Vehicle brake system, has valve arrangements that enable connections if differences between hydraulic line, wheel brake pressures exceed maximum value, shut off connections if excess line pressure lost

摘要

The system has a pressure generating unit, a hydraulic pressure source and electromagnetic valve arrangements in hydraulic fluid lines between wheel brakes and the pressure generating unit as well as the outlet side of the hydraulic pressure source. The valve arrangements enable connections if a difference between a line pressure and a wheel brake pressure exceeds a maximum value and shuts off the connections if excess line pressure is lost. The system has a brake pressure generating unit (16), a hydraulic pressure source (48,48') and electromagnetic valve arrangements (34,34',36,36') in first and second hydraulic fluid lines (42,42',44,44') between wheel brakes (26,26',28, 28') and the pressure generating unit as well as the outlet side of the hydraulic pressure source. The valve arrangements enable the connections if a first difference between a line pressure and a wheel brake pressure exceeds a defined maximum value and shuts off the connections if excess line pressure is lost.