| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a motor-transmitting system automatic transmission from performing repetitive speed change even if a driver switches stepping-on of pedals between the accelerator pedal and the brake pedal. <P>SOLUTION: A target speed change gear becomes a high speed gear at time t2 while motor torque is reduced to zero from time t1 by means of accelerator pedal release operation (reduction of an amount STacc of an accelerator pedal stroke to zero), and an upshift speed change request is generated associated with the torque reduction. However, this speed change request is not carried out until time t3 where a delay time TMs has elapsed from the time t2, and this speed change request is carried out for the first time when reaching the time t3 in order to make the automatic transmission upshift from the present low speed gear selection state to the high speed gear. Thus, even though there is an increase request of motor regeneration torque on the basis of a brake operation immediately after the upshift speed change request time t2 (the time t2 to the time t3) of a torque reduction (accelerator pedal release) response, the speed change responding to this increase request is not generated, and repetitive speed change from the low speed gear to the high speed gear, and then, to the low speed gear can be avoided from generating in a short period. <P>COPYRIGHT: (C)2013,JPO&INPIT |
