A mass airflow sensor is used to find out the mass of air entering a fuel-injected engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. The sensing element in MAF sensors can be easily contaminated causing hard starting, rough idle, hesitation and stalling problems.

一个质量空气流量传感器是用来找出质量的空气进入一个燃油喷射发动机。空气质量信息是必要的发动机控制单元(ECU)来平衡和交付正确的燃料质量的发动机。在传感器的传感元件应用可以很容易污染造成硬起动,粗糙的闲置,犹豫和拖延问题。