MAN B&W 4.03
Page 4 of 6
MAN Diesel
198 43 156.2MAN 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
DMG/CFE Generators
Option: 4 85 259
Fig. 4.01.01 alternative 5, shows the DMG/CFE
(Direct Mounted Generator/Constant Frequency
Electrical) which is a low speed generator with
its rotor mounted directly on the crankshaft and
its stator bolted on to the frame box as shown in
Figs. 4.03.04 and 4.03.05.
The DMG/CFE is separated from the crankcase
by a plate and a labyrinth stuffing box.
The DMG/CFE system has been developed in co-
operation with the German generator manufactur-
ers Siemens and AEG, but similar types of gene-
rator can be supplied by others, e.g. Fuji, Taiyo
and Nishishiba in Japan.
For generators in the normal output range, the
mass of the rotor can normally be carried by the
foremost main bearing without exceeding the per-
missible bearing load (see Fig. 4.03.05), but this
must be checked by the engine manufacturer in
each case.
If the permissible load on the foremost main bear-
ing is exceeded, e.g. because a tuning wheel
is needed, this does not preclude the use of a
DMG/CFE.
Fig. 4.03.04: Standard engine, with direct mounted generator (DMG/CFE)
178 06 733.1
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