DFI [EVE] idle speed control function

GF07.13-P-3002H

11.6.96

ENGINE 604.910 in MODEL 202.121 to 31.7.96

ENGINE 604.912 in MODEL 210.004 to 31.5.96

P07.13-0435-81

B11/4 Coolant temperature sensor

K1 Overvoltage protection relay

K40 Relay module

L5/6 Crankshaft position sensor

N3/8 DFI [EVE] control module

Y23/2 Distributor pump

Y23/2y2 Check valve

Y23/2y4 Supply valve

Y23/2b1 Fuel temperature sensor

Task

To keep idle speed at the specified rpm regardless of engine load.

Function

The DFI [EVE] control module (N3/8) computes the engine speed using the signal delivered by the crankshaft position sensor (L5/6), and coolant temperature from the signal sent by the coolant temperature sensor (B11/4).

It then compares actual values to specifications and adjusts idle speed as required by alternately actuating the supply valve (Y23/2y4) and the check valve (Y23/2y2). In the event that the coolant temperature sensor (B11/4) fails, the fuel temperature sensor (Y23/2b1) will deliver a substitute signal.

DFI [EVE] control module location/task/function		GF07.13-P-3102H
Crankshaft position sensor location/task/design/function		GF07.04-P-4116H
Coolant temperature sensor location/task/design/function		GF07.04-P-5026H
Supply valve location/task/design/function		GF07.05-P-5003H
Check valve location/task/design/function		GF07.05-P-5004H
Fuel temperature sensor location/task/design/function		GF07.04-P-5023AH
Overvoltage protection relay location/task/design/function	Model 202	GF07.13-P-3100H
Relay module location/task/design/function	Model 210	GF07.13-P-3101H

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