Diesel Efficiency Ryan Macaluso & Wayne LaDow Department of Chemical Engineering The University of Texas at Austin Fall 2006.

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Presentation transcript:

Diesel Efficiency Ryan Macaluso & Wayne LaDow Department of Chemical Engineering The University of Texas at Austin Fall 2006

Outline Diesel Fuel Engine Mechanics Engine Thermodynamics Modern Diesel Engines Future Advancements

Fuels GasolineDiesel

Spark Ignition

Compression Ignition

Engine Thermodynamics Otto Cycle –Thermodynamic cycle most widely used in modern spark-ignited combustion engines Diesel Cycle –Thermodynamic cycle used in diesel engines accounting for the different properties of diesel fuel. –Thermodynamic cyclesThermodynamic cycles

Fears

Modern Diesel Engines Piezo-electric Injectors –Allows for finer control of injection timing and amount of diesel injected

Modern Diesel Engines Common Rail Fuel Systems –Common source of evenly-mixed, high pressure fuel delivered to each injector in a finer spray than original fuel pumps

Future Advancements Atkinson Cycle –Sacrifices power for efficiency –Used presently in several hybrid vehicles