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Dissertations / Theses on the topic 'Exhaust'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Bernier, Bryan. "Aerodynamic Characteristics of a Gas Turbine Exhaust Diffuser with an Accompanying Exhaust Collection System." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5126.

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The effects of an industrial gas turbine's Exhaust Collector Box (ECB) geometry on static pressure recovery and total pressure loss were investigated in this study experimentally and computationally. This study aims to further understand how exit boundary conditions affect the performance of a diffuser system as well as the accuracy of industry standard computational models. A design of experiments approach was taken using a Box-Behnken design method for investigating three geometric parameters of the ECB. In this investigation, the exhaust diffuser remained constant through each test, with on

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2

Nybäck, Björn. "Exhaust Pressure Based Misfire Detection." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235541.

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The parts in this report that are classified have been replaced by the symbol □.Even axes in some figures have been erased by the same reason.In emission legislation from California Air Resources Board, CARB, futuredemands on misfire detection in heavy duty diesel vehicles will cover anextended operating area than previous demands. Industry standard has so farbeen using crank shaft speed based methods. It is not obvious that speedbased methods will manage to detect misfire in the extended area.This report shows an alternative approach for misfire detection, based uponmeasured pressure in the e

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3

Viyyuri, Ravi Shankar viyyuri. "Real-Time Exhaust Gas Emission Analysis on Public Transport Buses Equipped with Different Exhaust Control Systems." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1525131853848906.

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4

Lundberg, Joacim. "Non-Exhaust PM10 and Road Dust." Licentiate thesis, Statens väg- och transportforskningsinstitut, Miljö, MILJÖ, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-222155.

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Non-exhaust PM10 is an issue in the urban environment linked to health issues. Emissions of non-exhaust PM10 is relatable to pavement properties. Also of importance is resuspension of road dust stored from surfaces. This depends on the traffic and metrological conditions. Given this, the purpose of the thesis was to give an overview limited to Sweden and the Nordic countries regarding non-exhaust PM10 emissions and road dust. The overview includes how particles are related to human health. Also included is the principle of how particles are emitted from road surface and tyre interaction, both

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5

Nussbaum, Nicholas J. "In-plume measurements of combustion exhaust /." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1447810.

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Thesis (M.S.)--University of Nevada, Reno, 2007.<br>"May, 2007." Includes bibliographical references. Online version available on the World Wide Web. Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2007]. 1 microfilm reel ; 35 mm.

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6

Dennis, C. W. "A Study of Rocket Exhaust Particles." Thesis, Cranfield University, 1996. http://hdl.handle.net/1826/3583.

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The exhaust -plumes generated by rocket motors are of significant military importance for missile detection, recognition and communication due to their electromagnetic emission and propagation properties. The plume is a high temperature, high velocity stream of gas and particles, into which the surrounding air is entrained. With improvements in the modelling of plume gas chemistry and turbulence, particles present in the plume have become more important in the computational prediction of the plume's flow field, and the subsequent prediction of plume emission and propagation characteristics. Th

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7

Fang, Xitian 1963, and Deming 1967 Wan. "Integrated automotive exhaust engineering : uncertainty management." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34631.

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Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2006.<br>Includes bibliographical references (p. 104-108).<br>The global automotive industry has entered a stagnating period. Automotive OEMs and their tier suppliers are struggling for business growth. One of the most important strategies is to improve the engineering efficiency in the product development process. The engineering uncertainties have been identified as the main obstacles in the Lean Engineering practices. This study will be focused on the engineering development process of ArvinMeritor E

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8

Kalsi, Kamaldeep Singh. "A study of exhaust gas residuals." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608906.

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9

Winroth, Marcus. "On Gas Dynamics of Exhaust Valves." Licentiate thesis, KTH, Strömningsfysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202719.

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With increasing effects of global warming, efforts are made to make transportation in general more fuel efficient. When it comes to internal combustion engines, the most common way to improve fuel efficiency is through ‘downsizing’. Downsizing means that a smaller engine (with lower losses and less weight) performs the task of a larger engine. This is accomplished by fitting the smaller engine with a turbocharger, to recover some of the energy in the hot exhaust gases. Such engine systems need careful optimization and when designing an engine system it is common to use simplified flow models o

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10

Wiemeler, Dirk. "Aero acoustic on automotive exhaust systems." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0018.

