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:
Nov. 19, 1996
Filed:
May. 08, 1995
Atsushi Iochi, Yokohama, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
An apparatus and method for determining an engine operation control based engine revolution displacement for a multi-cylinder four-stroke internal combustion engine are disclosed in which a reference crank angle sensor is disposed on an engine crankshaft so as to output a reference signal which corresponds to a predetermined crank angular position with respect to a top dead center of each cylinder whenever the engine has revolved through a set crank angular displacement according to the number of cylinders (720.degree./6=120.degree., in the case of a six-cylinder engine). A unit crank angle sensor is disposed on the engine crankshaft so as to output a unit angle (1.degree. or 2.degree.) of the engine crankshaft revolution, a first counter (C1) is built in a gate array (IC-package or gate arrary IC) so as to count the unit angular signal (POS) upon receipt of the reference signal (REF) and so as to be reset to zero when a count value of the first counter has reached a predetermined count value corresponding to the set crank angular displacement and when the first counter receives the subsequent reference signal.