A Theoretical model showing the effects of the fuel induced gamma effect

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Title: A Theoretical model showing the effects of the fuel induced gamma effect
Author: Bordeleau, Bryan
Abstract: The Fuel Induced Gamma Effect uses pressure data from a single-cylinder directin-jection engine and information about the specific heat ratio, gamma, of the injected fuel to predict the evaporated fuel mass in the piston-cylinder assembly. Thermodynamic theory and ideal gas laws are used to calculate theoretical pressure within the cylinder and this pressure is then compared to the actual pressure measured in the engine. The difference in gamma between the calculated and actual states of the fuel is then used to predict how much fuel has evaporated in the cylinder. This simplistic approach also takes into account information about the residuals in the cylinder, mass loss from the system, and heat losses. Combining these factors with thermodynamic theory results in a very accurate model which can predict the evaporation profile of the injected fuel from the time of injection until ignition.
Record URI: http://hdl.handle.net/1850/14384
Date: 2000-06-01

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