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MAN B&W 14.02
Auxiliary Blowers
The engine <strong>is</strong> provided with two electrically driven
auxiliary blowers. Between the scavenge air cooler
and the scavenge air receiver, non�return valves
are fitted which close automatically when the auxiliary
blowers start supplying the scavenge air.
The auxiliary blowers start operating consecutively
before the engine <strong>is</strong> started and will ensure
complete scavenging of the cylinders in the starting
phase, thus providing the best conditions for a
safe start.
During operation of the engine, the auxiliary blowers
will start automatically whenever the engine
load <strong>is</strong> reduced to about 30�40%, and will continue
operating until the load again exceeds approximately
40�50%.
Emergency running
If one of the auxiliary blowers <strong>is</strong> out of function,
the other auxiliary blower will function in the system,
without any manual adjustment of the valves
being necessary.
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Fig. 14.02.01: Scavenge air system
MAN B&W S80ME�C7/8/9, S70ME�C/ME�GI7/8,
L70ME�C7/8, S65ME�C/ME�GI8, S60ME�C/ME�GI7/8,
L60ME�C7/8, S50ME�C7/8
MAN Diesel
Control of the auxiliary blowers
Page of
The auxiliary blowers are fitted onto the main engine.
The control system for the auxiliary blowers
<strong>is</strong> integrated in the Engine Control System.
The starter panels with starters for the auxiliary
blower motors are not included, they can be ordered
as an option: 4 55 653.
The data for the scavenge air cooler <strong>is</strong> specified in
the description of the cooling water system chosen.
For further information, please refer to our publication
titled:
Influence of Ambient Temperature Conditions
The publication <strong>is</strong> <strong>available</strong> at: www.mandiesel.com
under ‘Quicklinks’ → ‘Technical Papers’
178 44 70�5.1
198 40 12�4.6