BRAKING CONTROL DEVICE OF REAR WHEEL DRIVE VEHICLE WITH ELECTRIC POWER STEERING SYSTEM FOR IMPROVING DURABILITY BY RELIEVING FATIGUE OF FRICTION BRAKE APPARATUS

摘要

PURPOSE: A braking control device of a vehicle is provided to increase the endurance, and to relieve load to the friction brake apparatus by operating the friction brake apparatus in distributing engine brake force to driving and driven wheels. CONSTITUTION: Engine brake force is calculated(S30), and friction coefficient of a road and grip degree of a rear wheel are calculated(S40). The critical value is calculated to be increased in lowering the friction coefficient of the road(S70). Engine brake force and the target friction braking force based on braking operation of a driver are distributed to wheels to stabilize the vehicle body in estimating deterioration of the behavior of the vehicle in case of the grip degree of the rear wheel to be less than the critical value and operating the engine brake force(S80). Friction braking force of each wheel and torque of the engine are controlled based on the distribution(S90-S120).