| 摘要 |
A hydraulic cylinder, in particular a master cylinder for a hydraulic clutch actuation system for motor vehicles, comprises a housing having a cylinder wall, in which housing a piston is received in a longitudinally displaceable manner. The piston, together with the cylinder wall, delimits a pressure chamber and has a running surface for a housing-side sealing element which in an operating position of the piston co-operates with the running surface thereof in order to seal off the pressure chamber, whereas the pressure chamber in a rest position of the piston is connected to an after-running region by equalization grooves of an after-running device. The cylinder wall of the housing is provided with profiled cut-outs on its piston-side end at least in a lower region in the installed position of the cylinder, which cut-outs each have an upper boundary surface which in the installed position of the cylinder rises up to the equalization grooves of the after-running device. As a result, a hydraulic cylinder of simple design is provided which has an improved deaeration behavior compared to the prior art.
|
