ABSTRACT
Turbocharging is perhaps the best way to increase the performance of a reciprocating internal combustion engine, gasoline or Diesel. While the basic concept is simple, the subtleties of a turbocharger system are actually very complex. The purpose of this article is to investigate the functioning of new innovative two stages turbochargers under the aspects of exploring the limits of this new design and make an optimisation study in order to pinpoint the influences of the two pressure stages upon the overall turbocharger behaviour. The software to be used across the numerical experiment is ANSYS 16 (CFX and Design Explorer. The main conclusion is that this new innovative arrangement is depending for its final working parameters on the speed of the LP Rotor as main contributor to the useful delivered pressure and the speed of the HP Rotor up-on the reaction time of the device, this being massively shortened by the presence of this stage.
