Abstract
In this paper two basic ideas of M.A.N. are shown. The first theme is“Definition of Power”. If it is said that an engine has 10000 PS, what does it mean? In addition to ISO-3046-Definition we need some special rulings for marine diesel engines. M.A.N. proposes two points.
a) Standard ambient conditions should be
air temperature 318°K (45°C)
sea water temperature 305°K (32°C)
air pressure 1 bar
b) Engine performance should be shown with performance field and not only with some particular points such as MCR or SR.
The second theme is“criteria in further development of marine propulsion systems”. The problems of heavy duty oils and two-stage turbo-charging are also discussed.
