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:
Jan. 17, 2006
Filed:
Jan. 07, 2004
Dennis Mcdonald, Canton, MI (US);
Ross D. Pursifull, Dearborn, MI (US);
Dennis McDonald, Canton, MI (US);
Ross D. Pursifull, Dearborn, MI (US);
Visteon Global Technologies, Inc., Van Buren Township, MI (US);
Abstract
The present invention provides a system for determining engine stop position and includes an engine tracking subsystem and a throttle control subsystem. The engine tracking subsystem is coupled to the engine and determines the engine position by sensing rotation of the crankshaft. Once the engine controller receives an engine shutdown signal, the throttle is controlled to lower the air pressure in the intake manifold of the engine. Lowered as such, the resulting reversal torque caused by compression of air in the cylinders is smaller than the friction load torque of the engine and engine reversal is eliminated or substantially reduced. When the engine has stopped, the engine tracking system stores the last engine position for use during the next engine startup.