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CHANGED BY EFFECTIVE DATE AFFECTED VIN 13 1913 EXHAUST SYSTEM D27DTP/D27DT (EU4) SM - 2006.08 D27DTP/D27DT (EU4) ENGINE FUEL I N T AKE EXHAUST PRE-HEA TING LUB COOLING SWITCHABLE ECU DIAGNOSIS 1. OVERVIEW AND FEATURES OF VGT (VARIABLE GEOMETRY TURBINE) Overview The VGT turbocharger is a certain type of turbocharger Effect : Increases the output by 10% and torque by 14% compared to conventional turbocharger. (Refer to the graph above.) : When the accelerator pedal is pressed, the proper mixture of fuel and air should be entered into the combustion chamber. However, for the conventional turbocharger, : The shape of turbine blade is change to increase the amount of intake air in low speed range. Therefore, the exhaust gas and smoke due to excessive fuel is reduced. Output and Torque Fuel consumption Exhaust gas VGT TURBOCHARGER WGT T orque Engine RPM • Turbocharger lag The turbocharger is at idle speed when there is no load or it is in the normal driving condition. During this Because of this, it takes time for turbocharger to supply the additional power after the accelerator pedal is NOTE |