Page 769 - Foton Workshop Manual - Auman EST-M

Engine section – Engine (Cummins ISF3.8) EG - 253

Instruction of system part IN

S/N Part QTY Function
DI
Optimize the control system according to the signal provided by the
1 Engine ECM 1
sensor to adapt to the working condition of engine
EG
For measuring engine speed and determining engine phase, the

2 Camshaft position sensor 1 camshaft signal sensor together with the crankshaft position sensor
TR
provides the correct stop signal for Cylinder 1 to ECU.

To measure the engine speed. ECM calculates the engine speed as per
3 Crankshaft position sensor 1 AX
this signal.

Measure the engine coolant temperature to determine the working
4 Coolant temperature sensor 1 FR
condition of engine

5 Injector 4 Inject the fuel according to the signal from ECM
ST
Control the oil supply quantity from the oil pump plunger to the rail so

6 Metering cell 1 as to meet the set pressure of common rail system and form a close loop
BR
control for rail pressure with the fuel pressure sensor

To provide the transient common-rail fuel pressure for ECM to realize
7 Fuel pressure sensor 1 BW
the closed loop control of ECM for common rail pressure.

Sense the vehicle at different altitude and monitor the pressure outside
8 Atmospheric pressure sensor 1 EL
of vehicle to adjust the injection quantity and the working of engine

9 High pressure oil pump 1 Provide high pressure fuel to the high pressure oil rail

10 High pressure oil rail 1 Keep the internal fuel at high pressure

11 Pre-heater 4 At cold weather, heat the gas in cylinder to start the engine easily.

Intake manifold Measure the air temperature and flow going into the cylinder to control
12 1
pressure/temperature sensor injection

Measure the water quantity in the filter and remind the driver to
13 Fuel moisture sensor 1
discharge water

Measure the engine oil pressure. Reminder the driver to prevent
14 Engine oil pressure sensor 1
damaging the engine

15 Fuel pre-filter 1 Remove large impurities out of fuel to main the fuel quality.

17 Fuel primary filter 1 Filter out the water and small impurities in the fuel

18 Fuel filter 1 Filter out the impurities in the fuel to protect the injector and other parts

19 Fuel tank 1 Reservoir fuel

EG-253