ACT系列调节阀是燃气发动机专用调节阀，其功能是作为发动机空燃比控制的执行元件，控制系统根据控制目标，利用调节阀驱动蝶门，控制发动机的混合气、空气或燃气的进气量，实现空燃比的控制策略。

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