抄録
The study of reducing NOx emission in marine diesel engine without increasing specific fuel oil consumption is a matter of no little interest to the engine manufacturer. Engine performance simulation was done before engine test. Optimized design components owing to the calculation predict of reducing NOx were evaluated by means of a test on a 6 cylinder medium bore size 4-stroke low speed diesel engine (bore: 340mm, stroke: 680mm, rated engine speed: 280min-1). From these studies, practical technique of reducing NOx emission and specific fuel oil consumption was found, and this improved NOx emission level is within IMO NOx regulation. This paper reports these engineering findings.
