Central clutch operator, for automobile hydraulic clutch, has bellows between clutch operator housing and movable piston enclosing sealed intermediate space filled with gas volume

摘要

The central clutch operator (15) has pressure chamber (13), defined between a recess (23) in a housing and a piston (14), supplied with a hydraulic fluid (12) for movement of the piston within the recess, with a bellows between the housing and the piston enclosing a sealed intermediate space filled with a gas volume. The intermediate space is sealed from the atmosphere by a vulcanized coupling or a pressure-connection at each end of the bellows.