CONTROL DEVICE OF FOUR-WHEEL DRIVE VEHICLE AND FOUR-WHEEL DRIVE VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a four-wheel drive vehicle equipped with a driving motor which performs torque assist, which suppresses generation of abnormal sound in torque transmitting means while suppressing deterioration in fuel economy.SOLUTION: A control device 34 is provided in a four-wheel drive vehicle 10 that has: an engine 14; a driving motor 15 that performs torque assist for the engine 14; torque transmitting means 50 that transmits output torque T of the engine 14 to front wheels 12F as main driving wheels and rear wheels 12R as auxiliary driving wheels; a coupling 28 for adjusting torque Tto be distributed to the rear wheels 12R; and abnormal sound reducing means that makes the coupling 28 to increase the distribution of torque to the rear wheels 12R so as to suppress generation of abnormal sound when operating the engine in an abnormal sound generation area where the torque transmitting means 50 becomes an abnormal sound generation state. The control device 34 increases the distribution of torque less as the driving motor 15 gives more torque assist.SELECTED DRAWING: Figure 3