Mitsubishi 6M70 Workshop Manual page 148

STRUCTURE AND OPERATION
(6) Warm-up acceleration function
Input signals
Water temperature sensor
Accelerator pedal position
sensor
Idling speed adjustment
potentiometer
• The warm-up acceleration function increases engine warm-up by varying the engine's idling speed in accordance
with the engine's coolant temperature. It can operate either automatically or manually. Selection is made using the
idling speed adjustment potentiometer.
13-16
(4) Fuel injection timing control
(4.1) Main injection timing
• The main injection timing is calculated from the fuel injection
quantity and engine speed.
(4.2) Pilot injection timing (pilot interval)
• The pilot injection timing is calculated from the fuel injection
quantity and engine speed.
(5) Fuel injection pressure control
• The fuel injection pressure is calculated from the fuel injection
quantity and engine speed.
Engine electronic
control unit
Comparison
Output signals
operations
Target injection
quantity
Idling speed
control