MAN B&W
2.04
Page 9 of 9
MAN Diesel
198 69 93-5.3
MAN B&W MC/MC-C/ME/ME-C/ME-B/-GI-TII engines
Example 4: Engine coupled to controllable pitch propeller (CPP) with or without shaft generator
Engine speed
Power
7
5
4
1 2 6
3.3%M
5%M
5%L
1
7
5
1
4
3
S
L
1
L
2
L
3
L
4
Min. speed
Max. speed
Combinator curve for
loaded ship and incl.
sea margin
Recommended range for
shaft generator operation
with constant speed
M
M
Specified MCR of engine
S
Continous service rating of engine
178 39 314.5
Fig. 2.04.08: Engine with Controllable Pitch Propeller
(CPP), with or without a shaft generator
Layout diagram without shaft generator
If a controllable pitch propeller (CPP) is applied,
the combinator curve (of the propeller) will nor-
mally be selected for loaded ship including sea
margin.
The combinator curve may for a given propeller
speed have a given propeller pitch, and this may
be heavy running in heavy weather like for a fixed
pitch propeller.
Therefore it is recommended to use a light run-
ning combinator curve (the dotted curve which
includes the sea power margin) as shown in the
figure to obtain an increased operation margin of
the diesel engine in heavy weather to the limit indi-
cated by curves 4 and 5.
Layout diagram with shaft generator
The hatched area shows the recommended speed
range between 100% and 96.7% of the specified
MCR speed for an engine with shaft generator
running at constant speed.
The service point S can be located at any point
within the hatched area.
The procedure shown in examples 2 and 3 for
engines with FPP can also be applied here for en-
gines with CPP running with a combinator curve.
Load diagram
Therefore, when the engine’s specified MCR point
(M) has been chosen including engine margin, sea
margin and the power for a shaft generator, if in-
stalled, point M may be used in the load diagram,
which can then be drawn.
The position of the combinator curve ensures the
maximum load range within the permitted speed
range for engine operation, and it still leaves a
reasonable margin to the limit indicated by curves
4 and 5.
Summary of Contents for B&W S50ME-B9.3-TII
Page 4: ......
Page 10: ......
Page 11: ...MAN B W MAN Diesel Engine Design 1 ...
Page 12: ......
Page 27: ...MAN B W MAN Diesel Engine Layout and Load Diagrams SFOC 2 ...
Page 28: ......
Page 53: ...MAN B W MAN Diesel Turbocharger Selection Exhaust Gas By pass 3 ...
Page 54: ......
Page 58: ......
Page 59: ...MAN B W MAN Diesel Electricity Production 4 ...
Page 60: ......
Page 92: ......
Page 93: ...MAN B W MAN Diesel Installation Aspects 5 ...
Page 94: ......
Page 124: ......
Page 133: ...MAN B W MAN Diesel List of Capacities Pumps Coolers Exhaust Gas 6 ...
Page 134: ......
Page 154: ......
Page 155: ...MAN B W MAN Diesel Fuel 7 ...
Page 156: ......
Page 170: ......
Page 171: ...MAN B W MAN Diesel Lubricating Oil 8 ...
Page 172: ......
Page 188: ......
Page 189: ...MAN B W MAN Diesel Cylinder Lubrication 9 ...
Page 190: ......
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 ...
Page 222: ......
Page 227: ...MAN B W MAN Diesel Scavenge Air 14 ...
Page 228: ......
Page 239: ...MAN B W MAN Diesel Exhaust Gas 15 ...
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Page 254: ......
Page 255: ...MAN B W MAN Diesel Engine Control System 16 ...
Page 256: ......
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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