초록 ▼

In a brake system with a controllable hydraulic pump in a hydraulic circuit, and with at least one solenoid valve, the operating state of the valve is changed in response to a control signal. As a result of the change in the operating state of the solenoid valve, the flow resistance in the hydraulic

In a brake system with a controllable hydraulic pump in a hydraulic circuit, and with at least one solenoid valve, the operating state of the valve is changed in response to a control signal. As a result of the change in the operating state of the solenoid valve, the flow resistance in the hydraulic circuit is changed. Monitoring structure is provided which, in the presence of certain operating conditions, monitor the run-down behavior of the hydraulic pump in different operating states of the solenoid valve and actuate a display device to display a malfunction of the brake system when a malfunction is detected. Additionally, or alternatively, the automatic brake control can be turned off in reaction to the detection of a malfunction. It is possible for the control unit and the hydraulic unit to be replaced separately and for the installation to be tested for proper functioning.

대표청구항 ▼

[ We claim:] [1.] Method for monitoring a brake system comprising a hydraulic circuit with a hydraulic pump and at least one solenoid valve having at least two operating states, wherein changing the operating state changes the flow resistance of the hydraulic circuit, said method comprisingdetermini

[ We claim:] [1.] Method for monitoring a brake system comprising a hydraulic circuit with a hydraulic pump and at least one solenoid valve having at least two operating states, wherein changing the operating state changes the flow resistance of the hydraulic circuit, said method comprisingdetermining whether at least one specified operating condition is present,determining run-down behavior of the hydraulic pump in a first operating state of the solenoid valve when said at least one specified operating condition is present,determining run-down behavior of the pump in a second operating state of the solenoid valve,comparing said run-down behaviors in said first and second operating states,determining whether a malfunction is present based on said comparison, andactuating a display device when it is determined that a malfunction is present.