Wartsila 31, Руководство по эксплуатации продукта

Страница: 110 / 168

ØB [mm] ØA [mm] TC type Engine
900 D450
ABB POWER2
845-M
12V31
900 D450 14V31
1000 D450 16V31
Fig 10-6 Exhaust pipe, diameters and support
(DAAF351275, DAAF351507)
10.3 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 10-7 External exhaust gas
system
10.3.1 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
10-6 Wärtsilä 31 Product Guide - a1 - 18 October 2016
Wärtsilä 31 Product Guide 10. Exhaust Gas System