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Home >> BMW >> 2012 >> 535xi GT >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Engine Performance - Functional Description -- F07 >> Engine Performance - Functional Description >> Rail Pressure Sensor >> Functional description
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Functional description

Strain gauge are used for detecting the pressure. A steel membrane equipped with strain gauge in the sensor is deformed by the adjacent pressure. The changes in resistance in the strain gauge are electronically detected by a Wheatstone bridge and evaluated. The measured voltage is then used as an actual value in the rail pressure control.

Fig 1: Fuel-Distribution Rail And Rail Pressure Sensor
G09841533Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 three-pin plug connection
2 Rail pressure sensor
3 Fuel-distribution rail
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