Anti-lock brake system with clutch or transmission control

Claim 1

An anti-lock controlled brake system for automotive vehicles, comprising a braking pressure generator, n auxiliary-pressure source, a plurality of wheel sensors, an electronic controller for determining wheel rotational behavior and for generating electric braking pressure control signals which control individual pressure-fluid lines connected to wheel brakes, a drive train connected between an engine and a pair of driven wheels and clutch means actuatable by the auxiliary-power source for at least partially disengaging the vehicle engine from the driven wheels during brake slip control in response to said controller, said clutch means including a clutch member (67) which is actuated by a clutch lever (66) connected to a piston rod of a slave cylinder (61), said slve cylinder (61) having a first hydraulic input (62) responsive to said controller and said slave cylinder having a second hydraulic input (63) connected in parallel with said first hydraulic input (62) and responsive to a clutch-pedal-actuated cylinder, and said clutch means including a directional control valve (68) responsive to said controller connecting said first and second hydraulic inputs to an unpressurized reservoir and wherein actuation of said clutch member (67) by said clutch lever (66) is precluded when said directional control valve is open.