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]
2900687022955360180022401190860900
37307620290058801900234012808701000
47808200359062002100260013409001100
65409500498075002300265014409501300
712010165580081652400268014909501400
7650101656180816525002680154010001500
Flanges: DIN 2501
11-10 Wärtsilä 46F Product Guide - a19 - 1 December 2017
Wärtsilä 46F Product Guide11. Exhaust Gas System
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