Diesel Rail Pressure Sensor

Its function is to monitor the fuel pressure in the common rail.

Diesel rail pressure sensor.

As the engine cranks the sensor output rises rapidly to about 1 3 v indicating the idle operating rail pressure of around 280 to 320 bar. Sensor is used by the ecm as a part of the calculation for the duty cycle applied to the fuel pressure control valve and fuel quantity control valve. 20792328 7420792328 for volvo. The engine speed sensor the accelerator pedal sensor for the ecu to know exactly how much power we need and how strongly we requested the engine thus determining the amount of diesel injected the rail pressure sensor it has the role of measuring pressure from rail so that the ecu can control the high pressure pump further if additional pressure is needed and some other temperature sensors and flowmeters.

This sensor is usually located near the middle of the fuel rail and is linked to the engine control unit ecu which is the central computer of a vehicle. This pressure is monitored by a pressure sensor and the difference between the nominal rail pressure value and the measured one is the input signal for the controller. This video is an extract of the automate frps signal voltage low pull up type diagnostics training video. Given its location you can imagine the amount of heat the sensor must absorb and the vibrations it must feel.

So the sensor will eventually fail. 20 00 2 0281002720 diesel engine fuel rail pressure sensor fit for renault laguna megane 1 9 dci. The fuel rail sensor commonly referred to as the fuel pressure sensor is an engine management component that is commonly found on diesel and some gasoline injected vehicles. 0281002706 1800 bar diesel common fuel rail pressure sensor oe.

The pump maintains the rail pressure by continuously delivering fuel to the common rail. With the ignition on and the engine off the sensor output is at 0 5 v corresponding to a rail pressure of 0 bar. The extremely high fuel pressures that direct injec. A fuel rail pressure sensor commonly known as a fuel pressure sensor is used in many diesel and some gasoline engines.

It is a part of vehicle s fuel system and designed to monitor the fuel pressure that is present at the fuel rail. General description the common rail pressure sensor is located on the fuel rail. 20 00 26 displaying 1 to 16.