Design analysis and simulation modelling of a twin-entry IC engine turbocharger
It is common practice to increase the productivity of an internal combustion engine through the use of a radial turbocharger unit. A turbocharger system will create increased fuel economy and power output diminishing the need for larger capacity engines. Usually the turbocharger unit has one entry port allowing exhaust gases from the engine to spool the internal turbine.
A twin-entry system follows the same principal but with two exhaust entry ports. It is claimed that these types of systems use the pulsating nature of the exhaust gas energy more effectively. This therefore increases general drivability of the engine, with more efficient fuel management and power whilst reducing turbo lag. By investigating previous literature only experimental, and analytical modelling, of a twin-entry turbocharger have more commonly been undertaken by the researchers in this field.
Recently though a comparison between analytical and computational simulation results have been investigated by other researchers. The objective of the author's paper concentrates mainly on the vane geometry of the turbine though and not on the effects of exhaust input design.