TRACTION SYSTEM UTILIZING ''PUMP BACK'' BASED ABS SYSTEM

摘要

An adaptive braking system for an automotive vehicle is also equipped with an adaptive traction mode to prevent wheel spin when the vehicle is accelerated. The system includes a pump (60) operated by an electric motor to supply replenishment fluid to the braking system. The inlet (58) of the pump is connected to the brake wheel cylinders (42, 54) when the system is operated in the adaptive braking mode. A solenoid valve (70) in a fluid line connecting the inlet of the pump (68) to the reservoir (22) of the brake system master cylinder (12) is actuated when the system is operated in the adaptive traction mode so that fluid is thereby supplied to the inlet (68) of the pump from the master cylinder reservoir (22).