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:
Dec. 08, 1987
Filed:
Aug. 15, 1986
Applicant:
Inventors:
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ; F02P / ;
U.S. Cl.
CPC ...
123643 ; 123630 ;
Abstract
Disclosed is an ignition signal control apparatus and method for a distributorless ignition system of the type having a sensing circuit which generates at least one reference signal which may be used to periodically indicate when ignition spark plugs should be fired, and at least one identifier signal determinative of the engine's crank angle position to identify the spark plug firing sequence. One aspect of the invention includes detecting that a transition in the identifier signal has not occurred, and generating a replacement signal independent of the crank angle position, to select one or more of the spark plugs to fire.