汽车拖拉机使用汽油机和柴油机,它们的起动是靠外力来完成的。当前几乎所有的汽车和大部份轮式拖拉机是用电磁操纵的强制啮合式起动机来发动的。为了在起动发动机后使起动机迅速断电,并驱动小齿轮迅速退回到不啮合状态,我厂专门设计了保护继电器作为起动机的保护装置。采用该装置后,一旦发动机起动后,即能对起动机起到保护作用。否则,由 Automobile tractors use gasoline and diesel engines, and their starting is done by external forces. Almost all cars and most wheeled tractors today are powered by electromagnetically operated, forced-engagement starters. In order to start the engine after the starter quickly power-off and drive the pinion quickly returned to the state does not engage, I plant specifically designed protection relay as a starter protection. With this device, once the engine starts, it can play a protective role on the starter. Otherwise, by