Improvement of the Lateral Ride Comfort on Railway Vehicles by Mitigating the Lateral Bump Stop Contact in Curved Sections

摘要

In order to improve the lateral ride comfort of vehicles, trials of applying a pneumatic actuator equipped with a displacement dependent control valve were conducted. The valve controls the force generated by the actuator depending on the relative displacement between the vehicle body and the bogie. This control makes it possible to keep the vehicle body around the neutral position. The results of the running tests show that the actuator has the ability’ to decrease impacts caused by collisions of the center pin of the vehicle body against the lateral bump stop. Reducing the impact leads to lower lateral vibrational acceleration of the vehicle. The actuator can operate independently using only a compressed air supply, and therefore there is no need to equip the actuator with electrical sensors and control devices.