초록 ▼

A control arrangement for use in a hydraulic braking system equipped with an antiskid control device and an auxiliary energy source and including a master cylinder device which is operated in dependence on the travel of a brake pedal, includes normally open separating valves in braking conduits to t

A control arrangement for use in a hydraulic braking system equipped with an antiskid control device and an auxiliary energy source and including a master cylinder device which is operated in dependence on the travel of a brake pedal, includes normally open separating valves in braking conduits to the wheel brake actuating cylinders, which close during antiskid control operation, provided that auxiliary energy is available. An auxiliary supply conduit supplies the auxiliary energy to the wheel brake actuating cylinders so that the latter can be operated in a dynamic manner. A normally closed return valve is interposed in the return conduit from the respective wheel brake actuating cylinders and can be opened, either directly or indirectly, by the auxiliary energy during the antiskid control operation, so that the pressure from the wheel brake operating cylinder to be controlled can be relieved to the low-pressure supply reservoir while rendering static operation of the wheel brake actuating cylinders possible in its normal closed position assumed when no antiskid control action is needed. The pressure of the auxiliary energy hydraulic fluid can be generated by a hydraulic pump which is operated only during the antiskid control action, or the auxiliary energy supply system can be operated on a continuous basis, in which case the auxiliary hydraulic fluid is supplied to the hydraulic braking circuit only when the need for an antiskid control action arises.

대표청구항 ▼

A control arrangement for use in hydraulic braking system of a vehicle, particularly of a motor vehicle, equipped with an antiskid control device, for controlling the operation of at least one brake actuating cylinder interposed in a braking circuit between a supply conduit having a first and a seco

A control arrangement for use in hydraulic braking system of a vehicle, particularly of a motor vehicle, equipped with an antiskid control device, for controlling the operation of at least one brake actuating cylinder interposed in a braking circuit between a supply conduit having a first and a second branch respectively communicating with a master cylinder device having at least one master piston and with an auxiliary energy pressure source at their upstream ends and merging with one another upstream of the brake actuating cylinder, said auxiliary pressure source responsive to antiskid control action for generating elevated hydraulic pressure and a return conduit connected to a supply reservoir at its downstream end, in dependence on the operation of the antiskid control device and of the auxiliary energy source, the invention comprising: means for hydraulically separating the brake actuating cylinder from the master cylinder device during antiskid control action, including a hydraulically operated separating valve interposed in the first branch of the supply conduit and assuming its open position in the absence of antiskid control action and its closed position during antiskid control action and when the auxiliary energy source is operational in response to elevated hydraulic pressure; and means for hydraulically connecting the brake actuating cylinder to the auxiliary energy source during antiskid control action, including a check valve interposed in the second branch of the supply conduit and assuming its open position when the pressure prevailing upstream thereof exceeds that prevailing downstream of the same.