Method for idle speed control

A method for controlling engine output of an internal combustion engine of a vehicle having a hydraulic power steering system. The method may includes, during an idle condition where an engine speed is set to an idle speed, adjusting engine output based on a learned absolute steering wheel angle to...

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Bibliographische Detailangaben
Hauptverfasser:	HAMILTON HUGH, REICHENBACH RON, JACOBSEN BRENT, CHUPA MARIAN SUE, SCANNELL MIKE RYAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	A method for controlling engine output of an internal combustion engine of a vehicle having a hydraulic power steering system. The method may includes, during an idle condition where an engine speed is set to an idle speed, adjusting engine output based on a learned absolute steering wheel angle to vary the engine speed from the idle speed to compensate for changes in engine load caused by operation of the hydraulic power steering system. The learned absolute steering wheel angle may be based on a steering wheel angle relative to a steering wheel position at vehicle startup and operating conditions from previous vehicle operation before the vehicle startup. The invention has advantage that it can more accurately modulate the engine running to compensate for changes in engine loads, so as to reduce the idle speed of the minimum engine to improve the fuel economy.