MAN B&W
4.01
Page 5 of 6
MAN Diesel
198 43 000.2
MAN B&W K98MC/MC-C/ME/ME-C, S90MC-C/ME-C,
K90MC-C/ME/ME-C, S80MC/MC-C/ME-C, K80MC-C/ME-C,
S70MC/MCC/ME-C/ME-GI, L70MCC/ME-C, S65ME-C/ME-GI,
S60MC/MC-C/ME-C/ME-GI/ME-B, L60MC-C/ME-C,
S50MC/MC-C/ME-C/ME-B
The power from the crankshaft gear is trans-
ferred, via a multidisc clutch, to an epicyclic
variableratio gear and the generator. These are
mounted on a common bedplate, bolted to brack-
ets integrated with the engine bedplate.
The BWIII/RCF unit is an epicyclic gear with a
hydrostatic superposition drive. The hydrostatic
input drives the annulus of the epicyclic gear in
either direction of rotation, hence continuously
varying the gearing ratio to keep the genera-
tor speed constant throughout an engine speed
variation of 30%. In the standard layout, this is
between 100% and 70% of the engine speed at
specified MCR, but it can be placed in a lower
range if required.
The input power to the gear is divided into two
paths – one mechanical and the other hydrostatic
– and the epicyclic differential combines the
power of the two paths and transmits the com-
bined power to the output shaft, connected to the
generator. The gear is equipped with a hydrostatic
motor driven by a pump, and controlled by an
electronic control unit. This keeps the generator
speed constant during single running as well as
when running in parallel with other generators.
The multidisc clutch, integrated into the gear in-
put shaft, permits the engaging and disengaging
of the epicyclic gear, and thus the generator, from
the main engine during operation.
An electronic control system with a RENK control-
ler ensures that the control signals to the main
electrical switchboard are identical to those for
the normal auxiliary generator sets. This applies
to ships with automatic synchronising and load
sharing, as well as to ships with manual switch-
board operation.
Internal control circuits and interlocking functions
between the epicyclic gear and the electronic
control box provide automatic control of the func-
tions necessary for the reliable operation and
protection of the BWIII/RCF unit. If any monitored
value exceeds the normal operation limits, a warn-
ing or an alarm is given depending upon the ori-
gin, severity and the extent of deviation from the
permissible values. The cause of a warning or an
alarm is shown on a digital display.
Extent of delivery for BWIII/RCF units
The delivery comprises a complete unit ready to
be builton to the main engine. Fig. 4.02.01 shows
the required space and the standard electrical
output range on the generator terminals.
Standard sizes of the crankshaft gears and the
RCF units are designed for:
700, 1200, 1800 and 2600 kW, while the generator
sizes of make A. van Kaick are:
Type
DSG
440 V
1800
kVA
60 Hz
r/min
kW
380 V
1500
kVA
50 Hz
r/min
kW
62
M24
707
566
627
501
62
L14
855
684
761
609
62
L24
1,056
845
940
752
74
M14
1,271
1,017
1,137
909
74
M24
1,432
1,146
1,280
1,024
74
L14
1,651
1,321
1,468
1,174
74
L24
1,924
1,539
1,709
1,368
86
K14
1,942
1,554
1,844
1,475
86
M14
2,345
1,876
2,148
1,718
86
L24
2,792
2,234
2,542
2,033
99
K14
3,222
2,578
2,989
2,391
In the event that a larger generator is required,
please contact MAN Diesel.
If a main engine speed other than the nominal is
required as a basis for the PTO operation, it must
be taken into consideration when determining the
ratio of the crankshaft gear. However, it has no
influence on the space required for the gears and
the generator.
The PTO can be operated as a motor (PTI) as well
as a generator by making some minor modifica-
tions.
178 34 893.1
Summary of Contents for B&W S50MC-C8-TII
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Page 18: ......
Page 19: ...MAN B W MAN Diesel Engine Design 1 ...
Page 20: ......
Page 35: ...MAN B W MAN Diesel Engine Layout and Load Diagrams SFOC 2 ...
Page 36: ......
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Page 64: ......
Page 65: ...MAN B W MAN Diesel Turbocharger Selection Exhaust Gas By pass 3 ...
Page 66: ......
Page 72: ......
Page 73: ...MAN B W MAN Diesel Electricity Production 4 ...
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Page 106: ......
Page 107: ...MAN B W MAN Diesel Installation Aspects 5 ...
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Page 170: ......
Page 171: ...MAN B W MAN Diesel List of Capacities Pumps Coolers Exhaust Gas 6 ...
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Page 192: ......
Page 193: ...MAN B W MAN Diesel Fuel 7 ...
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Page 209: ...MAN B W MAN Diesel Lubricating Oil 8 ...
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Page 223: ...MAN B W MAN Diesel Cylinder Lubrication 9 ...
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Page 233: ...MAN B W MAN Diesel Piston Rod Stuffing Box Drain Oil 10 ...
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Page 237: ...MAN B W MAN Diesel Central Cooling Water System 11 ...
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Page 243: ...MAN B W MAN Diesel Seawater Cooling System 12 ...
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Page 255: ...MAN B W MAN Diesel Starting and Control Air 13 ...
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Page 263: ...MAN B W MAN Diesel Scavenge Air 14 ...
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Page 277: ...MAN B W MAN Diesel Exhaust Gas 15 ...
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Page 293: ...MAN B W MAN Diesel Engine Control System 16 ...
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Page 309: ...MAN B W MAN Diesel Vibration Aspects 17 ...
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Page 325: ...MAN B W MAN Diesel Monitoring Systems and Instrumentation 18 ...
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Page 349: ...MAN B W MAN Diesel Dispatch Pattern Testing Spares and Tools 19 ...
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Page 389: ...MAN B W MAN Diesel Project Suppport and Documentation 20 ...
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Page 399: ...MAN B W MAN Diesel Appendix A ...
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