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. 12, 1978
Filed:
Jul. 28, 1975
Applicant:
Inventor:
Louis Jean Chateau, Rosny sur Bois, FR;
Assignee:
Ducellier et Co., Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
1231 / ;
Abstract
A digital control device for an internal combustion engine ignition system includes a shaft angle digital encoder, a shaft speed digital encoder, a matrix memory addressed by the speed digital encoder and programmed to produce a digital output representing the required ignition angle for each speed value, a comparator connected to the angle encoder and the matrix to produce an output pulse when the digital signals therefrom coincide and means controlled by the angle encoder, the matrix memory device and the comparator for determining the shaft angles at which current flow through the ignition coil is initiated and terminated.