WÄRTSILÄ WARTSILA32, Руководство по эксплуатации продукта, Страница: 163 / 254

ØB [mm] ØA [mm] TC type
Engine
900 DN400 NA 297/307
W 12V32
900 DN600 TPS61
900 DN400 NA298
900 DN400 NA358
600 DN500 NT1-10A
1000 DN400 NA 297/307
W 16V32
1000 DN500 TPL67
1000 DN500 NA358
1000 DN600 NT1-12A
1000 DN500 TPL67
W 18V32
11.3 External exhaust gas system
Each engine should have its own exhaust pipe into open air. Backpressure, thermal expansion
and supporting are some of the decisive design factors.
Flexible bellows must be installed directly on the turbocharger outlet, to compensate for
thermal expansion and prevent damages to the turbocharger due to vibrations.
Diesel engine 1
Exhaust gas bellows 2
Connection for measurement of back pressure 3
Transition piece 4
Drain with water trap, continuously open 5
Bilge 6
SCR 7
Urea injection unit (SCR) 8
CSS silencer element 9
Fig 11-8 External exhaust gas
system
11.3.1 Piping
The piping should be as short and straight as possible. Pipe bends and expansions should
be smooth to minimise the backpressure. The diameter of the exhaust pipe should be increased
directly after the bellows on the turbocharger. Pipe bends should be made with the largest
possible bending radius; the bending radius should not be smaller than 1.5 x D.
Wärtsilä 32 Product Guide - a21 - 7 September 2016 11-7
11. Exhaust Gas System Wärtsilä 32 Product Guide