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 11 of 11 for “"air/fuel mixing"”.
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Air/fuel mixing enhancement and emission reduction through intake port design and various fuel emulsions for diesel combustion
… to yield lower pollutant emissions and higher fuel efficiency. The air/fuel mixture inside the ICE, which has a pivotal impact on the subsequent combustion and emission performance, is a key aspect to achieve those requirements. The work done in this dissertation aims at exploring different …
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Modeling of Multi-Component Fuel Vaporization for Spray Simulations Using Continuous Thermodynamics
… by its potential application for improving air-fuel mixing and understanding the possible drop-bubble breakup mechanism.
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Effects of charge motion control during cold start of SI engines
… on the cold start-up process of a port fuel injected SI engine. Engine experiments were performed to assess the effectiveness of enhanced charge motion on mixture preparation, combustion, and hydrocarbon (HC) emissions. Different charge motions were produced by three different shapes of …
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Simulations And Experiments Of Fuel Injection, Mixing And Combustion In Di Gasoline Engines
… to investigate in detail the interactions of fuel spray and combustion system, such as air-fuel mixing, in-cylinder flow development, surface wetting, and turbulence intensity. The characterizations of the internal nozzle flow of DI injector are first studied using the multidimensional …
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The effect of fuel injection pressure and in cylinder temperature on igniton delay, combustion performance and emission
… was to help an understand of the effects of air fuel mixing process during the ignition delay period and initial heat release in combustion process that strongly affects the exhaust emissions. This study investigated effects of ambient temperature,Ti and injection pressure, Pinj on the heat …
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In-Cylinder Soot Oxidation in an Optically Accessible Automotive Diesel Engine
… soot levels. Of particular interest is how fuel injection conditions as well as jet-swirl and jet-jet interactions impact soot oxidation process. In this regard, various optical/laser-based imaging diagnostics were performed to unveil the development of high-temperature reaction and soot in …
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Combustion Visualization And Particulate Matter Emission Of A Gdi Engine By Using Gasoline And E85
… popularized due to its higher power density, fuel efficiency, and the possibility for advanced engine technologies over conventional port-fuel-injection (PFI) gasoline engines. However, many issues are heavily investigated, such as air-fuel mixing preparation, fuel wall-wetting, higher HC and …
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Modeling of biofuel-diesel multi-component fuel effects on vaporization, micro-explosion and combustion
In the effort to reduce air pollution and fossil fuel dependence in automotive and related sectors, internal combustion engine (ICE) designs are optimized for high efficiency and low pollutant emissions, and alternative biofuels are used in ICE mixing with conventional petroleum based fuels. One …
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Combustion quality and regimes for standard and alternative fuels
… to yield lower pollutant emissions and higher fuel efficiency. Various alternative fuels and combustion strategies and regimes have shown great potential in meeting these goals. The work done in this dissertation aims at exploring different alternative fuels and advanced combustion strategies …
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Understanding the development of a reacting fuel jet inside an automotive-size diesel engine using optical and laser-based diagnostics
The fuel penetration and reacting diesel jet development have been studied in a small-bore optical engine to improve the understanding of a swirl-influenced, wall-interacting diesel flame. The optical access to the engine combustion chamber was made possible via multiple quartz windows positioned …
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Study of Ultra-low Emissions Diesel Combustion Systems by Synergetic Application of 3D-CFD and Single-Cylinder Engine
L'abstract è presente nell'allegato / the abstract is in the attachment