One Dimensional Simulation Study of Active Control Turbocharger (ACT)

Abstract

This paper presents the comparative study between Variable Geometry Turbocharger (VGT) and a new type of turbocharging technique called Active Control Turbocharger (ACT). One dimensional simulation package was used to model a 13L diesel engine, and simulation was run for both VGT and ACT operating modes. The study was carried out for the engine speed from 800RPM to 2000 RPM, and for the fuel-to-air (F/A) ratio from 0.017 to 0.057. The simulation results showed that ACT improved the performance of engine greatly at low engine speed zone, with the greatest improvement in brake power up to 50.6%. Meanwhile, the fuel efficiency was also found to reduce by maximum of 5.6 g/kW-h for ACT engine as compared to VGT engine at low engine speed zone.