MAN B&W
4.01
Page 4 of 5
MAN Diesel
198 51 95-0.3
MAN B&W S46MC-C7/8, S46ME-B8, S42MC7,
S40MC-C9, S40ME-B9, S35MC-C9, S35MC7,
S35ME-B9, L35MC6, S26MC6
PTO/RCF
Free standing generator, BW II/RCF
(Fig. 4.01.01, alternative 2)
The PTO/RCF generator systems have been de-
veloped in close cooperation with the German
gear manufacturer RENK. A complete package
solution is offered, comprising a flexible coupling,
a step-up gear, an epicyclic, variable-ratio gear
with built-in clutch, hydraulic pump and motor,
and a standard generator.
For marine engines with controllable pitch propel-
lers running at constant engine speed, the hy-
draulic system can be dispensed with, i.e. a PTO/
GCR design is normally used, see Fig. 4.01.01,
alternative 5 or 6.
Fig. 4.01.03 shows the principles of the PTO/RCF
arrangement.
The epicyclic gear of the BW II/RCF unit has 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.
178 00 45-5.0
Fig. 4.01.03: PTO with RENK constant frequency gear: BW II/RCF, option: 4 85 203
Operator control panel
(in switchboard)
To panel
Hydrostatic control
Hydrostatic motor
Output shaft
Hydrostatic pump
Multidisc clutch
Input shaft
Controller
Terminal
Summary of Contents for B&W L35MC6-TII
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Page 19: ...MAN B W MAN Diesel Engine Design 1 ...
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Page 35: ...MAN B W MAN Diesel Engine Layout and Load Diagrams SFOC 2 ...
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Page 65: ...MAN B W MAN Diesel Turbocharger Selection Exhaust Gas By pass 3 ...
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Page 73: ...MAN B W MAN Diesel Electricity Production 4 ...
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Page 95: ...MAN B W MAN Diesel Installation Aspects 5 ...
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Page 147: ...MAN B W MAN Diesel List of Capacities Pumps Coolers Exhaust Gas 6 ...
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Page 171: ...MAN B W MAN Diesel Fuel 7 ...
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Page 187: ...MAN B W MAN Diesel Lubricating Oil 8 ...
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Page 203: ...MAN B W MAN Diesel Cylinder Lubrication 9 ...
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Page 213: ...MAN B W MAN Diesel Piston Rod Stuffing Box Drain Oil 10 ...
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Page 217: ...MAN B W MAN Diesel Central Cooling Water System 11 ...
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Page 223: ...MAN B W MAN Diesel Seawater Cooling System 12 ...
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Page 235: ...MAN B W MAN Diesel Starting and Control Air 13 ...
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Page 243: ...MAN B W MAN Diesel Scavenge Air 14 ...
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Page 257: ...MAN B W MAN Diesel Exhaust Gas 15 ...
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Page 273: ...MAN B W MAN Diesel Engine Control System 16 ...
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Page 289: ...MAN B W MAN Diesel Vibration Aspects 17 ...
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Page 305: ...MAN B W MAN Diesel Monitoring Systems and Instrumentation 18 ...
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Page 329: ...MAN B W MAN Diesel Dispatch Pattern Testing Spares and Tools 19 ...
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Page 361: ...MAN B W MAN Diesel Project Suppport and Documentation 20 ...
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Page 371: ...MAN B W MAN Diesel Appendix A ...
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