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奔驰KE发动机空气流量传感器上装有一个电位器,气流感知板下移时带动电位器转动,将空气流量转化为信号输送给发动机ECU。据此,ECU控制电液式压差调节器,从而调节燃油计量分配器差压阀下油室的压力,以便调节发动机各种工况下的供油量。 1、空气流量传感器与发动机ECU的连接 (1)25脚发动机ECU与空气流量传感器的连接如图1所示。 图1 25脚发动机ECU与空气流量传感器的连接 ①ECU 18#脚向传感器提供5V的电压; ②ECU 17#脚接收传感器输出的电压信号; ③传感器的1#脚经ECU 7#脚搭
Benz KE engine air flow sensor is equipped with a potentiometer, air flow sense plate down to bring the potentiometer rotation, the air flow into a signal delivered to the engine ECU. Accordingly, the ECU controls the electro-hydraulic differential pressure regulator so as to adjust the pressure of the oil chamber of the differential valve of the fuel metering distributor so as to adjust the amount of oil supplied under various operating conditions of the engine. 1, air flow sensor and engine ECU connection (1) 25 feet engine ECU and air flow sensor connection as shown in Figure 1. Figure 1 25-pin engine ECU and air flow sensor connection ① ECU 18 # feet to the sensor to provide 5V voltage; ② ECU 17 # pin to receive the sensor output voltage signal; ③ sensor 1 # feet by the ECU 7 #