A method of controlling a starter motor of a powertrain system

A method for dealing with a change of mind event during an automatic shut-down of an engine 6 in which the speed at which a starter motor 11 used to restart the engine 6 is disengaged is based upon the comparison of current engine speed (N) with a cranking speed limit (SLIM); The method deals with t...

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Bibliographische Detailangaben
Hauptverfasser:	Gary David Paisley, David Hesketh
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR STARTING OF COMBUSTION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A method for dealing with a change of mind event during an automatic shut-down of an engine 6 in which the speed at which a starter motor 11 used to restart the engine 6 is disengaged is based upon the comparison of current engine speed (N) with a cranking speed limit (SLIM); The method deals with the problem of unreliable starting due to variations in driveline state by calibrating the cranking speed limit (SLIM) for a fully open driveline state, and may also calibrate the cranking speed limit (SLIM) for a not fully open driveline state. This helps prevent the occurrence of detrimental noise, vibration, and harshness due to a single speed of the starter motor 11 coupled with a partially closed driveline that may be present during a change of mind event.