Title: Electronically controlled fuel injection system for internal combustion engines

Abstract: An electronically controlled fuel injection system in which terminating fuel injection is improved is disclosed. A reference position detector is adapted to generate a synchronizing signal at the predetermined angular position of an engine. A first computing circuit is connected to compute the required fuel injection interval in response to the synchronizing signal and a second computing circuit is connected to compute the rotation interval between two synchronizing signals successively generated. A further computing circuit is connected to compute the time interval which is equal to the difference between the rotation interval and the injection interval. The fuel injection is started when the time interval computed by the further computing circuit has passed after the generation of the synchronizing signal and is attained during the computed injection interval, whereby the fuel injection is terminated at the same position as the predetermined angular position.

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Inventors: Morino, Seiji (Okazaki, JP)
Kawai, Hisasi (Toyohashi, JP)

Application Number: 812597
Filing Date: 1977-07-01
Publication_date: 1979-07-10
Assignee: Nippon Soken, Inc. (Nishio, JP)
Primary Class(es): 123/486
Other Classes:
US Patent Ref:

3986006	Oct, 1976	Kawai et al.	123/32.
4034720	Jul, 1977	Noguchi et al.	123/32.

Other Refs:
Primary Examiner: Myhre, Charles J.
Assistant Examiner: Argenbright, Tony M.
Attorney: Cushman, Darby & Cushman