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ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY TURBOCHARGER (VGT) 57 Description Figure 45 Turbocharger components 1. Air inlet 2. Exhaust outlet 3. Compressor outlet 4. Exhaust inlet 5. Turbocharger control valve 6. Oil supply tube 7. Turbocharger mounting bracket Operation The key feature of the VGT is actuated vanes The vanes modify flow characteristics of exhaust gases through the turbine An additional benefit is lower exhaust emissions. The VGT is a closed loop system that uses the monitor EBP and adjust the duty cycle to the VGT to The solenoid receives a pulse width modulated signal Actuated vanes are mounted around the inside When the unison ring moves, all vanes move to the same position. Unison ring |