2002 年 37 巻 1 号 p. 58-67
2 stroke low-speed diesel engine has already exceed the brake thermal efficiency of 50% with the use of heavy fuel, that is, it contributes to not only the saving of energy but also prevention of global warming. On the other hand, NOx and SOx are abundantly discharged, and the correspondence is required from the environmental protection.
In this paper, the present and prospective methods of controlling these emissions are described in contrast with the actual conditions and regulations of air pollution from the ships.