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Duel fuel engine seminar ppt

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Duel fuel engine seminar ppt

  1. 1. CONTENTS • INTRODUCTION • WHAT IS DUEL FUEL ENGINE • DUEL FUEL ENGINECONVERSION • MAJOR MODIFIED ENGINE PARTS • PERFORMACE OF DUEL FUEL ENGINE • REDUCTIONS • FEATURES OF DUEL FUEL ENGINE • KNOCK CONTROL IN DUEL ENGINE • ADVANTAGES • DISADVANTAGES • CONCLUSION • REFERENCE
  2. 2. INTERDUCTION • In our country diesel is primarily used for transportation, agriculture and electrical power generation. Diesel is becoming scare and costlier and hence there is a need to preserve diesel for only locomotive and agriculture uses. For power generation, alternate fuels should be used wherever possible so that diesel is conserved and made available for it primary uses.This will also save sizable for an exchange, as we import considerable amount of crude oil to meet our needs of diesel and petroleum products.
  3. 3. What is Duel Fuel Engine • Internal combustion engines operating on gaseous fuel have for long been known. Many large stationary engines use two fuels. Normally of these two fuels, one is gaseous and other is a liquid fuels.The two fuels can be taken widely varying proportion to run engine; such as engine is usually called Duel fuel engine
  4. 4. Engine Cycle
  5. 5. Duel Fuel Engine Conversion
  6. 6. What we do ? • Converting diesel engine power plants to duel fueled engine power plant Present Main Fuel…..[Diesel oil] “Diesel” Engine After conversion Main Fuel…..[Natural Gas] “Dual Fuel” Engine Pilot Fuel…..[Diesel oil]
  7. 7. Major Modified Engine Parts and Auxiliaries For conversion Engine parts • additional parts - Gas admission system, knock detector - Air/Fuel ratio control system - Oil mist ventilation system • Specification change parts - Piston ring, Piston pin metal - Fuel injector, Plunger assembly, Fuel governor • Modification parts - Cylinder head, Piston, Liner, Charge air duct, T/C matching
  8. 8. • PLANT AUXILIARIES - Gas supplying system - Safety device for gas system - Engine control panel - Remote monitoring system • FACTORS AFFECTING COMBUSTION IN A DUEL FUEL ENGINE 1 Pilot fuel quantity2. InjectionTiming.3. Catani Number of Pilot Fuel.4. InletTemperature.5. Gaseous Fuels.6. Effect ofThrottling.7. MixtureStrength
  9. 9. PERFORMACE OF DUEL FUEL ENGINE • Dual-fuel engines are capable of producing as much power when running with a gaseous fuel as a primary fuel as when operating on liquid fuels only The efficiency of the dual-fuel engine at part load is poor because of increased delay periods at low mixture strength.This can be increased by increasing the excess air or injecting more pilot fuel at part loads
  10. 10. Reductions • Operation cost Approx.30% less • Reduction in Operation Cost will fluctuate because of the operation conditions of engines and the price level of fuel oil and natural gas in a project site. • CO2 Emission 30% less • Sox Emission 95% less • NOx Emission 20% less (comparing with diesel oil firing)
  11. 11. Features of duel fuel engine Less operation cost • Main fuel: Natural Gas Environmental friendly • drastic reduction of NOx,SOx & CO2 Emission Stable operation • Pilot injection system • Operatable on either fuel of natural gas or diesel oil Excellent dependability • Main component : Diesel engine
  12. 12. Knock control in duel engine • Excess supply of air • Use of cold combustion air • Increased cooling of piston • Use of additives • Reducing the pressure of the gaseous fuel
  13. 13. Advantages of duel fuel Engine • Only a small amount of liquid fuel needed to run engine. • Suitable for total energy installation (sewage gas) • Clean combustion results in reduced wear of engine parts and reduced consumption of lubricating oil. • Can be used to produce synthetic gas, which is a mixture of CO and H2 • Gas burns without leaving any residue (no pollution)
  14. 14. Disadvantages • Tendency of vapor lock while using lighter fuels. • Tendency of increased wear due to lower lubricity of gasoline. • Requirement for injecting different volumes of fuel depending on their heating values and compressibility.
  15. 15. CONCLUSION • Without much more modification of Cl engine Biogas can be used as a primary fuel. • Quality of fuel is important factor for performance of the engine. • Duel fuel engine generally used for power generation with long term period. • 80 to90% of diesel can replace by biogas. • Increasing the compression ratio improved the performance and cylinder pressure of the engine.
  16. 16. REFERENCE • https://en.wikipedia.org/wiki/Bi-fuel_vehicle • http://papers.sae.org/940548/ • old.shortsea.fr/WartsilaGasEngines.ht ml
  17. 17. THANK YOU

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