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Dissertations / Theses on the topic 'High pressure fuel system'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Crescenzo, Domenico. "Pressure measurement in the high pressure fuel system." Thesis, KTH, Förbränningsmotorteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-267549.

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In order to meet the demanding legislations on diesel engines exhaust emissions, an always more accurate control over the amount of fuel injected in the cylinders is required. A comprehensive understanding of the main factors involved in the injection process, therefore, should be achieved. Such factors are the pressure in the common rail, the injection ontime and the temperature at the injector. The rail pressure, in particular, has been the focus of this project: Its accurate acquisition is crucial for the correct determination of the injection duration and, consequently, for an improved con

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2

Glaad, Gustaf. "Pressurizing of high-pressure fuel system forsingle cylinder test cell." Thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-74432.

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This master thesis covers the development of a high-pressure fuel system for compression ignitedfuels such as diesel and diesel-like fuels that will be deployed into a single cylinder test cell at AVLMTC Södertälje, Sweden. The test cell is used by AVL to conduct research and testing of new fuelsfor their customers and this new fuel system will widen the span of fuels able to be tested by theequipment.This thesis focuses on pumping and pressurizing of the fuel, ensuring that all ingoing materialsare non-corrosive in this environment and compatible with the necessary fuels and lastly a safetyan

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3

Pettersson, Eric. "Modelling of high-pressure fuel system for controller development." Thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-386130.

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This master thesis treats the modelling of a common-rail direct fuel injection system where pressure generation is decoupled from the injection process. It has been shown that the fuel pressure plays a vital role for the general performance of the engine, affecting both emissions and efficiency, and it is carefully regulated to achieve optimal performance at different operating points. In an attempt to facilitate the development of the responsible control algorithms, a simulation framework has been requested. A model describing the complete work cycle of the high-pressure fuel system is develo

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4

Aksoy, Can Aksoy. "Fuel consumption measurements and fuelconditioning in high-pressure fuel systemfor single cylinder test cell." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-75439.

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This master thesis is part of a bigger project issued by AVL with the purpose to design a high pressure compression ignition fuel system for their single cylinder test cell at their facility in Södertälje. Typically compression-ignition fuel tests are being run within an operating pressure range of 500-2400 bar, but this system has to be able to run with pressures up to 3500 bar. The project was intended to be carried out by two participants where this master thesis covers the evaluation of how fuel consumption rates shall be measured in the system described above as well as how the fuel shall

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Lawrence, Jacob David. "Design and development of a high pressure ED95 fuel delivery system for a single cylinder test cell engine." Thesis, KTH, Fordonsdynamik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286351.

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Bio-fuels, being the primary alternative to the fossil fuels, used in the internal combustion engines are subjected to constant development. The development of alternative Ethanol Diesel (ED95) formulations at AVL Motortestcenter AB has demanded a test facility capable of evaluating the combustion quality of these specimens. A test cell capable of evaluating fuels operating on the compression ignition concept was required for this reason. The aim of this thesis is to develop a high pressure fuel delivery system for a single cylinder test cell engine. The literature review conducted offered kno

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6

Basara, Adis [Verfasser]. "Evaluation of High Pressure Components of Fuel Injection Systems Using Speckle Interferometry / Adis Basara." Aachen : Shaker, 2007. http://d-nb.info/1166512509/34.

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7

Chalker, Jack Randolph. "Design and Manipulation of a Power-Generating System with High-Temperature Fuel Cells for Hypersonic Applications." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1567169603256774.

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8

Andrén, Filip, and Olav Borgström. "Common Rail - En bränslebesparingsstudie : – En utvärdering av ett nyinstallerat bränsleinsprutningssystem på isbrytaren Ymer." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-50558.

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Följande studie är gjord på uppdrag av Sjöfartsverket. I studien undersöktes hur en installation av ett Common Rail-system ombord på isbrytaren Ymer påverkat bränsleförbrukningen samt utsläppen av kväveoxider. Rådata som loggats ombord på Ymer har analyserat och bearbetat. Material och information från tillverkare, besättning samt teknisk chef på Sjöfartsverket, Albert Hagander har använts under studien. Tillsammans med uppmätta mätdata och tidigare gjord litteraturstudie stöds resultaten i studien. Det är ingen slump att system av Common Rail-typ redan är tillämpat inom de flesta branscher så

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9

Hu, Nao. "An investigation into the characteristics and optimisation of a high-pressure common rail injection system." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28810.

