AC系列执行器是燃气发动机专用执行器，其功能是作为发动机调速控制与空燃比控制的执行元件，控制系统根据控制目标，利用执行器驱动蝶门，控制发动机的混合气、空气或燃气的进气量，实现调速控制或空燃比的控制策略。

The AC series actuator is a specialized actuator for gas engines. Its function is to serve as an actuator for engine speed control and air fuel ratio control. The control system uses the actuator to drive the butterfly valve according to the control objectives, control the intake volume of the engine's mixture, air, or gas, and achieve speed control or air fuel ratio control strategies.