Functional description

The fuel pressure sensor delivers a voltage signal to the DDE. A diaphragm in the fuel pressure sensor channels the fuel pressure which is converted into a voltage signal by 4 pressure-sensitive resistors.

The fuel pressure and temperature sensor contains a temperature-dependent resistor that protrudes into the fuel and reaches its temperature. The resistor has a negative temperature coefficient (NTC). The resistance is less as the temperature increases. The resistance changes from 75.5 kΩ to 87.6 Ω temperature-dependent, which corresponds to a temperature of -40 °C to 120 ° C.

Fig 1: Fuel Pressure, Temperature Sensor, Fuel Delivery Line, High Pressure Pump And Pin Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.