ME-SFI part load/full load operation, function - GF07.61-P-3016V

ENGINE 272.920 in MODEL 203 up to Model Year 8

ENGINE 272.922 in MODEL 211

ENGINE 272.940 in MODEL 203 up to Model Year 8

ENGINE 272.941 in MODEL 203 up to Model Year 8

ENGINE 272.942 in MODEL 171 up to Model Year 8

ENGINE 272.943 in MODEL 211, 219

ENGINE 272.944 in MODEL 211

ENGINE 272.945 in MODEL 251 up to Model Year 8

ENGINE 272.946 in MODEL 221 up to Model Year 8

ENGINE 272.960 in MODEL 203 up to Model Year 8

ENGINE 272.963 in MODEL 171 up to Model Year 8

ENGINE 272.964 in MODEL 211, 219

ENGINE 272.965 in MODEL 221 up to Model Year 8

ENGINE 272.966 in MODEL 230 up to Model Year 8

ENGINE 272.967 in MODEL 164, 251 up to Model Year 8

ENGINE 272.970 in MODEL 203 up to Model Year 8

ENGINE 272.972 in MODEL 211

ENGINE 272.975 in MODEL 221 up to Model Year 8

ENGINE 273.922 in MODEL 221 up to Model Year 8

ENGINE 273.923 in MODEL 164 up to Model Year 8

ENGINE 273.924 in MODEL 221 up to Model Year 8

ENGINE 273.960 in MODEL 211, 219

ENGINE 273.961 in MODEL 216, 221 up to Model Year 8

ENGINE 273.962 in MODEL 211

ENGINE 273.963 in MODEL 164, 251 up to Model Year 8

ENGINE 273.965 in MODEL 230 up to Model Year 8

ENGINE 273.967 in MODEL 209

ENGINE 273.968 in MODEL 221 up to Model Year 8

ENGINE 272.940 in MODEL 209

ENGINE 272.960 in MODEL 209

Shown on engine 272

Fig 1: ME-SFI Part Load/Full Load Operation Function Diagram

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Part load operation: When the engine is at operating temperature optimal emission levels and good fuel consumption are assured in combination with the lambda control.

Full load operation: Maximum engine torque is produced at a pedal value of > 90 %. The injection time is extended accordingly for this purpose.

The particular quantity of fuel is metered to the engine in line with the performance map. The fuel quantity depends on:

Coolant temperature
Intake air temperature (only in warming-up phase)
Engine speed
Engine load
Closed-loop mixture control
Intake manifold length
Tumble flap position
Camshaft position
Ignition angle.

Component description for the ME-SFI [ME] control unit		GF07.61-P-6000V
Component description for the coolant temperature sensor		GF07.04-P-6040V
Component description for the camshaft Hall sensor		GF07.04-P-6020V
Component description for the crankshaft Hall sensor		GF07.04-P-6220V
Component description for the variable intake manifold switchover valve		GF09.20-P-6001V
Component description for the intake manifold tumble flap switchover valve		GF07.05-P-6030V
Component description for the hot film MAF sensor		GF07.07-P-6000V
Component description for the accelerator pedal sensor		GF30.20-P-2010V
Component description for the throttle valve actuator		GF30.20-P-2020V
Component description for the position sensor tumble flap		GF07.04-P-6230V
Component description for an O₂ sensor	O2 sensors upstream of TWC	GF07.04-P-6100V
Component description for an O₂ sensor	O2 sensors downstream of TWC	GF07.04-P-6100VA
Component description for the knock sensor		GF07.04-P-6030V
Component description for the camshaft solenoid		GF05.20-P-2100V
Component description for fuel injection valves		GF07.03-P-6010V