Clutch Master Cylinders (CMC)
is a clutch master cylinder?
Part of both full and semi-hydraulic clutch systems, the clutch master cylinder (CMC) is designed to transform the movement of the clutch pedal via the movement of hydraulic fluid. Clutch master cylinders with sensors are commonly used on applications equipped with electronic hand brake, cruise control or start & stop function. A sensor with reduced dimension is attached to the CMC body and the piston contains a magnet. The magnetic field enables the sensor to detect the linear position of the piston, identifying the pedal position. This new technology applies to CMC cars such as the Peugeot 308 and the Citroen C4 Picasso.
The advantage of hydraulic systems
As they are more flexible and reliable than cable systems, more and more cars are turning to hydraulic systems. Not only do they enable an optimal and constant pedal effort, but the used material is up to 70% lighter and more compact than a standard clutch system.
Valeo: hydraulic clutch specialists
Always ahead of the game, Valeo has developed a wide range of hydraulic parts: clutch master cylinder (CMC), clutch release cylinder (CRC) and clutch slave cylinder (CSC). Both the clutch master cylinder and the clutch release cylinder are used in semi-hydraulic systems, while a full hydraulic system uses a CMC and CSC. The current Valeo range has over 100 part numbers available to the aftermarket.