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The primary aim of this research was to predict the emissions and fuel savings when replacing a mechanical fuel oil injection system with a high pressure common rail one. The work in this study consists of two parts. In the first part, a novel routine is proposed for the optimisation of electronic fuel injectors and their dynamic response, including the needle valve opening delay and the needle valve closing delay (The needle valve opening delay refers to the delay between the control signal being trigged and the needle valve being fully open; the needle valve closing delay refers to the delay

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10

Hurt, Libor. "Optimalizace rozhraní svařovaného zásobníku paliva systému common rail." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228588.

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This master’s thesis is aimed to sphere of injection system for diesel engines. The main task of thesis was to invent new concept for high pressure interface of laser welded fuel accumulator, that would able to endure pressure 2000 bars and higher. Also, it would be applicable to serial production. Thesis includes description of diesel system by Bosch, making of design proposals in ProEngineer program and making of stress analyses for some particular elements in Ansys. Whole the work was passed in conjunction with Bosch Diesel development department.

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11

Summonte, Luca. "High pressure fog system." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5685/.

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12

Beyer, Theodore. "The measurement of diesel fuel properties at high pressure." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/19536.

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13

Botteghi, Federico [Verfasser]. "Experimental Investigation of High-Pressure, High-Temperature Solid Fuel Gasification / Federico Botteghi." München : Verlag Dr. Hut, 2016. http://d-nb.info/1094117331/34.

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14

Zhu, Songming 1961. "Phase transition studies in food systems during high pressure processing and its applications to pressure shift freezing and high pressure thawing." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84862.

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High-pressure (HP) depresses the phase-transition point of water especially in the case of ice-I (down to -21°C at about 210 MPa). This phenomenon has several potential advantages in food processing applications, such as pressure shift freezing (PSF) and HP thawing. However, scientific knowledge available in this area is still relatively limited. The main objectives of this research were to investigate the phase-transition behavior of foods under pressure processing in the context of PSF and HP thawing techniques and to evaluate their impact on product quality.<br>Distilled water and fr

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15

Korres, Michael. "Cylinder Pressure Sensor based Engine Combustion and Fuel System Diagnostics." Thesis, KTH, Fordonsdynamik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-203351.

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Nowadays, the developed diagnostics models and software are not capable of locating the root cause of an emerging malfunction, or in other words the responsible component, while the vehicle is up and running. In most cases they are solely able to provide the driver with indications that a fault has been detected within a group of components. Subsequently, it is unavoidable that the vehicle returns to the workshop for a number of standardized tests to be performed, in order to evaluate the condition of the potentially faulty components. The new era in combustion engines and the attempt to fully

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16

Källkvist, Kurt. "Fuel Pressure Modelling in a Common-Rail Direct Injection System." Thesis, Linköpings universitet, Fordonssystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70264.

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The fuel pressure is one of the central control variables of a modern common-rail injection system. It influences the generation of nitrous oxide and particulate matter emissions, the brake specific fuel consumption of the engine and the power consumption of the fuel pump. Accurate control of the fuel pressure and reliable diagnostics of the fuel system are therefore crucial components of the engine management system. In order to develop for example control or diagnostics algorithms and aid in the understanding of how hardware changes affect the system, a simulation model of the system is desi

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17

Southward, James D. "Laser doppler velocimetry in the space-shuttle main engine high-pressure fuel turbopump." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA342224.

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Thesis (M.S. in Aeronautical Engineering) Naval Postgraduate School, March 1998.<br>Thesis advisor(s): Garth V. Hobson. "March 1998." Includes bibliographical references (p. 145-147). Also available online.

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18

Greco, Philip Andrew. "Turbine performance mapping of the space-shuttle main engine high-pressure fuel turbopump." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA306473.

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Thesis (M.S. in Aeronautical Engineering) Naval Postgraduate School, September 1995.<br>Thesis advisor(s): Garth V. Hobson. "September 1995." Includes bibliographical references. Also available online.

