METHOD FOR CONTROLLING A MOTOR TORQUE OF A HYBRID VEHICLE, CAPABLE OF REDUCING BACKLASH OF A GEAR BY TEMPORARILY INCREASING THE MOTOR TORQUE IN TIP-IN / OUT DRIVING OF A PARALLEL-TYPE HYBRID VEHICLE

摘要

PURPOSE: A method for controlling a motor torque of the hybrid vehicle is provided to improve driving feeling and a ride comfort by reducing a shock and jerk phenomenon caused by a torque vibration of a drive shaft.;CONSTITUTION: A method for controlling a motor torque of the hybrid vehicle comprises: a step of deciding a tip-in driving; and a step of controlling the motor torque using a motor torque profile considering a backlash between a driving side gear which is an automatic transmission side gear and a tire side gear which is a drive shaft side gear. The motor torque profile comprises: a process of commanding the increased motor torque with a m1 Nm size in determination time of the tip-in; a process of maintaining the m1 Nm sized motor torque for the predetermined time(t1); a process of commanding the motor torque which is decreased in a m2 Nm size; a process of maintaining the m2 Nm sized motor torque for the predetermined time(t2); and a process for controlling the motor torque coinciding with a driver's intention.;COPYRIGHT KIPO 2010