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:
Sep. 10, 1991
Filed:
Nov. 22, 1989
Nissan Motor Company, Ltd., Yokohama, JP;
Abstract
A system and a method for detecting an engine revolution speed, identifying engine cylinders, and controlling an engine operation according to the detected engine revolution speed and identified engine cylinders in which a crank angle sensor includes a rotor plate which rotates in synchronization with a rotation of an engine crankshaft, a plurality of first slits whose number corresponds to the number of cylinders and which are mutually arranged at equal intervals along the circumferential direction of the rotor plate, and second slit, both first and second slits being aligned on the same circumferential direction, the sensor outputting a pulse train signal including a first signal corresponding to a first crank angle position before a top dead center in a compression stroke and a second signal corresponding to a second crank angle position after the top dead center in the compression stroke of a first engine cylinder and a microcomputer executes a fuel injection quantity and/or ignition timing control on the basis of the first and second signals derived by the crank angle sensor.