At present, China is still widely used locomotive with forcedventilation of the traction motor, the continuous power rating to a large extent dependent on the ventilation and cooling effect.
目前我国机车上仍广泛地采用具有强迫通风的牵引电机，其连续定额功率在很大程度上依赖于通风冷却的效果。
2
Electrical wheel gear unit is a DC motor with forcedventilation, that exchanges electrical to mechanical energy.