Computation and analysis of multi-turbocharger sequential turbo-charging of a marine high-speed diesel engine

The paper introduces the configuration and working principle of the sequential turbo-charging (STC) system of multi-turbocharger, and builds a computational model for a marine V type high-speed diesel engine with STC system of 4 turbochargers (4TC). The results of calculation show that not only the performances of low load operating mode of a diesel engine are improved obviously by use of multi-turbocharger STC system, but also the operating range is enlarged effectively when the diesel engine is used as a marine main engine.