Driven wheel torque control system

摘要

In reducing a driven wheel output torque by a driven wheel output torque reducing device when slipping of a driven wheel becomes excessive in a vehicle including a torque converter between an internal combustion engine and the driven wheel, an output torque from the internal combustion engine is calculated and is first converted into a driven wheel applied toque in consideration of an amplification of the torque in the torque converter. Then, a surplus torque consumed for the slipping of the driven wheel is calculated, and a transmittable torque which can be actually transmitted to a road surface is calculated from the driven wheel applied torque and the surplus torque. On the basis of the transmittable torque, a decrement in driven wheel torque is determined. An over-control in the control of slipping of the driven wheel is prevented by taking an amplification of the torque by the torque converter into consideration in this manner.