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19

Hillstrom, Edward Thomas. "Cathode Pressure Modeling of the Buckeye Bullet II 500kW PEM Fuel Cell System." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275416277.

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20

Cresci, Irene. "High pressure nozzle guide vane cooling system flow characteristics." Thesis, University of Oxford, 2016. http://ora.ox.ac.uk/objects/uuid:b8826eb5-f4ad-4fe8-8730-9134fd9fd183.

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The continuous demand from the airlines for reduced jet engine fuel consumption results in increasingly challenging high pressure turbine nozzle guide vane (NGV) working conditions. The capability to reproduce representative boundary conditions in a rig at the combustor-turbine interaction plane is a key feature when testing NGVs in an engine-representative environment. A large scale linear cascade rig to investigate NGV leading edge cooling systems has been designed with particular attention being paid to creating engine representative conditions at the NGV inlet plane. The combustor simulato

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21

Craven, James M. "Energy efficient solids feed system for high pressure processes." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/7630/.

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A new system for efficiently feeding solid fuels to high pressure processes has been developed over the course of this PhD study. The system, named the Hydraulic Lock Hopper (HLH), takes the form of a new lock hopper that utilises water as an incompressible fluid during the compression stage. It disposes of the need for inert gas or gas compressors as is required by conventional lock hopper systems, and vastly increases their operational efficiency. The HLH has demonstrated the feeding of a range of fuels including wood pellets, torrefied spruce pellets and ground anthracite grains to pressure

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22

Reid, Benjamin A. "An optical investigation of cavitation phenomena in true-scale high-pressure diesel fuel injector nozzles." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6358.

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Efforts to improve diesel fuel sprays have led to a significant increase in fuel injection pressures and a reduction in nozzle-hole diameters. Under these conditions, the likelihood for the internal nozzle flow to cavitate is increased, which potentially affects spray breakup and atomisation, but also increases the risk of causing cavitation damage to the injector. This thesis describes the study of cavitating flow phenomena in various single and multi-hole optical nozzle geometries. It includes the design and development of a high-pressure optical fuel injector test facility with which the ca

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23

Thamanavat, Kanrakot. "High Pressure Phase Equilibria in the Carbon Dioxide + Pyrrole System." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4919.

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The objectives of this work are to measure phase equilibria in the carbon dioxide + pyrrole system and to correlate and predict the phase behavior of this system with a thermodynamic model. This binary system is of interest due to the growing applications of supercritical carbon dioxide as a solvent or reaction medium for pyrrole. Polypyrrole is an electrically conducting polymer of interest in a number of applications such as anti-static coatings. Pyrrole has also been used as a reactant in enzymatic reaction. Knowledge of the phase behavior of carbon dioxide + pyrrole system is therefore nec

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24

Gu, Sai. "Numerical simulations of a high velocity oxy-fuel thermal spraying system." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342062.

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25

Chauk, Shriniwas S. "High-pressure high-temperature control of Hydrogen Sulfide, Sulfur Dioxide and Selenium from fuel/flue gas using Ca-based sorbents /." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488186329503714.

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26

De, Angelis Giacomo. "Modeling of a differential volumetric system for high pressure gas adsorption." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23313/.

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The volumetric system is a widely used experimental method for gas adsorption equilibrium measurements and for the determination of adsorption kinetics. A predictive model was developed in the gPROMS ProcessBuilder platform. Equations for mass and energy balance were implemented firstly for the description of a single-branch volumetric apparatus, and then for a differential (double-branched) system. The model was built starting from the simplest case (Isothermal and ideal gas behaviour) and subsequentially its complexity was increased in order to have a system which is able of describing an

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27

Lagimoniere, Ernest Eugene Jr. "The Design and Construction of a High Bandwidth Proportional Fuel Injection System for Liquid Fuel Active Combustion Control." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34693.

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This last decade experienced a sudden increase of interest in the control of thermo-acoustic instabilities, in particular through the use of fuel modulation techniques. The primary goal of this research was to design, construct and characterize a high bandwidth proportional fuel injection system, which could be used to study the effect of specific levels of fuel modulation on the combustion process and the reduction of thermo-acoustic instabilities. A fuel injection system, incorporating the use of a closed loop piston and check valve, was designed to modulate the primary fuel supply of an

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28

Haynes, Comas Lamar. "A study of high pressure operation of isothermal tubular solid oxide fuel cells and their integration with gas turbines." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/16762.

