SHIFT SHOCK REDUCING DEVICE OF CONTINUOUSLY VARIABLE TRANSMISSION-MOUNTED CAR

摘要

PROBLEM TO BE SOLVED: To reduce a shift shock of a continuously variable transmission including a shock caused by a shift speed without accompanying a shift delay without moderating the shift speed. SOLUTION: In (31), an operation is performed on the actual gear ratio (ip=Npri/Nsec) from a primary rotating speed Npri and a secondary rotating speed Nsec. In (32), a shift speed (d/dt)ip is calculated by dividing a difference value between the actual gear ratio (ip) of this time and the actual gear ratio (ic LO) of the last time by an operation periodΔt of a drawing 4. In (33), an operation is performed on inertia torque Tdi at shift time from the shift speed (d/dt)ip and the rotating speed Nsec , and in (34), an operation is performed on an engine torque conversion value Tei to offset the inertia torque Tdi , and this is outputted as correction torque of an engine. Here, a throttle normally set to opening corresponding to accelerator opening is increased/decreased by opening corresponding to the correction torque Tei , and the inertia torque Tdi is offset by an increase/decrease in engine torque, and a shift shock can be reduced.