| 摘要 |
A railway vehicle braking system comprises a friction brake and a wiper device arranged to wipe the tire of a vehicle wheel or the rail on which the wheel runs to increase the coefficient of friction between the tire and rail. A skid sensing device is operable in response to excessive deceleration of the wheel, when the brake is applied, to reduce the braking effort, and an actuator applies the wiper device in response to operation of the skid sensing device. The wiper may simply clean the tire of grease and moisture, or apply a coating of friction material, or both. |
