| 摘要 |
<p>A drive force distribution control system in a four-wheel drive motor vehicle for distributing drive forces from an engine (11) of the motor vehicle to first and second wheels (17FL,17FR;17RL,I7RR] of the motor vehicle includes drive force distribut ing means (14) for distributing and transmitting the drive forces to the first and second wheels, first speed detecting means (20F) for detecting a rotational speed (Nf) of the first wheel, second speed detecting means (20R) for detecting a rotational speed (Nr) of the second wheel, torque detecting means (21) for detecting a torque (Tr) transmitted to the second wheel, and control means (22) for controlling the drive force distributing means. The control means calculates a slip ratio (S) of the second wheel to a road on which the motor vehicle is running based on the rotational speeds of the first and second wheels, calculates a ratio (Tr/S) between the torque (Tr) and the slip ratio (S), determines a distribution ratio between the drive forces to be distributed to the first and second wheels based on the ratio between the torque and the slip ratio, and controls the drive force distributing means to distribute and transmit the drive forces to the first and second wheels according to the distribution ratio.</p> |