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Dans les systèmes d'échappement automobile, les sources de bruit d'origine aéro-acoustique représentent une partie importante du contenu fréquentiel, objectivement et subjectivement identifiable. De robustes procédures de tests ont été mises en place mais la simulation du contenu du bruit n'a pas encore fait ses preuves dans les processus de développement au quotidien. Cette thèse montre que le bruit aéro-acoustique provenant de sources type dipôle est dominant pour ce qui concerne les systèmes automobiles. La simulation des écoulements à l'origine de ces bruits spécifiques combinée avec les o

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11

Sementi, Joshua Paul. "A study of jet exhaust-wing interaction /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/10002.

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12

Myhren, Jonn Are. "Low temperature heating in exhaust ventilated rooms." Licentiate thesis, Stockholm : Teknik och hälsa, Technology and Health, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4694.

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13

Dollhopf, Matthew John. "NASCAR RESTRICTOR PLATE EXHAUST MANIFOLD DESIGN STRATEGIES." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4456.

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This paper presents the results of a study on exhaust manifold design for a NASCAR Restrictor plate internal combustion engine. A computer simulation model was developed using Ricardo WAVE software. WAVE is a computer-aided engineering code developed by Ricardo to analyze the dynamics of pressure waves, mass flows and energy losses in ducts, plenums and the intake and exhaust manifolds of various systems and machines. [1] The model was validated against experimental data from a current NASCAR Winston Cup restrictor plate motor. The parameters studied have been exhaust manifold diameters and le

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14

Unosson, Jon. "Acute cardiovascular effects of biofuel exhaust exposure." Doctoral thesis, Umeå universitet, Lungmedicin, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96449.

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Background Anthropogenic air pollution is a global health problem estimated to contribute to millions of premature deaths. Exposure to biomass smoke is common due to varying sources, such as wildfires, indoor cooking over open fires, and residential heating from wood stoves. In urban environments transportation and industry rely heavily on the combustion of fossil fuels yet environmental policies increasingly support a shift to renewable fuels such as biodiesel. It has not been investigated how either wood smoke or biodiesel exhaust affect human health in general or the cardiovascular system i

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15

McMullan, Raymond Keith. "An investigation on exhaust blowdown pulse formation." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359110.

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16

Haney, Mark A. "Topology Optimization of Engine Exhaust-Washed Structures." Wright State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=wright1168022947.

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17

Sherman, Jay Michael. "Inhalation exposure system for diesel exhaust particulates." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2844.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains vii, 112 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 109-112).

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18

Dunshee, James Robert. "Evaluation Of The Engine Exhaust Particle Sizer (eeps) For Real-Time Measurements Of Diesel And Biodiesel Exhaust Particulate Matter." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/547.

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Even at low concentrations, the criteria air pollutant particulate matter (PM) is an environmental and public health hazard. Emissions levels legislated for modern diesel vehicles are so low (~90% lower than 2003) that it has become difficult to accurately measure PM by the regulatory metric: the mass of particles collected on a filter (i.e., the gravimetric method). Additionally, gravimetric analysis cannot measure real-time emission rates, and therefore is unable to characterize high-emitting transient events (e.g., engine starts, stop-and-go driving). By an alternate method, PM can be estim

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19

Nandivada, Rakesh. "Experimental methodology for measurement of diesel exhaust particulates." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5484.

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Thesis (M.S.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains ix, 69 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 59-64).

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20

Laeeq, Muhammad Nadeem. "Performance evaluation of dryer units used in diesel emission measurement systems." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4208.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains viii, 82 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 79-82).

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21

Tiwari, Aseem. "Design, development and qualification of Compact Mobile Emissions Measurement System (CMEMS) for real-time on-board emissions measurement." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4944.

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Thesis (M.S.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains xiii, 125 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 121-125).

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22

Madireddy, Madhava Rao. "Methods for reconstruction of transient emissions from heavy-duty vehicles." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5826.

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Thesis (Ph. D.)--West Virginia University, 2008.<br>Title from document title page. Document formatted into pages; contains xii, 117 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 104-117).

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23

Shade, Benjamin C. "A performance evaluation of the MEMS an on-road emissions measurement system study /." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1592.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains xii, 118 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 102-104).

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24

Meyer, Eric Todd. "Evaluation of exhaust flowrate measurement techniques for a mobile emissions monitoring system." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1855.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains xii, 89 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 67-68).

