东风型内燃机车由于撒砂装置不是自动控制,空转时由操纵台上的红灯和蜂鸣器给司机发出信号,再由司机踏SK施行撒砂或回手柄来控制空转,这样就延长了空转的时间,对柴油机、电机的保养不利。为了缩短空转时间,将撒砂电路进行一点小改,使其在轮对发生空转时能自动撒砂。 Dongfeng diesel locomotive because the sanding device is not automatic control, idling from the red light on the console and the buzzer to the driver signal, and then by the driver riding SK sand sprinkle or back handle to control the idling, thus extending the idling Of the time, on the diesel engine, motor maintenance adverse. In order to shorten the idle time, the sand circuit will be a little change to make it automatically idle when the wheel sprinkle sand.