TECHNOLOGY REVIEW - Camelot Technologies Group

Wärtsilä 20V32 engine.
EFFICIENT LOW-EMISSION COMBUSTION
Hydrocarbons can be burned under a
wide range of conditions. Today, also
CO 2 emissions are much in focus due
to the climate change issues and hence
it is essential to try to optimize the fuel
oil consumption concurrently with other
emission reduction targets.
Wärtsilä has developed the Low
NO X combustion concept since 1994
and raised the fuel efficiency of the
diesel engines substantially without a
simultaneous NO X -emission increase.
The Low NO X combustion concept has
been enhanced on the Wärtsilä 32
engine type to meet not the only the
current IMO limits and World Bank Guidelines,
but even lower NOx emission limits such
as the predicted next IMO limit and special
requirements for countries such as India. The
32-engine can be optimized for minimum fuel
consumption or for lower NO X -emissions such
as 710 ppm-v (15 % O 2 ) with an associated
fuel penalty.
DEVELOPMENT OF ENGINE PERFORMANCE
0
1200
-2
World Bank / IMO limit
1000
The main qualities of the Wärtsilä 32 are:
-4
New Asian limit
800
•
•
•
•
•
Low-NO X combustion
Reliability and low maintenance costs
Integrated monitoring and control or
basic automation system
Ergonomic interface
Minimized consumables.
SFOC (g/kWh)
-6
-8
-10
-12
Wärtsilä Vasa 32 Wärtsilä 32 Wärtsilä 32
economy optimized
NOX
SFOC
Wärtsilä 32
emission optimized
600
400
200
0
NOX
Performance values for LFO
5