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Fuller, Andrew D. "A flow rate measurement system for a mobile emissions measurement system." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1903.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains xv, 111 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 89-91).

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26

Riddle, Wesley C. "Design and evaluation of the emissions measurement components for a heavy-duty diesel powered vehicle mobile emissions measurement system (MEMS)." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1939.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains viii, 167 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 128-130).

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Cirillo, Emily D. "Development of a micro-dilution tunnel system for in-use, on-board heavy duty vehicle particulate matter emissions measurement." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2085.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains xiii, 147 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 120-124).

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28

Knight, Jared Gregory. "Measurement of total hydrocarbon emissions with MEMS using a portable FID and a novel exhaust flow meter." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2725.

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Thesis (M.S.)--West Virginia University, 2002.<br>Title from document title page. Document formatted into pages; contains xiii, 155 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 121-123).

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29

Aravelli, Aparna. "Real-time measurement of oxides of nitrogen from heavy-duty diesel engines." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=3265.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains x, 115 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 101-102).

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30

Lee, Y. K. "Plume interference effects on missile bodies at supersonic speeds." Thesis, Queen's University Belfast, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273130.

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31

Blackwood, A. G. L. "The impact of piston design on cool start emissions from a modern direct injection diesel engine with the emphasis upon particulates and hydrocarbons." Thesis, Birmingham City University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298194.

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32

Ramanathan, Sathish Kumar. "Linear Acoustic Modelling and Testing of Exhaust Mufflers." Thesis, KTH, Aeronautical and Vehicle Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4340.

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<p>Intake and Exhaust system noise makes a huge contribution to the interior and exterior noise of automobiles. There are a number of linear acoustic tools developed by institutions and industries to predict the acoustic properties of intake and exhaust systems. The present project discusses and validates, through measurements, the proper modelling of these systems using BOOST-SID and discusses the ideas to properly convert a geometrical model of an exhaust muffler to an acoustic model. The various elements and their properties are also discussed.</p><p>When it comes to Acoustic properties the

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33

Ulusoy, Yavuz Barbaros. "Frequency Domain Computation Of Turbofan Exhaust Noise Radiation." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607234/index.pdf.

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In this study, acoustic noise radiation through a duct in frequency domain is analyzed. Frequency domain linearized Euler equations are solved for turbofan exhaust noise propagation and radiation. The geometry in studied cases is assumed as axisymmetric. The acoustic waves are decomposed into periodic azimuthal modes. Characteristic boundary conditions, and buffer zone boundary conditions are employed. Iterative type pseudo time integration is employed. Nonuniform background flow effect on the radiation pattern is experienced. All computations are performed in parallel using MPI library routin

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34

Törnqvist, Håkan. "Respiratory and cardiovascular responses to diesel exhaust exposure." Doctoral thesis, Umeå universitet, Lungmedicin, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1670.

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Background: Exposure to traffic-derived air pollution is associated to high incidence of respiratory and cardio-vascular morbidity and mortality. Diesel engines and fossil fuel contribute to a great amount to the ambient particulate matter pollution. Exposure to diesel exhaust in healthy volunteers is known to cause inflammatory and oxidative responses in the airways. In contrast, very little is known about the air pollution-related mechanisms behind the adverse cardiovascular effects and why patients with cardiorespiratory disease are more susceptible to the adverse effect of particulate matt

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35

Selås, Magnus. "Exhaust Gas Cleaning with Selective Catalytic Reduction (SCR)." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11615.

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This thesis presents the work around three laboratory experiments conducted in the machinery laboratory at MARINTEK with focus on performance and degrading mechanisms of a Selective Catalytic Reduction system. Höegh LNG has contributed to the thesis from an industrial perspective together with various Norwegian shipping companies. An introduction to emissions from combustion engines is given, with focus of the real pollutants as NOx, SOx, CO, HC and PM. CO2 has not been defined as a real pollutant as it’s not itself toxic, but still is a major concern due to it’s contribution to the greenhous

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Gundmalm, Stefan. "Divided Exhaust Period on Heavy-Duty Diesel Engines." Licentiate thesis, KTH, Förbränningsmotorteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-109529.

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Due to growing concerns regarding global energy security and environmental sustainability it is becoming increasingly important to increase the energy efficiency of the transport sector. The internal combustion engine will probably continue to be the main propulsion system for road transportation for many years to come. Hence, much effort must be put in reducing the fuel consumption of the internal combustion engine to prolong a future decline in fossil fuel production and to reduce greenhouse gas emissions. Turbocharging and variable valve actuation applied to any engine has shown great benef

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Patwary, Shah Miran. "Antimony diffusion from polyester textiles upon exhaust dyeing." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-12807.

