Operating unit for pneumatically operated friction clutch in driving line of esp. commercial vehicle arranged between IC engine and gear and with operating system for operating friction clutch

摘要

The operating system (14,32,42,82) has a clutch pedal (62) of the clutch pedal arrangement (60) connected with the operating system, for operating the friction clutch. The clutch pedal is operated in at least one first operating condition of the operating unit (10) and-or the friction coupling and-or the vehicle, according to power-distance characteristic of a first type. A signal and-or protection unit is provided for detecting faulty operations and protects against damage. It works in conjunction with the clutch pedal arrangement (60) in such a way or is integrated in a working mode. So that after the response of the protection unit to at least one second operating condition of the operating unit and-or of the friction coupling and-or the motor vehicle. In a response condition of the protection unit to at least one second operating condition of the operating unit and-or the friction clutch and-or the motor vehicle, in a response condition of the signal and-or the protection unit. The clutch pedal is operable only according to a power-distance characteristic of a second type. Which for indicating the second operating condition significantly differentiates from the power-distance characteristic of the first type.