Development of New Series in Mitsubishi UE Large Bore 2-Cycle Diesel Engines

摘要

The series of Mitsubishi UEC-LSII engines was completed in 1998. Over 200 engines of this series are in service, mainly as main propulsion engines of the vessels for domestic and foreign operators, and their satisfactory results have been well accepted by those clients. Meantime, we are now developing the new series of LSE (E = Economy, Easy operation & maintenance, Environmentally friendly) type engines, in order to meet the continuous demand for higher power and emission regulations. LSE engines have 15 percent higher power ratio than the equivalent engines LSII type, while staying at the specific fuel consumption lower than the competitors' engines, as was the case for LSII engines, which is one of the advantages of UE engines. For the development of LSE engines, we are utilizing our competent know-how accumulated during long years diesel engine development history, and the latest CAE simulation tool. This process made it possible to overcome the high hurdle of keeping its performance and reliability. For the future emission regulation, our water injection system is available and engine performance diagnosis system has been recently developed.