Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 109 for “"liquid fuel"”.
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In cylinder liquid fuel visualization during cold start
… (SI) engines have been replaced with port-fuel injection systems, and as a result there has been a significant increase in the levels of hydrocarbon (HC) emissions from SI engines during their cold start period. The presence of liquid fuel in the combustion chamber, during a cold start, is …
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Liquid fuel hydrocarbon emissions mechanisms in spark-ignition engines
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Dimensional effects on atomization patterns in liquid fuel injection systems
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Mechanical Engineering, 1955
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Technoeconomic modelling of coal conversion processes for liquid fuel production
… interest has been shown in the production of liquid fuels from alternative sources. In particular processes utilizing coal as the feedstock have received considerable interest. These processes can be divided into direct and indirect liquefaction and pyrolysis. This thesis describes the …
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Liquid fuel transport into the cylinder in spark ignition engines
Liquid fuel inflow into the cylinder is considered an important source of exhaust hydrocarbon (HC) emissions from automotive spark ignition engines particularly during the start-up and subsequent warm up period. As fuel does not readily vaporize under cold engine conditions, significant quantities …
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Syngas production from heavy liquid fuel reforming in inert porous media
In the effort to introduce fuel cell technology in the field of decentralized and mobile power generators, a hydrocarbon reformer to syngas seems to be the way for the market uptake. In this thesis, a potential technology is developed and investigated, in order to convert commercial liquid fuel …
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Ignition and combustion of liquid fuel droplets : impact on pollutant formation
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1984.
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Investigation of liquid fuel jet injection into a simulated subsonic "dump" combustor
Basic experimental studies of the injection of liquid fuel into a two dimensional flowfield designed to represent a sudden-expansion "dump" combustor were performed under cold-flow conditions. Test conditions were as follows: 0.6 entrance Mach number, 25 PSIA total pressure, and nominally 75°F …
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Reconsideration of Inherent Neutron Sources in Liquid Fuel of Molten Salt Reactors
… alpha-n and gamma-n reactions in molten fluoride fuel salts using current gamma-n and alpha-n cross-sections and codes where possible. Original inherent neutron source was calculated for Molten Salt Reactor Experiment (MSRE) in 1959 using then-determined alpha-n cross-sections and an estimate for …
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A political economy analysis of liquid fuel production incentives in South Africa
… is to analyse the development of South Africa's liquid fuels industry from 1930s to the present and the various ways in which the state has extended subsidies and other measures of support to liquid fuels producers. The nature and extent of government support to the South African liquid fuels …
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Experimental and Numerical Studies on the Soot Formation of Liquid Fuel Relevant Compounds
… studies are performed for the soot formation of liquid fuel relevant compounds. The thesis is composed of four research studies. The first develops an improved data analysis approach for the combined laser extinction and two-angle elastic light scattering diagnostics to relate the various …
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Development and Testing of an Integrated Liquid-Fuel-Injector/Plasma-Igniter for Scramjets
A newly designed liquid fuel (kerosene) aeroramp injector/plasma igniter was tested in cold flow using the Virginia Tech supersonic wind tunnel at Mach 2.4. The liquid fuel (kerosene) injector is flush wall mounted and consists of a 2 hole aeroramp array of impinging jets that are oriented in a …
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An experimental simulation of liquid fuel injection into a heated subsonic gas crossflow
… to studying hot-flow subsonic cross-stream fuel injection problems with a less complex and less costly cold-flow facility was developed and implemented. An actual ramjet combustion chamber fuel injection problem was proposed where ambient temperature fuel was injected into a heated …
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Process Modeling of Next-Generation Liquid Fuel Production - Commercial Hydrocracking Process and Biodiesel Manufacturing
… predict unit performance, product yields, and fuel properties from the corresponding operating conditions.\r\n2. Integrated Process Modeling and Product Design of Biodiesel Manufacturing: This work represents first a comprehensive review of published literature pertaining to developing an …
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Characteristics of Active Combustion Control for Liquid-Fuel Systems with Proportional Primary Fuel Modulation
… experiments performed on an unstable kerosene-fueled turbulent combustor. Using a phase shift controller and primary fuel modulation stability is successfully gained for a wide band of global equivalence ratios allowing the limitations of the control scheme to be characterized. It is shown that …
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Evaluation and Characterization Testing of Liquid Fuel Cell Chemistry for Applications in Unmanned Underwater Vehicles
… associated with this larger volume. While fuel cells have been proposed and implemented for both manned and unmanned undersea vehicles, they often rely on compressed and/or cooled liquid 𝐻₂ and 𝑂₂, with bulky containment structures either within or outside a pressure hull. Massachusetts …
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Design and Validation of a Proportional Throttle Valve System for Liquid-Fuel Active Combustion Control
High-bandwidth fuel modulation is currently one of the most promising methods for active combustion control. To attenuate the large pressure oscillations in the combustion chamber, the fuel is pulsed so that the heat release rate fluctuations damp the pressure oscillations in the combustor. This …
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Effect of in-cylinder liquid fuel films on engine-out unburned hydrocarbon emissions for SI engines
… the hydrocarbon emissions from a modern gasoline-fueled vehicle occur when the engine is first started. One important contributing factor to this is the fact that, during this time, temperatures throughout the engine are low - below the point at which all of the components of the gasoline can …
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