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:
Jan. 23, 1990
Filed:
Oct. 03, 1988
Akihisa Nakamura, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A valve control system of an internal combustion engine has a control circuit comprising valve control quantity setting means for setting the control quantity of valve means installed in the engine in accordance with the operational state of the engine and generating a first actuation signal in accordance with said control quantity and actuating means for actuating said valve means in accordance with said first actuation signal, in which said control circuit comprises: clock oscillation means for generating a check signal shorter than the reaction time of said valve means; synthesizing means for synthesizing said check signal and said first actuation signal and generating a synthesized signal; actuating means converting said synthesized signal into a second actuation signal and a valve actuation state determination signal as outputs, which are transmitted to said valve means; and valve actuation state decision means formed for detecting said valve actuation state determination signal and deciding the actuation state of said valve means.