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29

Cairns, Paul-Emanuel. "High Pressure Oxy-fired (HiPrOx) Direct Contact Steam Generation (DCSG) for Steam Assisted Gravity Drainage (SAGD) Application." Thesis, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24329.

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Production in Canada’s oil sands has been increasing, with a projected rate of 4.5 million barrels per day by 2025. Two production techniques are currently used, mining and in-situ, with the latter projected to constitute ~57% of all production by that time. Although in-situ extraction methods such as Steam Assisted Gravity Drainage (SAGD) are less invasive than mining, they result in more greenhouse gas (GHG) emissions per barrel and require large amounts of water that must be treated and recycled with a make-up water requirement of about 10%. CanmetENERGY is developing a steam generation

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30

Reyes, Salvador Byron Fernando. "DEVELOPMENT OF A HIGH-PRESSURE, HIGH-TEMPERATURE SUPERHEATED STEAM SYSTEM (WATER TREATMENT, VAPORIZER, THERMAL DESIGN, MODELING)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275460.

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31

Bocian, Artur. "Gas-loading apparatus for large-volume high-pressure cell." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/6235.

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The Paris-Edinburgh cell (PEC) is a widely used opposed-anvil device for neutron scattering. Since its development, it has been used to study a number of samples loaded as solids or liquids. However, studying gases at room temperature has not yet been possible. Up until now only a few gases could be loaded as liquids, in cryogenic conditions. Thus, it was impossible to study many gases and gas mixtures and also it was difficult to use gases as pressure-transmitting media (PTM). In order to overcome these limitations, a technique that would enable loading of gases into the PEC was required. The

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Chen, Shr-Hung. "Novel design and optimization of vehicle's natural gas fuel tank." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177607369.

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33

Sutherland, Erika Susanne. "Analysis of the performance and stability of a passive recirculation loop for hydrogen delivery to a PEM fuel cell system." Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-theses/443.

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Proton Exchange Membrane (PEM) fuel cells are becoming an increasingly important alternative to combustion engines as the fossil fuel reserves are depleted. Several papers have presented steady state analyses of the system, but few are known to present dynamic analysis of the flow and control of the hydrogen delivery process. This thesis presents the dynamic analysis of hydrogen delivery to a PEM fuel cell system. The hydrogen is delivered to the anode with use of an ejector for passive recirculation. The system to be studied consists of the manifolds, ejector, and pressure control valve. Mode

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34

Donnelly, Mary-Ellen. "Neutron diffraction of hydrogen inclusion compounds under pressure." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/31471.

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When ice is compressed alongside a gas, crystalline 'host - guest' inclusion compounds known as gas clathrate hydrates form. These compounds are of interest not only for their environmental and possible technological impact as gas storage and separation materials, but also for their ability to probe networks not readily adopted by the pure `host' water molecules, and to study the interactions between water and gas molecules. Despite the pressure dependent crystal structures being fully determined for a large variety of `guest' gas species there is still relatively little known about the crysta

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35

Rutkowski, Richard J. "Cold flow simulation of the alternate turbopump development turbine of the space shuttle main engine high pressure fuel turbopump." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/28034.

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Approved for public release; distribution is unlimited<br>Completion of the installation at the Naval Postgraduate School of a cold-flow test facility for the turbine of the Space Shuttle Main Engine High Pressure Fuel Turbopump is reported. The article to be tested is the first stage of the Alternate Turbopump Development model designed and manufactured by Pratt & Whitney. The purpose of the facility is to enable the development of non- intrusive flow measurements and comparison of those measurements with numerical simulations. Flow field characteristics of the turbine stator were predicted u

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Tsang, Yuen-lam Jenny, and 曾琬林. "Feasibility of a food waste to energy system in high-rise buildings." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/194574.

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Hong Kong is currently generating more than 3000 tons of food waste every day which generate air pollution problem and create odor nuisance to residents near landfill site. It is critical for us to reduce waste generation at sources and find ways to treat our food waste instead of solely rely on landfill. The aim of this paper is to propose a food waste to energy system to be installed in high-rise buildings which helps save our landfill space and utilize waste energy to generate electricity and heat for building use. It is estimated that around one ton of food waste will be generated from a d

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Jośī, Dilīpa. "REAL-TIME DIGITAL CONTROL FOR BIOMASS LIQUEFACTION SYSTEM (HIGH PRESSURE, TEMPERATURE, MICROPROCESSOR, AUTOCLAVE)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275423.

