瓦锡兰对气体燃料的研究
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Sailing on LNG
Why LNG Powered Vessel? / LNG
ECA LNG
LNG
Environment Protection /
CO2 & HC EEDI
PM
When running on LNG (CH4)
Clean combustion process /
Much less particles in the exhaust gas /
Higher H content of CH4, lower CO2 produced. / CO 2 Higher air / fuel ratio, less NOx formation / NO x
Comparison between Gas mode and Diesel mode /
NO x about 60% lower, meet the IMO tier-III requirement / NO x 60% IMO CO about 75% lower / CO 75% CO 2about 20% lower / CO 2 20% Practically no SO x emission / SO x
Less solid particles in exhaust gas /
Engine Emission Comparison /
C
H
H
H H
SOx Emission limits / SOx
4,54,53,53,53,51,51,01,00,50,167%
78%
71%
86%
97%
0,1%
4,5%3,5%
1,5%1,0%0,5%2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
SOx
97%
78%
Spark Ignited Pure gas engine
Gas injected during intake stroke Gas & Air Compressed in compress stroke Electric spark ignition of gas
mixture
High Pressure Dual Fuel engine
Air in during intake
stroke
Only air compressed during compress stroke
Pilot oil and Gas injection
Select the right technology /
****
**
***** GAS INJECTION DUAL-FUEL (DF)
IMO NOx Tier III
****
**
*****
***** GAS INJECTION
(SG)
IMO NOx Tier III
**
GAS INJECTION
GAS-DIESEL (GD)
IMO NOx Tier III
Otto/Diesel cycles: effects on NO X / NO X
NOx
Otto ,
Diesel ,
W ärtsil äGas Engine History /
GD = Gas Diesel engine /
SG = Spark ignited Gas engine / DF = Dual Fuel engine /
1987
1989
1991
1993
1995
1997
1999
2001
2003
2005
2007
2009
2011
Wärtsilä Vasa 32
WärtsiläVasa32 WärtsiläVasa 32DF
W32 Wärtsilä 34DF
W50SG
WärtsiläVasa WärtsiläVasa 32GD
Wärtsilä46 Wärtsilä46GD
Wärtsilä25SG
WärtsiläVasa 32 WärtsiläVasa 34SG
Wärtsilä28SG
Wärtsilä46 Wärtsilä50DF
Wärtsilä32 Wärtsilä34SG
W20DF 2012
Dual-Fuel application/References /
Latest data: More than 720 engines, total operation hours exceeding 5 Million 2012-06 720 DF
Comm. Ships
LNGC
108 (61) LNG 429 (251) DF 1,900,000 2xW462xW46-->2xW50DF 1 2 1x 15000m3 LNG 1x 8L50DF + CPP 3x6L20DF
Power Plant
DF 51 186
2,600,000 1997 20112011--06
Fortescue Metals Group Ltd., 6x20V34DF
Offshore
PSVs/ FPSOs 20 93 1994
New orders!
•Harvey Gulf: the first 4 LNG-PSV to be
operated in the Gulf of Mexico!
Ferry Cruise
1+1 2800 4 / 2013