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:
Jul. 10, 1984
Filed:
Jun. 11, 1981
Hiroshi Yamaguchi, Yokohama, JP;
Sadao Takase, Yokohama, JP;
Nissan Motor Company, Limited, Kanagawa, JP;
Abstract
A fuel injection control device includes a microcomputer which determines a fuel injection amount based on the engine operation parameters. The microcomputer also actuates the fuel injection valve to open earlier in relation to the normal timing of fuel injection in response to turning on the starter switch. The fuel injection amount corresponds to the duration of opening of the fuel injection valve, and the opening duration of the fuel injection valve is defined by a driving signal and a stopping signal. The driving signal is generated at given angles of crank revolution. The driving signal is generated in response to a preset number of crank angle pulses, which is varied between the first fuel injecting operation and subsequent fuel injecting operations. The fuel injection timing of the first injecting operation is shorter than that of the remainder for improving start-up characteristics of the engine responsive to turning on the starter switch.