Kickdown of automatic transmission 2- 1 shift control method

摘要

When the kick-down 2- 1 shift control signal is output on the shift pattern, it is determined whether the predetermined shift condition is satisfied. If the shift condition is satisfied, the target shift stage is maintained at 2 speed and the shift stage is completed at 1 speed. And, if the vehicle satisfies the kick down shift condition according to the driver's accelerator pedal operation during the third speed run to control the target shift stage at 1 speed, performing a kick down 3- 2 shift; As the kick-down 3- 2 shift is performed in the above step, it is determined whether the kick-down 2- 1 shift condition according to the driver's accelerator pedal operation is satisfied, and the kick-down 2- 1 shift condition is determined. If it is satisfied, determining whether the predetermined kick-down 2- 1 shift entry condition is satisfied; If the predetermined kick-down 2- 1 shift entry condition set in the above step is satisfied, the duty control for synchronizing the shift to 1 speed and completing the shift to 1 speed by maintaining the target shift stage at 2 speeds is performed. Since the step of outputting the signal, the transmission shock can be reduced, the durability of the automatic transmission can be increased, and the riding comfort can be improved.