11.3.7.4
Conventional exhaust gas silencer (5R02)
Yard/designer should take into account that unfavourable layout of the exhaust system (length
of straight parts in the exhaust system) might cause amplification of the exhaust noise between
engine outlet and the silencer. Hence the attenuation of the silencer does not give any absolute
guarantee for the noise level after the silencer.
When included in the scope of supply, the standard silencer is of the absorption type, equipped
with a spark arrester. It is also provided with a soot collector and a condense drain, but it
comes without mounting brackets and insulation. The silencer can be mounted either
horizontally or vertically.
The noise attenuation of the standard silencer is either 25 or 35 dB(A). This attenuation is valid
up to a flow velocity of max. 40 m/s.
Fig 11-8
Exhaust gas silencer
Table 11-1
Typical dimensions of exhaust gas silencers
Attenuation: 35 dB(A)
Attenuation: 25 dB(A)
ØD
[mm]
C [mm]
B [mm]
A [mm]
NS
Weight [kg]
L [mm]
Weight [kg]
L [mm]
2900
6870
2295
5360
1800
2240
1190
860
900
3730
7620
2900
5880
1900
2340
1280
870
1000
4780
8200
3590
6200
2100
2600
1340
900
1100
6540
9500
4980
7500
2300
2650
1440
950
1300
7120
10165
5800
8165
2400
2680
1490
950
1400
7650
10165
6180
8165
2500
2680
1540
1000
1500
Flanges: DIN 2501
11-10
Wärtsilä 46F Product Guide - a19 - 1 December 2017
Wärtsilä 46F Product Guide
11. Exhaust Gas System
Содержание 12V46F
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