Fuel Supply System - SSANGYONG KYRON 2010.01 Manual

01-27
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10. FUEL SUPPLY SYSTEM

1) D20DT Engine
According to input signals from various sensors, engine ECU calculates driver's demand
(position of the accelerator pedal) and then controls overall operating performance of engine
and vehicle on that time.
ECU receives signals from sensors via data line and then performs effective engine air-fuel
ratio controls based on those signals. Engine speed is measured by crankshaft speed (position)
sensor and camshaft speed (position) sensor determines injection order and ECU detects
driver's pedal position (driver's demand) through electrical signal that is generated by variable
resistance changes in accelerator pedal sensor. Air flow (hot film) sensor detects intake air
volume and sends the signals to ECU. Especially, the engine ECU controls the air-fuel ratio by
recognizing instant air volume changes from air flow sensor to decrease the emissions (EGR
valve control). Furthermore, ECU uses signals from coolant temperature sensor and air
temperature sensor, booster pressure sensor and barometric sensor as compensation signal to
respond to injection starting, pilot injection set values, various operations and variables.
ENGINE D20DT
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