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15-28
(6) E-VGT control
a. Overview
E-VGT (Electric-Variable Geometry Turbine) turbocharger system in D20DTF engine uses the
venturi effect that controls the flow rate of exhaust gas by adjusting the passage in turbine
housing. The newly adopted DC motor actuator (E-actuator) controls the E-VGT system more
precisely and faster. To get the high operating power from turbine, the ECU reduces the exhaust
gas passage In low speed range and increases it in high speed range.
b. Components
E-VGT
Accelerator peda
actuator
ECU
(D20DTF)
Coolant
temperature
HFM sensor
Front EGT
T-MAP sensor
Crankshaft pos,
(intake air temp)
sensor
sensor
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