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38

Shepherd, Robert. "The generation and classification of small leaks in a high pressure water system." Thesis, City University London, 2011. http://openaccess.city.ac.uk/1174/.

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This report investigates the detection of small leaks from the primary system of a Nuclear Pressurised Water Reactor. Leak rates of 12 g/s are invariably difficult to detect and locate. The typical leak indicators in a nuclear reactor control room are a drop in pressure and level from the pressuriser, and the air sampler detecting particulate matter. However, in both cases the leak is normally quite substantial by the time any parameters or values are obviously outside the normal operating conditions. Therefore, a small leak could go undetected for a significant amount of time. As part of the

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Turner, Joel David. "The performance of a nuclear fuel-matrix material in a sealed CO₂ system." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/the-performance-of-a-nuclear-fuelmatrix-material-in-a-sealed-co2-system(caaeee7f-9551-485b-b3dc-fe14e75bcc5a).html.

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An advanced concept high temperature reactor (HTR) design has been proposed - The ‘U-Battery’, which utilises a unique sealed coolant loop, and is intended to operate with minimal human oversight. In order to reduce the need for moving parts within the design, CO2 has been selected as a candidate coolant, potentially allowing a naturally circulated system. HTR fuel is held within a semi-graphitic fuel-matrix material, and this has not previously been tested within a CO2 environment. Graphite in CO2 is subject to two oxidation reactions, one thermally driven and one radiolytically. As such, the

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McKee, Joseph R. "Experimental and computational investigation of cold-flow through the turbine of the space-shuttle main engine high-pressure fuel turbopump." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA356000.

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Thesis (M.S. in Aeronautical Engineering) Naval Postgraduate School, September 1998.<br>"September 1998." Thesis advisor(s): Garth V. Hobson. Includes bibliographical references (p. 115-116). Also available online.

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Studevan, Colin C. "Design of a cold-flow test facility for the high-pressure fuel turbopump turbine of the space-shuttle main engine." Thesis, Monterey, California. Naval Postgraduate School, 1993. http://hdl.handle.net/10945/19733.

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Approved for public release; distribution is unlimited<br>The design and installation at the Naval Postgraduate School of a cold-flow test facility for the turbine of the high-pressure fuel turbopump of the Space Shuttle Main Engine, is reported. The specific article to be tested is the 'Alternate Development Model' designed and manufactured by Pratt & Whitney. The design of individual components is documented. The installation of the facility subsystem is described in detail. A preliminary estimation of turbine performance is made.

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DeCastro, Jonathan Anthony. "Design and Validation of a High-Bandwidth Fuel Injection System for Control of Combustion Instabilities." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31839.

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The predictive design of fuel injection hardware used for active combustion control is not well established in the gas turbine industry. The primary reason for this is that the underlying mechanisms governing the flow rate authority downstream of the nozzle are not well understood. A detailed investigation of two liquid fuel flow modulation configurations is performed in this thesis: a piston and a throttle-valve configuration. The two systems were successfully built with piezoelectric actuation to drive the prime movers proportionally up to 800 Hz. <p>Discussed in this thesis are the importan

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Maynard-Casely, Helen E. "New mineralogy of the outer solar system and the high-pressure behaviour of methane." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/4304.

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This thesis will introduce the study of methane as a mineral. Along with ammonia and water, methane is one of the main planetary-forming materials in the outer solar system. The topic of `new mineralogy of the outer solar system' is outlined and introduced, and previous studies in the area are discussed. This review identities a lack of highpressure structural knowledge on methane when compared to ammonia and water. The significance of this knowledge for the study of the planets Neptune and Uranus is discussed. The crystal structures of methane above 5.2 GPa were, prior to this thesis, unknown

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Hudon, Pierre. "The study of melts in the ternary CaO-MgO-SiO2 at high pressure and the nature of immiscibility in binary systems /." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35897.

