This section is available on request - MAN Diesel & Turbo
This section is available on request - MAN Diesel & Turbo
This section is available on request - MAN Diesel & Turbo
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<strong>MAN</strong> B&W 4.01<br />
PTO/RCF<br />
Side mounted generator, BWIII/RCF<br />
(Fig. .01.01, Alternative 3)<br />
The PTO/RCF generator systems have been developed<br />
in close cooperati<strong>on</strong> with the German<br />
gear manufacturer RENK. A complete package<br />
soluti<strong>on</strong> <str<strong>on</strong>g>is</str<strong>on</strong>g> offered, compr<str<strong>on</strong>g>is</str<strong>on</strong>g>ing a flexible coupling,<br />
a step�up gear, an epicyclic, variable�ratio gear<br />
with built�in clutch, hydraulic pump and motor,<br />
and a standard generator, see Fig. .01.03.<br />
For marine engines with c<strong>on</strong>trollable pitch propellers<br />
running at c<strong>on</strong>stant engine speed, the<br />
hydraulic system can be d<str<strong>on</strong>g>is</str<strong>on</strong>g>pensed with, i.e. a<br />
PTO/GCR design <str<strong>on</strong>g>is</str<strong>on</strong>g> normally used.<br />
Fig. .01.03 shows the principles of the PTO/RCF<br />
arrangement. As can be seen, a step�up gear box<br />
(called crankshaft gear) with three gear wheels<br />
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<strong>MAN</strong> B&W K108ME-C6, K98MC/MC-C/ME/ME-C6/7,<br />
S90MC-C/ME-C7/8, K90ME/ME-C9, K90MC-C/ME-C6, S80MC6,<br />
S80MC-C7/8, S80ME-C7/8/9, K80ME-C9, K80MC-C/ME-C6,<br />
S70MC�C/ME-C/ME-GI7/8, L70MC�C/ME-C7/8, S70MC6,<br />
S65ME-C/ME-GI8, S60MC6, S60MC-C/ME-C/ME-GI7/8,<br />
L60MC-C/ME-C7/8, S50MC-C/ME-C7/8, S50MC6, S50ME-B8/9<br />
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<strong>MAN</strong> <strong>Diesel</strong><br />
Page of 6<br />
<str<strong>on</strong>g>is</str<strong>on</strong>g> bolted directly to the frame box of the main<br />
engine. The bearings of the three gear wheels<br />
are mounted in the gear box so that the weight of<br />
the wheels <str<strong>on</strong>g>is</str<strong>on</strong>g> not carried by the crankshaft. In the<br />
frame box, between the crankcase and the gear<br />
drive, space <str<strong>on</strong>g>is</str<strong>on</strong>g> <str<strong>on</strong>g>available</str<strong>on</strong>g> for tuning wheel, counterweights,<br />
axial vibrati<strong>on</strong> damper, etc.<br />
The first gear wheel <str<strong>on</strong>g>is</str<strong>on</strong>g> c<strong>on</strong>nected to the crankshaft<br />
via a special flexible coupling made in <strong>on</strong>e<br />
piece with a tooth coupling driving the crankshaft<br />
gear, thus <str<strong>on</strong>g>is</str<strong>on</strong>g>olating it against torsi<strong>on</strong>al and axial<br />
vibrati<strong>on</strong>s.<br />
By means of a simple arrangement, the shaft in<br />
the crankshaft gear carrying the first gear wheel<br />
and the female part of the toothed coupling can<br />
be moved forward, thus d<str<strong>on</strong>g>is</str<strong>on</strong>g>c<strong>on</strong>necting the two<br />
parts of the toothed coupling.<br />
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Fig. 4.01.03: Power take off with RENK c<strong>on</strong>stant frequency gear: BW III/RCF, opti<strong>on</strong>: 4 85 253<br />
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178 23 22�2.1<br />
198 43 00�0.2
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