MAN B&W
2.06
Page 1 of 1
MAN Diesel
198 38 36-3.4
MAN B&W 70-26 MC/MC-C/ME/ME-C engines
Specific Fuel Oil Consumption, ME versus MC engines
Fig. 2.06.01: Example of part load SFOC curves for ME and MC with fixed pitch propeller
198 97 389.3
As previously mentioned the main feature of the
ME/ME-C engine is that the fuel injection and the
exhaust valve timing are optimised automatically
over the entire power range, and with a minimum
speed down to around 15-20% of the L
1
speed,
but around 20-25% for MC/MC-C.
Comparing the specific fuel oil comsumption
(SFOC) of the ME and the MC engines, it can be
seen from the figure below that the great advan-
tage of the ME engine is a lower SFOC at part
loads.
It is also noted that the lowest SFOC for the ME/
ME-C engine is at 70% of M, whereas it is at 80%
of M for the MC/MC-C/ME-B engine.
For the ME engine only the turbocharger matching
and the compression ratio (shims under the piston
rod) remain as variables to be determined by the
engine maker / MAN Diesel & Turbo.
The calculation of the expected specific fuel oil
consumption (SFOC) valid for standard high load
optimised engines can be carried out by means of
the following figures for fixed pitch propeller and
for controllable pitch propeller, constant speed.
Throughout the whole load area the SFOC of the
engine depends on where the specified MCR
point (M) is chosen.
30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105
∆
SFOC
g/kWh ±5%
Engine power, % of specified MCR point M
MC
ME
Summary of Contents for B&W S50ME-B9.3-TII
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Page 11: ...MAN B W MAN Diesel Engine Design 1 ...
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Page 27: ...MAN B W MAN Diesel Engine Layout and Load Diagrams SFOC 2 ...
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Page 53: ...MAN B W MAN Diesel Turbocharger Selection Exhaust Gas By pass 3 ...
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Page 59: ...MAN B W MAN Diesel Electricity Production 4 ...
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Page 93: ...MAN B W MAN Diesel Installation Aspects 5 ...
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Page 133: ...MAN B W MAN Diesel List of Capacities Pumps Coolers Exhaust Gas 6 ...
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Page 155: ...MAN B W MAN Diesel Fuel 7 ...
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Page 171: ...MAN B W MAN Diesel Lubricating Oil 8 ...
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Page 189: ...MAN B W MAN Diesel Cylinder Lubrication 9 ...
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Page 199: ...MAN B W MAN Diesel Piston Rod Stuffing Box Drain Oil 10 ...
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Page 203: ...MAN B W MAN Diesel Central Cooling Water System 11 ...
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Page 209: ...MAN B W MAN Diesel Seawater Cooling System 12 ...
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Page 221: ...MAN B W MAN Diesel Starting and Control Air 13 ...
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Page 227: ...MAN B W MAN Diesel Scavenge Air 14 ...
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Page 239: ...MAN B W MAN Diesel Exhaust Gas 15 ...
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Page 255: ...MAN B W MAN Diesel Engine Control System 16 ...
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Page 265: ...MAN B W MAN Diesel Vibration Aspects 17 ...
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Page 281: ...MAN B W MAN Diesel Monitoring Systems and Instrumentation 18 ...
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Page 307: ...MAN B W MAN Diesel Dispatch Pattern Testing Spares and Tools 19 ...
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Page 323: ...MAN B W MAN Diesel Project Support and Documentation 20 ...
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Page 333: ...MAN B W MAN Diesel Appendix A ...
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