuel injection control method and system in a multi-cylinder direct injection type internal combustion engine. A first sensor detects whether the engine is in a start-up condition and, upon detection, generates a start-up signal. A second sensor generates an engine operating condition indicative signal. A third sensor detects an operative condition of the fuel pump. A basic period of injection based on the second sensor signal is calculated. A decrease in injection amount based on the fuel pump operative conditions sensed by the third sensor is determined and the basic period of injection is modified to compensate for the decrease in the injection amount. The injection valves are controlled according to the modified injection period.