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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 10 of 24 (0.012 seconds)| 1 |
Laser induced fluorescence for the measurement of air-to-fuel ratios in gasoline direct injection enginesDe Sercey, Guillaume January 2004 (has links)
In view of current and future legislation, gasoline direct injection engines have been developed as a means of lowering fuel consumption and pollutant emission. These objectives are achieved through the use of a `lean-burn' technique, where the fuel concentration inside the cylinder is significantly lower than stoichiometric. This low fuel concentration is compensated by a stratification process where the fuel is concentrated around the spark plug, so that ignition is still possible. In order to advance the development of gasoline direct injection engines, it is important to understand the fuel distribution process itself. Standard fuel concentration measurement techniques such as exhaust valve sampling or catalytic hot wire probes can only provide time- and space-averaged data. On the other hand optical laser techniques can provide the same information with a much greater spatial and temporal resolution. Among these techniques Laser-induced fluorescence (LIF) allows the measurement of 2-dimensional molecules distribution and is traditionally used to measure in cylinder fuel concentration qualitatively. The LIF signal is directly proportional to the concentration of the fluorescing tracer. However it is also dependent on pressure, temperature and surrounding species, parameters which are difficult to quantify in an engine. Consequently most LIF measurement can only be performed qualitatively. Performing quantitative measurements is however a much tougher challenge. The main objective of this thesis is to present the development of a new technique for the calibration of LIF measurement of fuel concentration in the cylinder of a direct injection engine and to apply this method for gaining an understanding of the air and fuel mixing process.
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Development of a liquid-phase LPG MPI conversion systemVuorenkoski, Anni Kaisa January 2004 (has links)
No description available.
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A study of fuel spray structure and its relationship to emissions and performance of a gasoline direct injection engineO'Donoghue, Shane Thomas January 2002 (has links)
No description available.
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An investigation of flow processes in a dual-intake motored engine in relation to gasoline direct injection engine operationSt. Hill, Nicholas January 2002 (has links)
No description available.
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Effect of skin fracture on failure of a bilayer polymer plateGodart, Marie-Aude January 2007 (has links)
No description available.
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Performance of charge injection electrostatic atomizer and spray characteristicsRigit, Andrew Ragai Henry January 2004 (has links)
No description available.
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The influence of valve timing and other features on the combustion and emissions characteristics of a DISI engineOrmond, Adam January 2007 (has links)
No description available.
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Temporal characterisation of various G-DI fuel injector conceptsMorris, David Wyn January 2003 (has links)
No description available.
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Processes affecting the state and behaviour of fuel in the intake port of a spark ignition engineBurton, John January 2004 (has links)
No description available.
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The analysis of heat release in the investigation of split-main fuel injection in a diesel enginePugh, Gareth Joseph January 2005 (has links)
No description available.
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