WÄRTSILÄ 46F Series Product Manual page 138

11. Exhaust Gas System
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
Table 11-1
NS
900
1000
1100
1300
1400
1500
Flanges: DIN 2501
11-10
Exhaust gas silencer
Typical dimensions of exhaust gas silencers
A [mm] B [mm] C [mm]
860 1190 2240
870 1280 2340
900 1340 2600
950 1440 2650
950 1490 2680
1000 1540 2680
Attenuation: 25 dB(A)
ØD
[mm]
L [mm] Weight [kg]
1800 5360 2295
1900 5880 2900
2100 6200 3590
2300 7500 4980
2400 8165 5800
2500 8165 6180
Wärtsilä 46F Product Guide - a19 - 1 December 2017
Wärtsilä 46F Product Guide
Attenuation: 35 dB(A)
L [mm] Weight [kg]
6870 2900
7620 3730
8200 4780
9500 6540
10165 7120
10165 7650