发动机起动后,为了防止起动机电枢被发动机以高速拖转而产生飞散的后果,起动机的驱动部分都带有超速防护装置。目前国内外一般中小功率起动机大部分采用滚柱式离合器,大功率起动机多采用摩擦式离合器,或超速自行脱啮等形式。由于这些结构形式无论是性能 After starting the engine, in order to prevent the starter armature was dragged by the engine at high speed and the consequences of flying, the starter drive with overspeed protection. At present, most domestic small and medium-sized power starters use roller clutch, high-power start-up friction clutch, or speeding off their own form. Because of these structural forms both performance