Patent ID: 8443955

Claim:
A clutch system, comprising a clutch with a hydraulic actuation unit having an adjustable clutch part connecting and disconnecting a force transmission path between a clutch input side and a clutch output side; a hydraulic connection which connects the hydraulic actuation unit with an electrohydraulic actuator disposed outside the clutch, the electrohydraulic actuator having an actuator final control element that is adjustable by a predeterminable regulating distance; a control unit for triggering the electrohydraulic actuator; and a distance detector configured to detect the regulating distance of the actuator final control element and forward the regulating distance to the control unit, wherein the hydraulic connection together with hydraulic components of the hydraulic actuation unit and of the electrohydraulic actuator form a hydraulic system, wherein the hydraulic actuation unit has a mechanical stop that limits the adjustment of the clutch part, wherein the control unit is configured to detect contact of the clutch part with the stop based on a characteristic change occurring at that time in either (i) a pressure in the hydraulic system detected by a pressure sensor, or (ii) a trigger signal of the actuator, wherein, based on detection of contact of the clutch part with the stop, the control unit triggers the electrohydraulic actuator and/or generates a diagnosis signal, and wherein the control unit is configured to (i) compare the value detected for the regulating distance of the actuator final control element, or a variable derived from it, with at least one threshold value in response detection of contact of the clutch part with the stop, and (ii) generate an error signal if the at least one threshold value is exceeded.