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1.4.3
Exhaust system
Water is injected in the exhaust system of the generating
set. In this way the cooling water that has passed the heat
exchanger is mixed with the exhaust gases. Temperature
and
volume
of
the
gases
considerably, so that a rubber exhaust hose can be used
and the level of noise is reduced as well.
1
STANDARD EXHAUST SYSTEM INSTALLATION
The
generating
set
exhaust
completely independent and separate from the exhaust
system of any other engine on board. A water lock
prevents the generating set from being flooded by cooling
water and should be installed as close to the generating
set as possible. The lock must be large enough to hold the
entire water volume held in the hose from the top of the
goose neck to the water lock. The water lock must be
installed at the lowest point of the exhaust system (ref. to
figure 9, ref. 1). The exhaust hose must have an inner
diameter of 40 mm no less, no more-. The exhaust system
must be installed so that the back pressure inside the
exhaust does not exceed 0,8 psi 60 cm. water pressure
(refer to paragraph 5.4.3 of the users manual) and total
length up to the outlet or water separator does not exceed
2,5 m. The exhaust hose descends from the capsule to the
water lock. Then the hose rises maximum lift 120 cm via
the "goose neck" to the through-hull exhaust outlet,
situated minimum 50 mm above the water line (refer to
figure 9, ref. 5). The "goose neck" must be vertical and
Figure 9: Standard exhaust system
1 Exhaust water lock;
2 Exhaust outlet muffler;
3 Exhaust line Ø 40 mm;
Figure 9: Standard exhaust system
EN / M-SC3.5 / September 2010
are
thereby
reduced
system
must
remain
Max. length A – B = 2.5 m. (8 ft.)
4 Goose neck;
5 Through-hull exhaust outlet Ø 40 mm;
6 Water level.
situated preferable along the ship's keel center line. It is
recommended to install an extra muffler (see figure 9, ref.
2) close to the through-hull fitting.
Because of the small gas flow of the small
engine it is very important to keep strictly to
the instructions above. Some mufflers and
water locks cause too high back pressure.
You are advised to use a Whisper Power
installation kit or check the back pressure
(refer to
paragraph 5.4.3
manual). Too high back pressure causes the
system to fill up with water that affects the
outlet
valve
INSTALLATION
of the users
and
valve
seat.
9
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