Patent ID: 6717378
Filing Date: 2004-04-06
Classification: B60K,B60L,Y02T,Y10S

Abstract:
A motor output control system built in a hybrid vehicle which comprises an internal combustion engine and a motor as driving sources and in which the output of the internal combustion engine is assisted using the motor according to the driving state of the vehicle, the system comprising:an assistance mode determination section for determining whether the output assistance using the motor is permitted with respect to each of different control modes for the output assistance, where the determination is performed according to the driving state of the vehicle; an amount of assistance calculating section for calculating an amount of output assistance for each of the different control modes; an assistance permitting section for permitting the output assistance using the motor when the output assistance is permitted in any control mode according to the determination of the assistance mode determination section; an amount of assistance selecting section for selecting the maximum amount of assistance among the amounts of assistance, which are calculated by the amount of assistance calculating section and are assigned to the different control modes, when the output assistance using the motor is permitted by the assistance permitting section; and a mode shift section for: comparing a previous value of the maximum amount of assistance, selected by the amount of assistance selecting section last time, with the current value of the maximum amount of assistance selected this time; calculating a shift value obtained by subtracting a predetermined assistance value from the previous value when the current value is less than the previous value; and setting the amount of assistance using the motor to the shift value until the shift value becomes equal to or less than the current value, so as to gradually shift the amount of assistance from the previous value to the current value.