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Dual Fuel Engine Conversion

Dual Fuel Engine Conversion. JFE Engineering Corporation. 18 May 2010. Engine Cycle. Pilot Injection. Gas Admission. Intake. Compression. Combustion. <Diesel Mode>. Advantages : DF engines can operate at 100% load using only diesel oil in case of need. Intake. Compression. Combustion.

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Dual Fuel Engine Conversion

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  1. Dual Fuel Engine Conversion JFE Engineering Corporation 18 May 2010

  2. Engine Cycle Pilot Injection Gas Admission Intake Compression Combustion <Diesel Mode> Advantages : DF engines can operate at 100% load using only diesel oil in case of need Intake Compression Combustion Fuel gas : 95% Fuel oil : 5% <Dual Fuel Mode>

  3. Features of Dual 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 • Clean combustion and Less maintenance cost • Effective utilization of existing assets

  4. 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)

  5. Dual Fuel Engine Conversion Before Conversion After Conversion Exhaust System Air/Gas Intake System Fuel Injection System Cylinder Head Piston Connecting Rod Typical samples of the Dual Fuel Engine (Carburetor Type)

  6. Major Modified Engine Parts and Auxiliaries for Conversion Engines 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 Plant Auxiliaries - Gas supplying system - Safety device for gas system - Engine control panel - Remote monitoring system

  7. Schematic Diagram for DF System <New Installing Part for Conversion> IDO Tank Shut off Valve Gas Press. Regulating Valve S Gas Pump Air Filter FO Injection Pump Exhaust Gas Air Rev. Pick up Valve Controller Governor Cam Turbocharger DO Injector A Gas Admission Valve Air Cooler Charged Air A To Turbocharger Water Main Controller （Fuel, Gas） Piston

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