| 摘要 |
PURPOSE:To make drive force maximum, by obtaining a slip rate in accordance with the difference between the rotational speed of drive wheel and a wheel rotational speed which is obtained from a vehicle running speed, and as well by controlling the output torque of a power train in accordance with the deviation between the thus obtained slip rate and a desired slip rate. CONSTITUTION:Rotational speeds 142 through 145 of left and right, and front and rear wheels are stored in predetermined address areas in a RAM1430 by means of an input interface circuit 1200. On the basis of these values a CPU1300 calculates the averaged rotational speed VF of the two front wheels, and as well calculates the averaged rotational speed VR of the two rear wheels. A slip rate is calculated in accordance with the thus calculated values, and discrimination is made on whether this slip rate S is a desired slip rate or not. When the slip rate S is not equal to the desired slip rate upon starting, the CPU calculates the deviation DELTAS therebetween, and also calculates the data DELTAtheta of correction amount for the throttle opening in accordance with the deviation. Further, the CPU issues, in accordance with this correction amount data DELTAtheta, an air amount control signal 220 for controlling the output torque of the engine.
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