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:
May. 18, 2010
Filed:
Jun. 04, 2008
Applicants:
John A. Jacobs, Fenton, MI (US);
Kelly T. Jozefowicz, Highland, MI (US);
Inventors:
John A. Jacobs, Fenton, MI (US);
Kelly T. Jozefowicz, Highland, MI (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P 11/02 (2006.01); F02P 11/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of determining reverse engine rotation includes calculating a ratio of on time to off time of a camshaft position signal during camshaft rotation, determining whether a predetermined camshaft state has been entered based on said ratio, comparing the most recently determined camshaft state with a predetermined camshaft state pattern for forward engine rotation and determining a engine rotation direction based on said comparison.