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MAN B&W 13.02
Components for Starting Air System
Starting air compressors
The starting air compressors are to be of the
water�cooled, two�stage type with intercooling.
More than two compressors may be installed to
supply the total capacity stated.
Air intake quantity:
Reversible engine,
for 12 starts ....................... see ‘L<strong>is</strong>t of capacities’
Non�reversible engine,
for 6 starts ......................... see ‘L<strong>is</strong>t of capacities’
Delivery pressure ........................................ 30 bar
Starting air receivers
The volume of the two receivers <strong>is</strong>:
Reversible engine,
for 12 starts ..................... see ‘L<strong>is</strong>t of capacities’ *
Non�reversible engine,
for 6 starts ....................... see ‘L<strong>is</strong>t of capacities’ *
Working pressure ........................................ 30 bar
Test pressure .................... according to class rule
* The volume stated <strong>is</strong> at 25 °C and 1,000 mbar
Reduction station for control and safety air
In normal operating, each of the two lines supplies
one engine inlet. During maintenance, three <strong>is</strong>olating
valves in the reduction station allow one of the
two lines to be shut down while the other line supplies
both engine inlets, see Fig. 13.01.01.
Reduction ......................... from 30�10 bar to 7 bar
(Tolerance ±10%)
Flow rate, free air .............. 2,100 Normal liters/min
equal to 0.035 m 3 /s
Filter, fineness ............................................. 40 µm
MAN B&W ME/ME�C/ME�GI,
S60ME-B, S50ME-B
MAN Diesel
Page 1 of 1
Reduction valve for turbocharger cleaning etc
Reduction ..........................from 30�10 bar to 7 bar
(Tolerance ±10%)
Flow rate, free air ............. 2,600 Normal liters/min
equal to 0.043 m 3 /s
The consumption of compressed air for control air,
exhaust valve air springs and safety air as well as
air for turbocharger cleaning and fuel valve testing
<strong>is</strong> covered by the capacities stated for air receivers
and compressors in the l<strong>is</strong>t of capacities.
Starting and control air pipes
The piping delivered with and fitted onto the main
engine <strong>is</strong> shown in the following figures in Section
13.03:
Fig. 13.03.01 Starting air pipes
Fig. 13.03.02 Air spring pipes, exhaust valves
Turning gear
The turning wheel has cylindrical teeth and <strong>is</strong> fitted
to the thrust shaft. The turning wheel <strong>is</strong> driven
by a pinion on the terminal shaft of the turning
gear, which <strong>is</strong> mounted on the bedplate.
Engagement and d<strong>is</strong>engagement of the turning
gear <strong>is</strong> effected by d<strong>is</strong>placing the pinion and terminal
shaft axially. To prevent the main engine
from starting when the turning gear <strong>is</strong> engaged,
the turning gear <strong>is</strong> equipped with a safety arrangement
which interlocks with the starting air system.
The turning gear <strong>is</strong> driven by an electric motor
with a built�in gear and brake. Key specifications
of the electric motor and brake are stated in Section
13.04.
198 60 57�8.1