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A review of immiscibility data in 62 silicate, borate and germanate binaries permits identification of four groups of cations displaying different immiscibility behaviour. The first group consists of network-modifier cations which have ionic radii &gsim; 87.2 pm and coordination numbers equal to, or higher than, 5 (e.g. Ca2+, La3+, U4+). The second group involves cations with ionic radii &lsim; 87.2 pm. They have at least two coordination numbers: the first one is always 4 and the second is ≥5; for this reason they are called amphoterics (e.g. Li1+, Mg2+, Al3+). The third group contains cat

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Nomnqa, Myalelo Vuyisa. "Design of a domestic high temperature proton exchange membrane fuel cell cogeneration system : modelling and optimisation." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2574.

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Thesis (DTech (Chemical Engineering))--Cape Peninsula University of Technology, 2017.<br>Fuel cells are among power generation technologies that have been proven to reduce greenhouse gas emissions. They have the potential of being one of the most widely used technologies of the 21st century, replacing conventional technologies such as gas turbines in stationary power supplies, internal combustion engines in transport applications and the lithium-ion battery in portable power applications. This research project concentrates on the performance analysis of a micro-cogeneration system based o

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Keybl, Jaroslav. "A microreactor system for high-pressure, multiphase homogeneous and heterogeneous catalyst measurements under continuous flow." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/70399.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2011.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 194-206).<br>The shift towards biomass and lower quality fossil fuel feedstocks will require new conversion approaches. Catalysis will be critical in the processing of these new feedstocks. By studying catalysis at industrially relevant conditions, it may be possible to reduce the time and cost of developing new catalyst systems. Microreactors enable the study of multiphase catalyst systems at pressure

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Schiller, Noah Harrison. "Design and Validation of a Proportional Throttle Valve System for Liquid-Fuel Active Combustion Control." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9843.

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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 thesis focuses on the development and implementation of a high-bandwidth, proportional modulation system for liquid-fuel active combustion control. The throttle valve modulation system, discussed in this thesis, uses a 500-um piezoelectric stack coupled with an off-the-shelf valve. After comparing th

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Wu, Yi. "Experimental investigation of laminar flame speeds of kerosene fuel and second generation biofuels in elevated conditions of pressure and preheat temperature." Thesis, Rouen, INSA, 2016. http://www.theses.fr/2016ISAM0011/document.

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La vitesse de flamme laminaire représente une grandeur physique clé à mesurer car elle permet d'obtenir des données fondamentales sur la réactivité, la diffusivité et l'exothermicité du carburant. Elle est également un des paramètres utilisés pour le développement et la validation des mécanismes réactionnels détaillés ainsi que pour la modélisation de la combustion turbulente. Bien que cette grandeur physique ait fait l'objet de nombreuses études expérimentales depuis plusieurs décennies, sa méconnaissance sur des carburants multi-composant dans des conditions haute-pression et haute-températu

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Tuia, Jacob Talailetalalelei. "Correlating Pressure, Fluidization Gas Velocities, andSolids Mass Flowrates in a High-PressureFluidized Bed Coal Feed System." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7546.

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The goal of this thesis was to understand what parameters would be most impactful when delivering dry, pulverized coal in a dilute-phase, with a high-pressure feed-system to a pressurized oxy-combustion (POC) reactor. Many studies have conveyed materials in dense-phase plugs at high-pressure or in dilute-phase flows at atmospheric pressure. Very few studies have fluidized and conveyed materials in dilute-phase flows at high pressure, as we needed to. Additionally, studies which might have been applicable based upon system -pressure and -phase delivered findings that were empirically based and

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PAN, HSIEN TE, and 潘顯德. "Study of Common Rail High Pressure Fuel Injection System for Large Marine Diesel Engine." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/00825578235732651523.

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碩士<br>國立高雄海洋科技大學<br>輪機工程研究所<br>104<br>In response to increasingly tough international environmental regulations and rising oil prices, the development of marine diesel engines, worth exploring in depth for. At present the mainframe manufacturers are mustering their efforts to develop high-performance fuel-efficient, saving energy and environmentally friendly hosts. The heart is the host of the high-pressure fuel injection system, fuel injection performance upgrade if the better to promote as much as possible to achieve complete combustion of fuel, so that more output horsepower can save fuel a

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