Pressure sensor component description - GF07.04-P-6060V

ENGINE 272.920 in MODEL 203

ENGINE 272.922 in MODEL 211

ENGINE 272.940 in MODEL 203, 209

ENGINE 272.941 in MODEL 203

ENGINE 272.942 in MODEL 171

ENGINE 272.943 in MODEL 211

ENGINE 272.944 in MODEL 211

ENGINE 272.945 in MODEL 251

ENGINE 272.946 in MODEL 221

ENGINE 272.960 in MODEL 203, 209

ENGINE 272.963 in MODEL 171

ENGINE 272.964 in MODEL 211, 219

ENGINE 272.965 in MODEL 221

ENGINE 272.966 in MODEL 230

ENGINE 272.967 in MODEL 164, 251

ENGINE 272.970 in MODEL 203

ENGINE 272.972 in MODEL 211

ENGINE 272.975 in MODEL 221

ENGINE 273.922 in MODEL 221

ENGINE 273.923 in MODEL 164

ENGINE 273.924 in MODEL 221

ENGINE 273.943 in MODEL 164

ENGINE 273.960 in MODEL 211, 219

ENGINE 273.961 in MODEL 216, 221

ENGINE 273.962 in MODEL 211

ENGINE 273.963 in MODEL 164, 251

ENGINE 273.965 in MODEL 230

ENGINE 273.967 in MODEL 209

ENGINE 273.968 in MODEL 221

Location

The pressure sensor is located at the top on the left cylinder head.

Fig 1: Locating Pressure Sensor (Intake Manifold Pressure) - Engines 272.920/940/941/960/970

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

task

The pressure sensor detects the absolute pressure in the suction pipe. The intake manifold pressure is used to detect the air mass when starting the engine. When the engine has started, the signal from the hot film MAF sensor is monitored.

Function

The intake manifold pressure distorts a diaphragm which has an effect on the piezo resistor. This alters the resistance value of the piezo resistor and influences the output voltage, which is used as information regarding the intake manifold for the ME control unit.

Body

Fig 2: Identifying Pressure Sensor Design - Engines 272.920/940/941/960/970

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.