MAN B&W
14.02
Page of
MAN Diesel
198 40 124.6
MAN B&W S80MEC7/8/9, S70MEC/MEGI7/8,
L70MEC7/8, S65MEC/MEGI8, S60MEC/MEGI7/8,
L60MEC7/8, S50MEC7/8
2UNNINGæWITHæAUXILIARYæBLOWER
2UNNINGæWITHæTURBOCHARGER
Auxiliary Blowers
The engine is provided with two electrically driven
auxiliary blowers. Between the scavenge air cooler
and the scavenge air receiver, nonreturn valves
are fitted which close automatically when the aux-
iliary blowers start supplying the scavenge air.
The auxiliary blowers start operating consecu-
tively before the engine is started and will ensure
complete scavenging of the cylinders in the start-
ing phase, thus providing the best conditions for a
safe start.
During operation of the engine, the auxiliary blow-
ers will start automatically whenever the engine
load is reduced to about 3040%, and will con-
tinue operating until the load again exceeds ap-
proximately 4050%.
Emergency running
If one of the auxiliary blowers is out of function,
the other auxiliary blower will function in the sys-
tem, without any manual adjustment of the valves
being necessary.
Control of the auxiliary blowers
The auxiliary blowers are fitted onto the main en-
gine. The control system for the auxiliary blowers
is integrated in the Engine Control System.
The starter panels with starters for the auxiliary
blower motors are not included, they can be or-
dered as an option: 4 55 653.
The data for the scavenge air cooler is specified in
the description of the cooling water system chosen.
For further information, please refer to our publi-
cation titled:
Influence of Ambient Temperature Conditions
The publication is available at: www.mandiesel.com
under ‘Quicklinks’
→
‘Technical Papers’
Fig. 14.02.01: Scavenge air system
178 44 705.1
Summary of Contents for B&W S80ME-C7
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Page 15: ...MAN B W MAN Diesel Engine Design 1 ...
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Page 31: ...MAN B W MAN Diesel Engine Layout and Load Diagrams SFOC 2 ...
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Page 63: ...MAN B W MAN Diesel Turbocharger Choice Exhaust Gas By pass 3 ...
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Page 71: ...MAN B W MAN Diesel Electricity Production 4 ...
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Page 86: ...MAN B W Page of 1 MAN Diesel This section is not applicable PTO BW GCR 4 04 198 47 58 9 0 ...
Page 109: ...MAN B W MAN Diesel Installation Aspects 5 ...
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Page 143: ...MAN B W MAN Diesel List of Capacities Pumps Coolers Exhaust Gas 6 ...
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Page 163: ...MAN B W MAN Diesel Fuel 7 ...
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Page 179: ...MAN B W MAN Diesel Lubricating Oil 8 ...
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Page 199: ...MAN B W MAN Diesel Cylinder Lubrication 9 ...
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Page 209: ...MAN B W MAN Diesel Piston Rod Stuffing Box Drain Oil 10 ...
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Page 213: ...MAN B W MAN Diesel Central Cooling Water System 11 ...
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Page 219: ...MAN B W MAN Diesel Seawater Cooling System 12 ...
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Page 231: ...MAN B W MAN Diesel Starting and Control Air 13 ...
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Page 239: ...MAN B W MAN Diesel Scavenge Air 14 ...
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Page 249: ...MAN B W MAN Diesel Exhaust Gas 15 ...
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Page 265: ...MAN B W MAN Diesel Engine Control System 16 ...
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Page 275: ...MAN B W MAN Diesel Vibration Aspects 17 ...
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Page 289: ...MAN B W MAN Diesel Monitoring Systems and Instrumentation 18 ...
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Page 313: ...MAN B W MAN Diesel Dispatch Pattern Testing Spares and Tools 19 ...
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Page 339: ...MAN B W MAN Diesel Project Suppport and Documentation 20 ...
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Page 349: ...MAN B W MAN Diesel Appendix A ...
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