KTH engines 090212 ppt - KTH Engines Stockholm Feb 12 2009...

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Feb 12, 2009 Thomas Stenhede 1 KTH Engines Stockholm Feb. 12, 2009 Thomas Stenhede Master of Science Senior Application Manager Wärtsilä Power Plants Internet: www.wartsila.com mobile +46/70 591 50 79 E-mail: [email protected]
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Feb 12, 2009 Thomas Stenhede 2 KTH Engines Stockholm Feb. 12, 2009 Internal Combustion Engines (ICE) Engine technology Emissions Applications Feb 12, 2009 KTH, Stockholm
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Feb 12, 2009 Thomas Stenhede 3 KTH Engines Stockholm Feb. 12, 2009 Wärtsilä is a Finnish based public company with 18000 employees and a turn-over of 4.3 billion euro and representatives in 70 countries. Within the Power Divisions the business areas are Ship power Power Plants Services The engine brands are e.g.: Wärtsilä, Vasa, Sulzer, Nohab, Sacm, Stork, GMT
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Feb 12, 2009 Thomas Stenhede 4 KTH Engines Stockholm Feb. 12, 2009 Wärtsilä engine program: Diesel engines Four stroke 1 - 24 MW shaft Two stroke 5 - 80 MW shaft Otto engines Four stroke 4 - 18 MW shaft
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Feb 12, 2009 Thomas Stenhede 5 KTH Engines Stockholm Feb. 12, 2009 Engines are denoted according to bore, stroke or cylinder volume (e.g. Wärtsilä 32) Power output of an IC-engine is related to: Speed (rpm), mean effective pressure (imep/bmep), cylinder volume, number of cylinders: P shaft =k * ϖ * p ind * V * N
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Feb 12, 2009 Thomas Stenhede 6 KTH Engines Stockholm Feb. 12, 2009 Wärtsilä fuel versatility development 1970 1980 1990 2000 2010 Diesel Oil (LFO) Heavy Fuel Oil (HFO) Natural Gas (NG) Crude Oil (CRO) Liquid Biofuels (LBF) Emulsified Fuels (FWE) High Viscosity HFOs Associated Gas
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Feb 12, 2009 Thomas Stenhede 7 KTH Engines Stockholm Feb. 12, 2009 Fuel Conversion technology Pressing Hydrolysis - Fermentation Pyrolysis Pressing - Esterification Gasification Combustion Oil Palm Jatropha seed Willow/poplar Pine/Spruce Waste fats/oils Rape seed Wheat Maize Potato Straw Crude Vegetable Oil Bio Diesel Bio-oil Ethanol Methanol DME Bio Methane Hydrogen Diesel Engines Fuel Cell End Fuel Bio Mass Resources Digestion Municipal waste Crops Wood Residues Power Generation technology Boilers and Steam Turbine 40 - 47 % efficiency 40 % efficiency 20 - 35 % efficiency Otto Engines 30 - 45 % efficiency Biomass derived end fuels
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Feb 12, 2009 Thomas Stenhede 8 KTH Engines Stockholm Feb. 12, 2009 pV - diagram Theoretical working cycles 0 20 40 60 80 100 120 140 160 180 200 0 5 000 10 000 15 000 20 000 25 000 30 000 35 000 40 000 Cylinder volume [cm³] Cylinder pressure [bar Diesel cycle I ndicated M ean E ffective P ressure = 20.2 bar ( B rake M ean E ffective P ressure ˜ 19.4 bar) Constant pressure combustion Cylinder pressure limiting ˜ Theoretical diesel cycle pV - diagram Theoretical working cycles 0 20 40 60 80 100 120 140 160 180 200 0 5 000 10 000 15 000 20 000 25 000 30 000 35 000 40 000 Cylinder volume [cm³] Cylinder pressure [bar Otto cycle I ndicated M ean E ffective P ressure = 20.2 bar ( B rake M ean E ffective P ressure ˜ 19.4 bar) ˜ Constant volume combustion Compression ratio limiting (knock) Theoretical otto cycle Pre-mixed combustion Diesel cycle Otto cycle
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Feb 12, 2009 Thomas Stenhede 9 KTH Engines Stockholm Feb. 12, 2009 ICE cycles EX * * * * EX EX IN IN IN IG N ITIO N
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