OIL PRESSURE GENERATING DEVICE OF AUTOMATIC TRANSMISSION AND METHOD OF CONTROLLING THE SAME

PROBLEM TO BE SOLVED: To provide an oil pressure generating device of an automatic transmission having the improved energy efficiency, and to provide a method of controlling the oil pressure generating device of an automatic transmission.SOLUTION: The method of controlling the oil pressure generatin...

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Bibliographische Detailangaben
Hauptverfasser:	SONG SANG LOK, KANG SEUNGJAE, KIM JONG HYUN, LEE HAKSUNG
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an oil pressure generating device of an automatic transmission having the improved energy efficiency, and to provide a method of controlling the oil pressure generating device of an automatic transmission.SOLUTION: The method of controlling the oil pressure generating device of an automatic transmission, including a first oil pump which generates an oil pressure necessary for shift transmission, a second oil pump which additionally generates a deficient oil pressure, an accumulator for storing an oil pressure generated more than necessary by the first oil pump and a control unit which controls the pumping of the second oil pump, includes: a step of actuating the first oil pump in an idle stop state; a step of predicting the completion time point in the idle stop state; a step of starting the second oil pump before a time set from the predicted completion time point; a step of actuating the second oil pump at the maximum set rotation speed; and a step of actuating the second oil pump at the target rotation speed.