Motor vehicle used as a utility vehicle comprises an auxiliary power feed device assigned to a clutch-operating device and introducing, on operation of the clutch pedal, compressed air into a pneumatic pressure chamber in a master cylinder

摘要

Motor vehicle, especially a utility vehicle, comprises a clutch between the drive motor and gears, and a clutch-operating device with a clutch pedal (1). An auxiliary power feed device (11) assigned to the clutch-operating device introduces, on operation of the clutch pedal, compressed air into a pneumatic pressure chamber (12) in a master cylinder (3) for pneumatic support of the operation of its piston (2). Preferred Features: In vehicles in which automatic operation of the clutch without operation of the clutch pedal is possible, the auxiliary power feed device is extended by a switch path so that either on operation of a gear lever or on operation of the clutch pedal a compressed air feed is introduced into the pneumatic pressure chamber of the master cylinder to support operation of the clutch.