The working principle of the automotive air flow meter is to measure the engine intake volume and convert it into an electrical signal input electronic control unit (ECU) to control the fuel injection amount and ignition time. Air flow meters typically contain one or more sensors, such as hot-wire or hot-film sensors, that change the resistance by monitoring the intake flow, which in turn affects the current strength. The ECU uses these electrical signals to calculate the optimal fuel injection and air-fuel ratio
Advantages
High-precision measurement : can accurately measure the intake of air into the engine per second, to ensure that the engine can obtain the best concentration of air-fuel ratio under different working conditions
fast response : can respond to changes in intake volume in a short time to ensure the stability and efficiency of engine operation
high reliability : simple structure, low maintenance cost, and can be stable under various working conditions
