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:
Jun. 21, 1994
Filed:
Mar. 15, 1993
Applicant:
Inventors:
David G Mc Kendry, Bloomfield Hills, MI (US);
Kenneth D Leininger, Sand Creek, MI (US);
Mark G Thomas, Royal Oak, MI (US);
Matthew T Hamilton, Warren, MI (US);
Assignees:
General Motors Corporation, Detroit, MI (US);
Delco Electronics Corp., Kokomo, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731173 ; 73115 ;
Abstract
The absolute angular position of an internal combustion engine is determined by monitoring engine intake manifold pressure at a strategic position in the manifold affected most significantly by the intake event of a predetermined cylinder. A significant or maximum depression in manifold pressure over each engine cycle then is indicative of the intake stroke of the predetermined cylinder.