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. 24, 2012
Filed:
May. 19, 2010
Martin Müller, Commerce Township, MI (US);
Martin Müller, Commerce Township, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An engine control system, controller, and method for estimating a stopped engine crank angle of an internal combustion engine. Typical crank sensors do not output a reliable crank signal when the engine is about to stop, and do not indicate crank direction which is necessary to determine if engine bounce-back occurs. A crank sensor signal is analyzed as the engine coasts to a stop so that a coast-down model can be adjusted to accurately estimate the stopped engine crank angle. A bounce-back model is also used to estimate an engine bounce-back angle and to make further corrections to the estimated stopped engine crank angle.