|2. Prevention of Wheel Slide and Flat Occurrence by Jetting Adhesion Improvement Materials|
Wheel slide protection devices (i.e. wheel slide re-adhesion devices) are currently in widespread use to prevent wheel slide and flat occurrence when braking, but the speed detector needs to be mounted on all axles of the train set. However, since jetting devices for adhesion improvement materials need to be mounted on only the first axle of the train set to prevent wheel slides of the whole train set, they have already been used in part of Shinkansen and conventional motor car trains as wheel slide protection devices linked to emergency braking. If this technique can also be applied to service braking, wheel slides might be prevented at far lower cost than using wheel slide protection devices. However, for this purpose controls such as jetting linked to slide detection will be required.