Hydraulic brake system for vehicle driving wheels, with front and rear wheel brake circuits, has a valve assembly to prevent back pressure from one circuit acting on the brake cylinder of the other circuit

摘要

The hydraulic brake system (11) for vehicle driving wheels, with a front and back wheel brake circuit (4,10), has two main brake cylinders for an independent operation of both circuits. The circuit without a separation and change-over valve (19,20) has a valve assembly (23,24;23,25) to prevent a back pressure from the pump (9) on the brake cylinder (7,13) operated by hand or foot.