Afterglowing function - GF15.20-P-3001HB

ENGINE 604.910 in MODEL 202.121 as of 1.8.96, 202.182

ENGINE 604.912 in MODEL 210.004 as of 1.6.96

ENGINE 604.915 in MODEL 202.122 /180

ENGINE 604.917 in MODEL 210.003

ENGINE 605.960 in MODEL 202.128 as of 1.4.96, 202.188

ENGINE 605.912 in MODEL 210.010 /210 /610

ENGINE 606.912 in MODEL 210.020 as of 1.6.96 with CODE (491) U.S. version

ENGINE 606.962 in MODEL 210.025/225

ENGINE 606.961 in MODEL 140.135

ENGINE 605.962 in MODEL 210.015 /215

Fig 1: Identifying Afterglowing Function Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

To improve engine warm-up properties
To prevent the formation of blue smoke after cold starts
To improve engine flow following cold starts
To stabilize cold start speed

Function

After the engine is started, afterglowing takes place for a period dependent on the coolant temperature. The glow output stage (N14/2) receives a signal from the IFI [ERE] control module (N3/7) or DFI [EVE] control module (N3/8) telling it how long the afterglow time should be.

If the coolant temperature (T) is <60°C afterglowing is limited to a maximum of 180 s.

In the event that no signal is received from the coolant temperature sensor (B11), the afterglow time is automatically set to 30 s.

Glow output stage location/task/design/function		GF15.20-P-2100C
Glow plugs location/task/design/function		GF15.20-P-3101H
Coolant temperature sensor location/task/ design/function		GF07.04-P-5026C
DFI [EVE] control module location/task/function	Engine 604	GF07.13-P-3102H
IFI [ERE] control module location/task/function	Engine 605, 606	GF07.12-P-3102H