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:
Mar. 16, 1999
Filed:
Feb. 12, 1998
Naoki Nakada, Chiba, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A fuel injection control system for an in-cylinder direct injection, spark-ignition internal combustion engine employing a fuel injector through which fuel is injected directly into a combustion chamber of each of engine cylinders, comprises an engine-cylinder identification circuit for identifying an angular phase of each of the engine cylinders and for making a cylinder identification action, a first interrupt-injection circuit for executing a first interrupt injection operation for a first engine cylinder being on an intake stroke just after completion of the first cylinder identification action executed by the engine-cylinder identification circuit during an engine starting period, when exceeding a normal injection timing at the intake stroke for the first engine cylinder, and a second interrupt-injection circuit for executing a second interrupt injection operation for a second engine cylinder being on a compression stroke just after completion of the first cylinder identification action executed by the engine-cylinder identification circuit during the engine starting period, when exceeding a normal injection timing at the intake stroke for the second engine cylinder.