MAN

51/60DF
The MAN 51/60DF runs on either Benefits at a glance
liquid or gaseous fuels and can
switch seamlessly from liquid to gas – Available with two-stage
and vice versa during operation, turbocharging
giving you the benefits of a high fuel – Optimized performance settings
flexibility. The engine can even be – Start and stop in gas mode
started in gas mode and requires only – Fuel and operational flexibility with
a very small amount of pilot fuel.​ HFO, diesel, natural gas and
Benefitting from the excellent biogas
robustness and reliability of its – Optimized variants for tropical
predecessors, the MAN 51/60DF conditions
also ensures low emissions and – High single cycle efficiency
high efficiency.

Energy &
storage
systems
 MAN 51/60DF
High efficiency and high power
Dimensions

Cyl. No. 6L 12V 18V

L 8,464 mm 333.2 in 9,970 mm 392.5 in 13,489 mm 531.1 in
a d s 10,134 mm 399.0 in s s
H 5,807 mm 228.6 in 6,450 mm 253.9 in 6,450 mm 253.9 in
W 3,156 mm 124.3 in 4,884 mm 192.3 in 4,884 mm 192.3 in
Engine weight 171.6 t 378,313 lb 293.8 t 647,718 lb 416.8 t 918,887 lb
s s s 297.6 t 656,095 lb s s

Output
Cyl. No. 6L 12V 18V
Output mech. kW 6,300 6,900 12,600 13,800 18,900 20,700
Speed rpm 500 /514 500 /514 500 /514 500 /514 500 /514 500 /514
Frequency Hz 50 /60 50 /60 50 /60 50 /60 50 /60 50 /60

High efficiency with two-stage turbocharging

Dimensions W L

Cyl. No. 18V

L 19,100 mm 751.9 in
H 9,023 mm 355.2 in H
W 4,700 mm 185.0 in
Engine weight 457.6 t 1,008,835 lb

Output
L
Cyl. No. 18V
Output mech. kW 18,900
Speed rpm 500 /514
Frequency Hz 50 /60

Dimensions and weight +/-10%

Values according to ISO 3046-1:2002; ISO 15550:2002. Last updated August 2021

Engine Features

General data Engine automation and control – Robust conventional main injection
– Engine cycle: four-stroke – MAN SaCoSone safety and control system
– No. of cylinders: 6L, 12V, 18V system on engine, developed by – Low pressure gas system (5 bar(g) /
– Bore: 510 mm / 20.08 in, MAN 72.52 psi at inlet of gas valve unit) ​
Stroke: 600 mm / 23.62 in
Turbocharging system Starting system
– 2-stage turbocharging improves – Starting air valves in cylinder head
Fuel efficiency comparison
efficiency significantly​
– MAN constant pressure Applications
turbocharging system ​ – Whenever fuel flexibility is of benefit
Two-stage turbocharging
– Individual engine / turbocharger – Locations with non-constant gas supply
optimization matching on site – Installations with gas operation at a later
High efficiency date
Fuel & gas system – Locations with highly volatile fuel prices
High power – Common rail pilot fuel injection MAN Energy Solutions
system info@man-es.com
47% 50% – Amount of pilot fuel ~1% www.man-es.com
All data provided in this document is non-binding. This data serves informational purposes only and is not guaranteed in any way. Depending on the subsequent specific individual projects, the
relevant data may be subject to changes and will be assessed and determined individually for each project. This will depend on the particular characteristics of each individual project, especially
specific site and operational conditions. Copyright © MAN Energy Solutions. D2366631-N3 Printed in Germany GKM-AUG-21080