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:
Mar. 01, 1977
Filed:
Jan. 21, 1975
Applicant:
Inventor:
Louis Chateau, Rosny-sur-Bois, FR;
Assignee:
Ducellier & Cie, Paris, Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
1231 / ; 123 / ;
Abstract
An ignition system and a method of ignition for an internal combustion engine in which an element is rotated in association with a position detector to provide a reference signal varying in duration with engine speed. Impulses of constant frequency are produced by a generator and the impulses appearing during the duration of the reference signal are counted and coded. A further generator produces pulses as a function of induction depression and these are also counted and coded, and this coded value is corrected as a function of engine speed. The first coded value and the corrected coded value are compared and, when these coincide, an ignition spark is produced.