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 28 for “"fuel system"”.
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Application of lean principles to an enterprise value stream : a lean analysis of an automotive fuel system development process
… environments are applied across an automotive fuel system enterprise. This enterprise includes all major activities used in developing and delivering fuel systems to customers from the initiation of the systems concept to final production manufacturing. The value of the enterprise's product …
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An analysis of distributed solar fuel systems
While solar fuel systems offer tremendous potential to address global clean energy needs, most existing analyses have focused on the feasibility of large centralized systems and applications. Not much research exists on the feasibility of distributed solar fuel systems. This thesis is an attempt to …
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Conversion of a Gas Turbine Engine to Operate on Lean-Premixed Hydrogen-Air: Design and Characterization
The continued use of fossil fuels along with a rise in energy demand has led to increasing levels of carbon emissions over the past years. The purpose of this research was to design a lean premixed hydrogen fuel system that could be readily retrofit into an existing gas turbine engine to provide a …
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Experimental and numerical study of the adsorption process in a carbon canister
… to reduce evaporative emissions from the fuel system. Predicting the performance of a canister under different conditions can be useful in improving the canister design for efficient operation. In the present study, experiments were set up with fixed-bed carbon canisters to study the …
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Operations manual for student-team-built hybrid power source to recharge an Unmanned Undersea Vehicle
… designed and built a gasoline-hybrid recharging system for a Remus 600 UUV to extend its operating time from three days to four weeks. To facilitate the understanding, operation, and copying of the unit by the project sponsor, MIT Lincoln Laboratory, a thorough inventory of components was taken …
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Design of an automobile turbocharger gas turbine engine
… shaft. Designs for the combustion chamber, oil system, fuel system, and ignition system were created based on research of similar projects. Many of the necessary parts were also specified.
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Phase Transformations and Microstructural Evolution in the U-10 wt.% Mo Alloy with Various Zr Additions at 900C and 650C
… replace the use of highly enriched uranium (HEU) fuels used in research and test nuclear reactors around the world. The low enriched uranium (LEU) fuels must have fissionable uranium densities comparable to the HEU fuels. After extensive investigation by various researchers around the world, the …
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Design and development of a microwave-enhanced diesel soot oxidation system
… Up to this point, improved engine and fuel system design and control schemes have made the use of diesel particulate aftertreatment systems unnecessary for most applications in the United States, but the continued decreasing trend of emissions regulations may necessitate the use of PM …
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Emissions and operational aspects of methanol as an alternative fuel in a stationary gas turbine
… required modifications to the WVU gas turbine's fuel system and atomizer, to provide higher flow rate of fuel then required with aviation kerosene. The gas turbine was modified and operated on methanol for an extended period, without failure. Exhaust gas emissions were tested for carbon monoxide …
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Physics-Based 3D Multi-Directional Reloading Algorithm for Deep Burn HTR Prismatic Block Systems
… ongoing efforts on advanced closed-fuel cycle options and adapted open cycles have led to investigations of various strategies involving utilization of Transuranic (TRU) nuclides in nuclear reactors. Due to favorable performance characteristics, multiple studies are focused on …
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Technical and economic evaluation of triglyceride gasoline blends as an alternative fuel for diesel engines
Developing viable and sustainable alternative fuels is critical in addressing future energy needs. Existing fossil fuels, being limited in nature, are depleting, contribute to climate change, health effects and their markets are volatile resulting in price fluctuations. Liquid fuels comprise a …
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Closed-Loop Control of HCCI Engine Dynamics
… of HCCI combustion have been determined both by system identification and by physical modeling. Different methods for characterizing and controlling the HCCI combustion are outlined and demonstrated. In cases where the combustion phasing in a six-cylinder heavy-duty engine was controlled, either …
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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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Fuel performance of multi-layered zirconium and silicon carbide based Accident Tolerant Fuel claddings
The Accident Tolerant Fuel (ATF) program is focused on extending the time for fuel failure during postulated severe accidents compared to the standard UO₂-Zr alloy fuel system. This thesis investigates the feasibility of four different cladding concepts, two of which are zirconium-alloy based and …
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Diesel-cng dual fuel combustion characterization using vibro-acoustic analysis and response surface methodology
… from any diesel vehicle to a diesel-CNG dual fuel system requires additional fuel management. The need for an engine monitoring is vital to ensure the dual fuel operation run smoothly without excessive knocking, which may shorten the life of the engine. Knock and air-fuel ratio (AFR) sensors …
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FAULT DIAGNOSIS OF ELECTRONIC FUEL CONTROL (EFC) VALVES VIA DYNAMIC PERFORMANCE TEST METHOD
Electronic Fuel Control (EFC) valve regulates fuel flow to the injector fuel supply line in the Cummins Pressure Time (PT) fuel system. The EFC system controls the fuel flow by means of a variable orifice that is electrically actuated. The supplier of the EFC valves inspects all parts before they …
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Hydrogen powered hybrid wing body freighter systems analysis and conceptual design using the ACS tool
This study explores the Systems Engineering involved in creating an environmentally green system for transporting cargo using aircraft. The study looked at using hydrogen and the resulting infrastructure to allow the system to function. The functionalities and then subsystems were defined for the …
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Analysis of carbonaceous solid deposits from thermal stressing of FAMEs and FAME/diesel blends at different temperatures in a continuous flow reactor
Fuel deposits are carbon-rich high molecular weight species that are formed from the degradation of fuel. Diesel deposits may form on vital parts of a vehicle's engine or fuel system such as the fuel injectors. Once these deposits have formed, they can block the spray holes of the injector and may …
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Hydrocarbon emissions in a homogeneous direct-injection spark engine : gasoline and gasohol
… emissions of loading, engine temperature, fuel type, and injection timing, a series of experiments was performed. The effect of loading was observed by running the engine at a higher temperature and more open throttle than would typically be observed at fast idle or low load driving. The …
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Computational Zoning Assessment of Unconventional Aircraft
… removing sources of spark-triggered ignition in fuel system, and route management to avoid thunderstorms. While significant progress has been made in understanding these phenomenon, much of what we know about lightning strikes to aircraft comes from historical experience and testing. This …
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