Power-off shift shift control device and method

摘要

The present invention relates to a power-off shift shift control apparatus and a method thereof, comprising: a vehicle driving state sensing means for detecting a signal that is varied according to a driving state of a vehicle and outputting the signal as a corresponding electric signal; When the power off up shift shift occurs on the shift pattern while the driver presses the accelerator pedal and releases the electric signal outputted from the vehicle driving state detecting means, the power off up shift shift control signal is transmitted to the set SS point. The rate of change in engine speed in reserve until reaching ) Is greater than or equal to zero, or the rate of change of turbine speed ( If the rotational speed Nt of the turbine does not reach the SS point even after the maximum retention time Tmax to the SS point has elapsed, it is powered off by the fill time and fill duty set separately in the memory regardless of the SS point set above. Control means for performing an upshift shift control or outputting a power off upshift shift control signal stored in a memory when the turbine speed Nt reaches the SS point set within the power off upshift reservation maximum time Tmax; ; It includes a drive means for performing a power-off up shift shift in accordance with the power-off up shift shift control signal output from the control means, to improve the shift rhythm by performing the power-off up shift immediately without shift delay, There is an effect that can improve the abnormal shift.