Pneumatic suspension for railway vehicle

A pneumatic suspension for a rail vehicle comprising a body and a bogie, said pneumatic suspension extending between the body and a chassis of the bogie, comprising:

• a secondary pneumatic suspension element vertically supporting the body on the chassis, the secondary pneumatic suspension element capable of being supplied with compressed air at a supply pressure and a pressure source, wherein the pressure source further comprises:
• a command unit;
• a sensor connected to the command unit, the sensor able to measure a height between the chassis and the body at a level of the secondary pneumatic suspension element,
• a solenoid valve connecting the secondary pneumatic suspension element to the pressure source, the solenoid valve being commanded automatically by an electric command signal, the electric command signal generated by the command unit as a function of the height between the chassis and the body at the level of the secondary pneumatic suspension element, and
• a safety valve connected to the secondary pneumatic suspension element, the safety valve configured to discharge compressed air from the secondary pneumatic suspension element when the height between the chassis and the body at the level of the secondary pneumatic suspension element exceeds a predetermined height threshold.