GF07.61-P-3011AM ME-SFI Post-Start Enrichment Function

GF07.61-P-3011AM ME-SFI Post-start Enrichment Function
ENGINE 113.990 in MODEL 211, 219
ENGINE 113.991 in MODEL 215, 220
ENGINE 113.992 in MODEL 230 up to Model Year 2008
ENGINE 113.993 in MODEL 463 up to 31.5.12
ENGINE 113.995 in MODEL 230 up to Model Year 2008





B11/4 Coolant temperature sensor
K40/4 Passenger-side fuse and relay module, (model 230)
K40/7 Right front fuse and relay module (model 215, 220)
L5 Crankshaft position sensor
N3/10 ME control unit
N10/1 Driver-side SAM control unit with fuse and relay module (model 211, 219)
N10/1 Front signal acquisition and actuation module (SAM) (model 463)
N15/3 EGS control unit
Y62 Fuel injection valves
X11/4 Data link connector

CAN Data bus (Controller Area Network)

After a cold start the fuel-air mixture is enriched for a short time to ensure that the engine runs smoothly.
Post-start enrichment compensates for the fuel which has precipitated on the cylinder barrels.

The post-start enrichment is dependent on:
^ Coolant temperature at start
^ Duration after start
^ Selector lever position
^ Correction programming with STAR DIAGNOSIS





A Enrichment rate

a Start
b Start of cutoff of post-start enrichment
c Start of warm-up enrichment

t Time
t1 Starting mixture enrichment (duration e.g. 2 s)
t2 Post-start enrichment (duration e.g. 15 seconds at coolant temperature of 15 °C)
t3 Warm-up enrichment (duration dependent on coolant temperature)