This section is available on request - MAN Diesel & Turbo
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<strong>MAN</strong> B&W 8.01<br />
Lubricating and Cooling Oil System<br />
The lubricating oil <str<strong>on</strong>g>is</str<strong>on</strong>g> pumped from a bottom tank<br />
by means of the main lubricating oil pump to the<br />
lubricating oil cooler, a thermostatic valve and,<br />
through a full�flow filter, to the engine inlet RU, Fig.<br />
8.01.01.<br />
RU lubricates main bearings, thrust bearing, axial<br />
vibrati<strong>on</strong> damper, p<str<strong>on</strong>g>is</str<strong>on</strong>g>t<strong>on</strong> cooling, crosshead bearings,<br />
crankpin bearings. It also supplies oil to the<br />
Hydraulic Power Supply unit and to moment compensator<br />
and torsi<strong>on</strong>al vibrati<strong>on</strong> damper.<br />
From the engine, the oil collects in the oil pan,<br />
from where it <str<strong>on</strong>g>is</str<strong>on</strong>g> drained off to the bottom tank,<br />
see Fig. 8.06.01a and b ‘Lubricating oil tank, with<br />
cofferdam’. By class demand, a cofferdam must<br />
be placed underneath the lubricating oil tank.<br />
The engine crankcase <str<strong>on</strong>g>is</str<strong>on</strong>g> vented through ‘AR’ by a<br />
pipe which extends directly to the deck. <str<strong>on</strong>g>Th<str<strong>on</strong>g>is</str<strong>on</strong>g></str<strong>on</strong>g> pipe<br />
Thermostatic valve<br />
TI TI TI<br />
Lube. oil<br />
cooler<br />
For initial fillling of pumps<br />
Pos. 006: 25 mm valve<br />
for cleaning process<br />
Lube oil pumps<br />
Feeler, 45 °C<br />
Deaerati<strong>on</strong><br />
Engine<br />
oil<br />
Fig. 8.01.01 Lubricating and cooling oil system<br />
From purifier<br />
PI PI<br />
Full-flow filter<br />
Page 1 of 1<br />
has a drain arrangement so that oil c<strong>on</strong>densed in<br />
the pipe can be led to a drain tank, see details in<br />
Fig. 8.07.01.<br />
Drains from the engine bedplate ‘AE’ are fitted <strong>on</strong><br />
both sides, see Fig. 8.07.02 ‘Bedplate drain pipes’.<br />
For external pipe c<strong>on</strong>necti<strong>on</strong>s, we prescribe a<br />
maximum oil velocity of 1.8 m/s.<br />
Lubricati<strong>on</strong> of turbochargers<br />
<strong>Turbo</strong>chargers with slide bearings are normally<br />
lubricated from the main engine system. AB <str<strong>on</strong>g>is</str<strong>on</strong>g><br />
outlet from the turbocharger, see Figs. 8.03.01 to<br />
8.03.04, which are shown with sensors for UMS.<br />
Figs. 8.03.01 to 8.03.04 show the lube oil pipe arrangements<br />
for different turbocharger makes.<br />
<strong>MAN</strong> B&W ME/ME�C/ME�GI engines 198 42 30�4.3<br />
<strong>MAN</strong> <strong>Diesel</strong><br />
Deck<br />
Pos. 005: throttle valve<br />
RU<br />
To purifier<br />
RW<br />
AR<br />
To drain tank<br />
E<br />
S S<br />
Min. 15°<br />
AB<br />
Lube oil bottom tank<br />
with cofferdam<br />
Servo oil back-flushing<br />
see Secti<strong>on</strong> 8.08<br />
The letters refer to l<str<strong>on</strong>g>is</str<strong>on</strong>g>t of ‘Counterflanges’<br />
* Venting for <strong>MAN</strong> <strong>Diesel</strong> or Mitsub<str<strong>on</strong>g>is</str<strong>on</strong>g>hi turbochargers <strong>on</strong>ly<br />
*<br />
198 99 84�4.5
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