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. 27, 2006
Filed:
Jul. 21, 2004
Jason W. Flanagan, Rochester, NY (US);
Timothy W. Kunz, Rochester, NY (US);
Wayne S. Harris, Hilton, NY (US);
Thomas H. Fischer, Rochester, NY (US);
Jason W. Flanagan, Rochester, NY (US);
Timothy W. Kunz, Rochester, NY (US);
Wayne S. Harris, Hilton, NY (US);
Thomas H. Fischer, Rochester, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A system for bringing an internal combustion engine to a stop at a predetermined angular position of an engine shaft, such as a crankshaft or a camshaft, with respect to the engine's valves. The optimum shaft stop position is the point wherein the fewest lifters are collapsed the least amount. Exemplary methods and apparatus include using the engine starter motor to jog the stopped engine to the desired position; using the engine alternator to impose a variable electromagnetic load on the engine to bring the engine to a stop at the desired position; using variable firing of cylinders to control the deceleration profile to bring the engine to a stop at the desired position; and providing one or more detents formed in the shaft and using a shaft follower to control the stop position of the shaft by engaging the follower into a detent.