Patent ID: 6089678
Filing Date: 2000-07-18
Classification: B60T,Y10S

Abstract:
A hydraulic braking system for vehicles comprising a brake pedal (1), means comprising a pedal responsive transducer (2) for producing an electrical sign responsive to a pedal movement, an electrically controlled circuit means comprising solenoid-operated hydraulic actuators (5, 6, 7, 8) for providing normal service braking in responsive to said transducer produced electrical signal, means comprising a master cylinder (3) for applying fluid under an operating pressure via a direct flow path to brakes (12, 14, 16, 18) and responsive to a push-through mode of operation during a period of a failure of the electrical controlled circuit means, a pressure sensor (31) responsive to an output of said master cylinder (3), and means for comparing said transducer produced electrical signal with a second electrical signal sent from said pressure sensor in order to check an integrity of at least said direct flow path from said master cylinder to said brakes.