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:
Apr. 25, 1995
Filed:
Apr. 08, 1993
Applicant:
Inventors:
Rodger B Evans, Rochester Hills, MI (US);
Robert W Mince, Oak Park, MI (US);
Carlton T Davis, Howell, MI (US);
Daniel H Hopper, Peru, IN (US);
Joel F Downey, Kokomo, IN (US);
Mark A Laubenstein, Windfall, IN (US);
Assignee:
Delco Electronics Corporation, Kokomo, IN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P / ; G01M / ; G01P / ;
U.S. Cl.
CPC ...
324391 ; 324170 ; 73116 ;
Abstract
Absolute engine position sensing is provided by monitoring the temporal relationship of energization of multiple spark plugs sharing a common source of drive energy in a direct ignition application. The spark plugs are connected across the source with opposing electrical polarity, and the relative time of discharge across the plugs compared by sensing the time and polarity of high speed transient activity in proximity to the source.