Master cylinder

The master cylinder is part of a hydraulic actuation. This actuation always consists of a master cylinder and a slave cylinder , which are connected to one another by a pressure line. The task of such an arrangement is to transfer a force from A to B and, if necessary, to increase it.

functionality

functionality

An input force F1 acts on the master cylinder (primary piston, small diameter); this is in turn transferred to the liquid via the surface (A1) of the master cylinder, creating a pressure p.

${\displaystyle p={\frac {F_{1}}{A_{1}}}}$

This pressure p reaches the slave cylinder (secondary piston, large diameter) via the hydraulic line. Because the slave cylinder has a larger diameter, the output force F2 is increased.

${\displaystyle F_{2}=p\times A_{2}}$

Slave cylinder vehicle clutch

Slave cylinder assembled

application

The master cylinder is used in automobiles in the hydraulic system of brakes and clutches. With a weak step on the pedal, he exerts a strong force on the brake calliper or the clutch disc .