GF07.16-P-3019P CDI Tank Protection Function

GF07.16-P-3019P CDI Tank Protection Function
ENGINE 642.9 in MODEL 209.3 /4, 211.0 /2 /6, 219.3
ENGINE 642.8 /9 in MODEL 461.3
ENGINE 642.9 in MODEL 463.3 up to 31.5.12
ENGINE 642.9 in MODEL 164.1 /8, 203.0 /2, 204.0 /2, 221.0 /1, 251.0 /1 up to model year 2008
/YoM 07

Increasing the fuel pressure by 4.5 bar up to 1600 bar using the common rail high pressure pump also causes the fuel temperature to increase. To protect the fuel tank from overheating, the CDI control unit (N3/9) reads the fuel temperature sensor (B50) (model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 461, 463) or the fuel temperature sensor (B50) (model 204.0/2) and thus monitors the temperature of the fuel supplied to the common rail high-pressure pump. If the temperature of the fuel delivered to the common rail high pressure pump goes above 90°C the injection quantity and rail pressure are automatically reduced. This causes the fuel less to be less compressed. The quantity control valve (Y94) diverts excess fuel back into the tank.
If the temperature of the fuel supplied to the common rail high pressure pump falls below 90°C, the tank protection function is deactivated by the CDI control unit.