Effect of a turbocharger with electrically controlled wastegate on the performance of a marine diesel engine
ZHAI Guangrui
HAN Guoqiang
WANG Yanbin
LIU Wenqi
DUAN Yanqiang
Abstract：In order to improve the low-speed performance of a marine diesel engine,a electronically controlled wastegate system of a turbocharger is developed.The hardware and software of the system are designed,and the bench test are conducted to compare and analyze the effect of three turbochargers(wastegate-less turbocharger,mechanically controlled wastegate turbocharger,and electronically controlled wastegate turbocharger)on the performance of the diesel engine.The bench test results show that the performance of the diesel engine equipped with electronically controlled wastegate turbocharger is better than those equipped with either a wastegate-less turbocharger or a mechanically controlled wastegate turbocharger.Compared to a wastegate-less turbocharger,the electronically controlled wastegate turbocharger improves the low-speed performance of the marine diesel engine.When the load rate is 25％and 50％,it reduces fuel consumption by 6 and 13 g/(kW·h)and lowers exhaust temperature by 50 and 45℃,respectively,while increasing boost pressure after the intercooler by 20 and 50 kPa.
Keywords：diesel engineturbochargerelectronic controlwastegate
Publication Date：2025-11-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 49-53 )