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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 51 for “"Fuel properties"”.
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Predictive model and near infrared spectroscopy in predicting the diesel fuel properties
Monitoring the diesel fuel properties play an important role in the performance of vehicle engines. Near-infrared (NIR) technology has been investigated as an alternative to monitor the diesel fuel properties. NIR spectroscopy shows an enormous potential for quantitative analysis of complex samples …
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The influence of fuel properties on threshold combustion in aviation gas turbine engines
… investigated the influence of alternative jet fuel properties on aviation gas turbine performance at threshold combustor operating conditions. It focused on altitude blowout performance and was in part motivated by results that were encountered during an aviation industry evaluation of …
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Computational Modeling of Nitrogen Oxide Emissions From Biodiesel Combustion Based on Accurate Fuel Properties
Computational modeling was applied to evaluate strategies for reducing NOx emissions from biodiesel combustion. The results indicated that increasing spray cone angle, retarding start of injection, applying exhaust gas recirculation (EGR) and charge air cooling were all effective in reducing NOx …
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Effect of ambient conditions and fuel properties on homogeneous charge compression ignition engine operation
… examines the impact of ambient conditions and fuel changes on HCCI engine operation, and evaluates cam phasing as a mechanism to compensate for these changes. Experiments were carried out on a modified 2.3 L 14 production engine, and HCCI operation was achieved by the use of residual trapping …
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Effect of fuel properties on the first cycle fuel delivery in a Port Fuel Injected Spark Ignition Engine
… of cranking during the cold start of a Port Fuel Injected (PFI) Spark Ignition (SI) engine. Cold intake port wall and valve temperatures, near-atmospheric manifold pressure, and low port air velocity combine to create an adverse environment for fuel delivery - the process of injecting and …
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A fundamental study of relationships among fuel properties, combustion characteristics and emission with normal and synthetic diesel fuel
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
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An investigation into the effects of diesel fuel properties on the injection characteristics of a common rail injection system
… set out to investigate the effects of diesel fuel properties on the behaviour of a common rail fuel injection system, with particular emphasis on the injection rate shape characteristics. The investigation included the design and commissioning of experimental equipment for the measurement of …
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Fuel composition and quality sensing for diesel engines
ABSTRACT The range of fuels that a diesel engine may be expected to burn is increasing including the use of biodiesels and alcohols produced from various plant or animal sources. Moreover, fuels can become unsuitable for application in diesel engines due to a variety of contamination, degradation, …
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Aspen Plus® simulation and techno-economic analysis of condensation and fractional distillation of plastic waste pyrolysis oil for sustainable aviation fuel production
… feasibility of generating sustainable aviation fuel (SAF) via the pyrolysis of plastic waste, including the subsequent fractionation of plastic derived oil (PDO), was investigated. The fractional distillation of a selection of PDOs was simulated in Aspen Plus® V14.0, based on reported chemical …
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Effect Of Cetane Number And Volatility On Autoignition And Combustion Of Alternative Fuels And Their Surrogates
… security enhances the interests in alternative fuels. </p> <p>Unlike conventional diesel fuel, alternative fuels have wide range of properties, such as volatility, cetane number, density, viscosity and lower heating value, which influence the behavior of fuel and formation of products. …
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Issues on Clean Diesel Combustion Technology Using Supercritical Fluids: Thermophysical Properties and Thermal Stability of Diesel Fuel
… supercritical fluids is aimed to both improve fuel economy and reduce harmful emissions. This novel process involves preparation, injection and combustion of supercritical fuel/diluents mixtures. Design and development of this new process require a deep understanding of fuel properties. The …
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Selection of Prediction Methods for Thermophysical Properties for Process Modeling and Product Design of Biodiesel Manufacturing
… to know the four fundamental thermophysical properties of the feed oil: liquid density (Ï L), vapor pressure (Pvap), liquid heat capacity (CpL), and heat of vaporization (Î Hvap). Additionally, to characterize the fuel qualities, it is critical to develop quantitative correlations to predict …
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Investigation of combustion image analysis by the two-colour method as a technique for comparing diesal fuels
… method as a technique for comparing diesel fuels. The purpose is to master the technique of combustion imaging in both an engine and a Combustion Bomb, with a view to determine the suitability of the two-colour method for fuel comparisons. To evaluate the abilities of the method, an …
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Impact of alternative jet fuels on gas turbine combustion systems
… of conventional, petroleum-derived jet fuels with alternative jet fuels plays an important role in climate change mitigation, economic security, and energy independence. To ensure that alternative jet fuels can replace conventional jet fuels without engine modification, new fuels must be …
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Investigation of Agricultural Residues Gasification for Electricity Production in Sudan as an Example for Biomass Energy Utlization under Arid Climate Conditions in Developing Countries
… suggested as suitable systems. In chapter 4, fuel properties and fuel properties of agricultural residues were studied, different samples were tested and the results were presented. The main conclusions derived were: fuel properties of agricultural residues are modifiable properties, so …
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Fuel characterization using remote sensing in support of large-scale wildfire management in the Cerrado biome
… changes in the fire regime. Managing fuels is one of the most important options we have for reducing wildfire’s negative impacts on society and the environment and amplifying positive ones on fire-dependent flora. Large areas such as Cerrado often require remote sensors to characterize …
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Development of a database for alternative jet fuels
… and benefits of a database for alternative jet fuels. Data on alternative jet fuels, conventional jet fuels and blends of alternative and conventional jet fuels were collected from the Air Force Research Lab, Metron Aviation and Petroleum Quality Information System. This data was converted to a …
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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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Formation and Characterization of Vegetable Oil Microemulsions and Their Application in Oilseed Extraction and Biofuel
… and cosmetic delivery, enhanced oil recovery, biofuels, etc. Microemulsion formation of vegetable oils at ambient conditions (temperature and pressure) and without the addition of co-oil and/or alcohols is challenging at best. Undesirable phases, such as macroemulsions, liquid crystals and sponge …
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