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F E A T U R E E N GI N E S


S E T TI N G A N E W B E N C H M A R K I N D U A L - F U E L E F FI CI E N C Y


B y D a vi d Ti n sl e y , C orr e s p o n d e nt


R ai si n g it s g a m e i n t h e wi d e- b or e, m e di u m- s p e e d e n gi n e st a k e s, M A N E n er g y S ol uti o n s h a s i ntr o d u c e d it s m o st p o w erf ul d u al-f u el, f o ur- str o k e e n gi n e t o d at e. S p a n ni n g t h e 7, 8 0 0- 1 8, 2 0 0 k W m a xi m u m o ut p ut r a n g e, t h e 4 9 / 6 0 D F d e si g n e x c e e d s t h e l ar g er 5 1 / 6 0 D F i n p ot e n c y, w hil e c o n s u mi n g l e s s f u el, s u c h t h at it i s cl ai m e d t o a c hi e v e a cl a s s-l e a di n g st a n d ar d of e ffi ci e n c y i n b ot h g a s a n d di e s el m o d e s.


T h e t e c h n ol o gi c al pr o gr e s si o n i m pli cit i n t h e l at e st a d diti o n t o t h e A u g s b ur g p ortf oli o i s t e st a m e nt t o t h e i nt e n sit y of c o m p etiti o n i n t h e m ar k et s e g m e nt, n ot wit h st a n di n g t h e v er y f e w pl a y er s i n v ol v e d. T h e 4 9 / 6 0 pl atf or m o n w hi c h t h e d u al-f u el e n gi n e i s b a s e d e m b o di e s l o n g-t er m t hi n ki n g i n b e st o wi n g a m ulti-f u el c a p a bilit y a n d a d a pt a bilit y, a c o n c e pt w hi c h i s al s o pi v ot al t o t h e si mil arl y p o w er e d 4 6 T S- D F f o ur- str o k e d e v el o p e d b y W ärt sil ä.


T h e M A N 4 9 / 6 0 D F h a s a m a xi m u m c o nti n u o u s r ati n g of 1, 3 0 0 k W p er c yli n d er at 6 0 0r p m, c o m p ar e d t o t h e 1, 1 5 0 k W/ c yl of t h e hi g h - p o w er v ari a nt of t h e


5 1 / 6 0 D F r u n ni n g at 5 0 0 / 5 1 4r p m, a n d i s s u p eri or i n t er m s of f u el - b ur ni n g p erf or m a n c e. T h e o ut p ut i s, h o w e v er, o n a p ar wit h t h at of t h e 4 5 / 6 0 C R di e s el e n gi n e a n n o u n c e d a f e w y e ar s a g o, b ut a b o v e t h at of t h e 1, 2 0 0 k W/ c yl at 5 0 0 / 5 1 4r p m of t h e 4 8 / 6 0 C R d e si g n, w hi c h t h e 4 5 / 6 0 C R w a s i nt e n d e d t o e v e nt u all y s u p er s e d e.


I n t er m s of f u el e ffi ci e n c y, t h e 4 9 / 6 0 D F i s d e s cri b e d a s s e tti n g a n e w b e n c h m ar k. At 8 5 % m a xi m u m c o nti n u o u s r ati n g ( M C R), f u el c o n s u m pti o n i s q u a nti fi e d a s 6, 9 9 0 k J / k W h i n g a s m o d e a n d 1 7 1 g / k W h o n li q ui d f u el, m a ki n g f or a si g ni fi c a nt di ff er e nti al i n r el ati o n t o it s d u al-f u el pr e d e c e s s or, t h e 5 1 / 6 0 D F, w hi c h w a s d e v el o p e d fr o m t h e 4 8 / 6 0 di e s el e n gi n e.


F or e x a m pl e, v e e-t y p e m o d el s of t h e 5 1 / 6 0 D F i n it s ‘ Hi g h E ffi ci e n c y’ v er si o n ar e c at al o g u e d a s o ff eri n g 1 7 5. 5 g / k W h a n d 7,1 5 0 k J / k W h i n di e s el a n d g a s m o d e s, r e s p e cti v el y, at 8 5 % M C R, w hil e t h e ‘ Hi g h P o w er’ v ari a nt i n v e e c o n fi g ur ati o n ( sli g htl y l e s s f u el- h u n gr y t h a n t h e i n-li n e m o d el s) b ur n s 1 8 1. 0 g / k W h a n d 7, 2 5 0-


P O T E N C Y I S M E L D E D WI T H L O N G - T E R M F U E L A D A P T A BI LI T Y I N M A N’ S L A T E S T O F F E RI N G, T H E 4 9 / 6 0 D F F O U R - S T R O K E D E SI G N. S O U R C E: M A N E S


3 4 T H E N A V A L A R C HI T E C T


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