Group 23 EMS 2 Design and function
13
Input signals
The control module receives input signals about the
engines operating conditions and other things from the
following components:
coolant temperature sensor
charge pressure / charge temperature sensor
crankcase pressure sensor
position sensor, camshaft
speed sensor, flywheel
piston cooling pressure sensor
coolant level sensor
oil pressure sensor
oil level sensor and oil temperature sensor
fuel pressure sensor
water in fuel indicator
air filter pressure
air temperature sensor
Output signals
Based on the input signals the control module controls
the following components:
the unit injectors
starter motor
alternator
main relay
pre-heating relay
The information from the sensors give exact data
about prevailing operating conditions and allows the
processor in the control module to, among other
things, calculate correct injection amount, injection
timing and check the engine’s condition.
Cooling water temperature
Boost air temperature
Boost air pressure
Oil pressure
Engine speed
Accelerator setting
Diagnosis
Electronic
control
module
Injection
timing
Fuel
quantity
Camshaft position
Coolant level
Fuel pressure
Crankcase pressure
Water in fuel
Piston cooling pressure
Oil level
Oil temperature
Air temperature
Air filter pressure

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