Existing and Future Demands on the Turbocharging of Modern Large Two-stroke Diesel Engines

Turbocharger development remains one of the key issues for further performance development of large two-stroke diesel engines which power the majority of the world’s shipping. This paper reviews the state of current technology in terms of turbochargers and their interaction with these large engines. Pressure ratio and turbocharger efficiency are the key parameters for further development of large two-stroke engine performance. The paper also looks forward to future requirements of turbocharging systems and comments on concepts such as variable turbine geometry, two-stage turbocharging, internal exhaust gas recirculation and turbochargers with auxiliary drive that have been proposed or are being developed for future application.