METHOD FOR CONTROLLING OIL DISCHARGING OF ELECTRICALLY-POWERED OIL PUMP FOR HEV

摘要

A method for controlling a discharge rate of an electrically-powered oil pump for HEVs is provided to optimize a flow rate and minimize loss of each oil pump between overlap sections in which the electrically-powered oil pump and an A/T oil pump operate simultaneously. A method for controlling a discharge rate of an electrically-powered oil pump for HEVs is a step for starting the electrically-powered oil pump in a state that vehicle speed is 5KPH or less on overlap operation sections and a step for controlling the discharge rate of an electrically-powered oil pump in case creeping driving is maintained in a hill or a stagnant section in a state that vehicle speed is 5KPH. According to the discharge rate of an A/T oil pump, the discharge rate of the pump is controlled and reduced proportionally.