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2000•JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPANOpen access

Reduction of NOx Emmision in Medium Bore Size 4 Stroke Low Speed Diesel Engine

Takahisa Mimura, Satoru Goto, Hiroaki Kimura, Katsuhisa Ikawa

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Abstract

The study of reducing NOx emission without increasing specific fuel oil consumption was conducted using medium bore size 4-stroke low speed diesel engine. Engine performance simulation was done before engine test. Designed parts owing to the calculation result were evaluated by means of a test on a 6 cylinder 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.

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What this paper is about

The study of reducing NOx emission without increasing specific fuel oil consumption was conducted using medium bore size 4-stroke low speed diesel engine. Engine performance simulation was done before engine test. Designed parts owing to the calculation result were evaluated by means of a test on a 6 cylinder 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.

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Available abstract

The study of reducing NOx emission without increasing specific fuel oil consumption was conducted using medium bore size 4-stroke low speed diesel engine. Engine performance simulation was done before engine test. Designed parts owing to the calculation result were evaluated by means of a test on a 6 cylinder 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.

Key concepts: NOx, Diesel engine, Two-stroke engine, Automotive engineering, Four-stroke engine, Thrust specific fuel consumption, Fuel efficiency, Cylinder

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