This paper introduces the connection of speed servo adjusting unit and the throttle, simplifies the control circuit of the manual throttle and offers two practical methods of speed testing.
介绍伺服调速及油门机构的连接，简化手油门控制电路，给出两种实用的测速方法；
2
Three types of throttle governing circuits used speed control are analyzed: the entrance throttle governing circuit, the out throttle governing circuit and the bypass throttle governing circuit.