Vorrichtung und Verfahren zur Steuerung einer Ölpumpe in einem Automatikgetriebe

摘要

A condition for driving an electric oil pump (6) is set. A turbine speed (NT) or an input speed of an automatic transmission (3) is measured. A correction amount for a hydraulic pressure is calculated on the basis of the turbine speed obtained by reference to a relation between the turbine speed (NT) and hydraulic pressure, and a correction amount for a drive duty ratio of the electric oil pump (6) which is required for generation of the corrected hydraulic pressure is calculated. The procedure is resumed after the procedure has been performed. The condition for driving the electric oil pump (6) is updated on the basis of the correction amount for the drive duty ratio calculated.