4 空气流量传感器的检测空气流量传感器是测定吸入发动机的空气流量的传感器。电子控制汽油喷射发动机为了在各种运转工况下都能获得最佳浓度的混合气,必须正确地测定每一瞬间吸入发动机的空气量,以此作为ECU计算(控制)喷油量的主要依据。如果空气流量传感器或线路出现故障,ECU得不到正确的进气量信号,就不能正常地进行喷油量的控制,将造成混合气过浓或过稀,使发动机运转不正常。 4 air flow sensor detection Air flow sensor is measured by the intake air flow sensor. Electronically controlled gasoline injection engine In order to obtain the optimum concentration of the mixture under all operating conditions, the amount of air drawn into the engine at each moment must be accurately measured as the basis for the ECU to calculate (control) the amount of fuel injected . If the air flow sensor or line fails, the ECU can not get the correct air intake signal and can not control the fuel injection quantity normally. As a result, the air mixture becomes too thick or too thin to make the engine run abnormally.