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. 15, 1987
Filed:
Apr. 30, 1986
Steven E Michalski, Milwaukee, WI (US);
Snap-on Tools Corporation, Kenosha, WI (US);
Abstract
Engine timing apparatus includes a timing light and a pickup for producing a pickup signal in response to each ignition in a selected cylinder. The operator keys in the desired advance or retard angle in degrees in a range anywhere between +180.degree. and -180.degree.. A program-controlled microcontroller with an internaltimer samples the time period between pickup signals and, using this information and the advance of retard angle, calculates engine rpm and the proper time delay for the flash. The system automatically corrects for system delays to produce extremely accurate timing functions. The system may be used with an inductive pickup for timing gasoline engines or with a luminosity pickup for timing diesel engines. At high rpms the system produces a flash in response to every other pickup signal.