Patent ID: 8909448

Claim:
A driving force distribution control device which is mounted on a four-wheel-drive vehicle including an engine configured to generate driving force for the vehicle, a transmission device configured to shift rotation of an output shaft of the engine by transmission ratios of a plurality of stages, and a driving force transmission system capable of transmitting output of the transmission device to main drive wheels which are one of front wheels and rear wheels and auxiliary drive wheels which are the other of the front wheels and the rear wheels so as to be switchable into a two-wheel-drive state and a four-wheel-drive state, the driving force distribution control device comprising: a control device configured to, when a rotational speed of the output shaft of the engine is in a range in which abnormal sound of the driving force transmission system due to pulsation of the driving force can be generated, set a torque value to be transmitted to the auxiliary drive wheels to a value capable of reducing the abnormal sound depending on the driving force of the engine; and a driving force transmitting device configured to transmit driving force depending on the value set by the control device to the auxiliary drive wheels.