Function, method and pressure parameters of fuel oil rail pressure sensor
ECM uses this sensor signal to determine the fuel pressure in the oil rail and also uses it to calculate the fuel supply in the operating range of 0 to 1500Bar. Sensor failure can cause engine power loss, speed reduction or even stop. The output signal voltage parameter value of the fuel oil rail pressure sensor under different fuel pressures can be divided into: Relative pressure sensor: the reference pressure when measuring pressure is atmospheric pressure, so its measurement value when measuring atmospheric pressure is 0. Absolute pressure sensor: the reference pressure when measuring pressure is vacuum, and the measured pressure value is absolute pressure maintenance method adopts three-wire type. Two power lines provide 5V working voltage to the sensor, and one signal line provides pressure signal voltage to the ECM.