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In recent years, environmental authorities in Sweden are reporting about high content of antimony in waste water that is discharging from polyester textile dyeing industries. It is known from available scientific publications that, antimony and its compound is harmful for both human and environment. While dyeing of polyester textiles have a commercial importance and in regards to the environmental issues, the industries are looking for the factors those results in high concentrations of antimony in their dyeing waste water. Dyeing of polyester textile requires high-temperature application in a

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Saindon, Jean-Paul. "Controlled recirculation of exhaust ventilation in Canadian mines." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26734.

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Uncontrolled recirculation of mine air is considered a hazard because it can result in excessive dust and objectionable gas levels. Smoke and gas from a mine fire can also be carried back into the fresh intake air. Recirculation is prohibited by most mining legislations and there is prejudice against its use. Recent experiments in Britain and South Africa have shown that recirculation of mine air can be safely implemented using suitable monitoring instruments. Controlled recirculation of air offers several advantages and shows potential for maintaining the quality of the mine air whilst

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39

Volkmann, Jörg. "Exhaust systems' models investigation by theoretical group methods." Göttingen Cuvillier, 2007.

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Blomqvist, Christoffer. "Thermal barrier coatings for diesel engine exhaust applications." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33264.

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The strive to increase the engine efficiency in terms of fuel consumption and lower emissions have lead to higher demands on materials. In this thesis five different thermal barrier coatings applied using air plasma spraying to three materials commonly used for exhaust application are evaluated. This thesis work was done at Scania CV in Södertälje with main focus on evaluation during thermal cycling. The goal of this thesis is to evaluate the coatings and correlate their behaviour to their characteristic microstructure. The coatings were evaluated through their stability in thermal conductivit

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Abu-Khiran, E. "Steady and unsteady flow losses in automotive exhaust." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268980.

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Ding, Bowen. "Aerodynamics of low pressure steam turbine exhaust systems." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/290137.

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The low pressure (LP) exhaust system presents a promising avenue for improving the performance of large steam turbines. For this reason, LP exhaust systems have attracted the attention of the research community for decades. Nevertheless, we still lack understanding of the flow physics and loss mechanisms in the exhaust system, especially at part-load conditions. It is also unclear how the exhaust system should be designed when its required operating range widens. This thesis provides solutions to these aerodynamic issues through experimental and numerical investigations, and provides tools tha

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Leung, Chin Pui Perry. "Exhaust gas fuel reforming to achieve fuel saving." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4330/.

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As much as 70 to 75% of the energy in the fuel used by a car is turned into waste heat, with more than a third of this released through the exhaust pipe. Catalysis offers a way of recovering exhaust heat. By adding some of the fuel to a portion of the exhaust as it passes through a catalytic reactor, it is possible to produce a gas mixture with a higher heating value than the fuel. This strategy depends, however, on the catalytic reaction consuming heat, while generating readily-combustible products that can be fed back to the engine. An investigation into catalytic exhaust gas fuel reforming

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Law, Thomas Robert. "Multi-segmented liner optimisation for mixed exhaust aeroengines." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612397.

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Wijewardane, M. Anusha. "Exhaust system energy management of internal combustion engines." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/9829.

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Today, the investigation of fuel economy improvements in internal combustion engines (ICEs) has become the most significant research interest among the automobile manufacturers and researchers. The scarcity of natural resources, progressively increasing oil prices, carbon dioxide taxation and stringent emission regulations all make fuel economy research relevant and compelling. The enhancement of engine performance solely using incylinder techniques is proving increasingly difficult and as a consequence the concept of exhaust energy recovery has emerged as an area of considerable interest. Thr

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Majal, Ghulam. "On the Agglomeration of Particles in Exhaust Gases." Licentiate thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235704.

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Particulate emissions from road transportation are known to have an adverse impact on human health as well the environment. As the effects become more palpable, stricter legislation have been proposed by regulating bodies. This puts forward a challenge for the automotive industry to develop after treatment technologies to fulfil the progressively stricter legislation. At present, the most common after-treatment technologies used for particulates are the diesel and gasoline particulate filters. The typical size distribution of the particles is such that the smallest particles in terms of size a

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Walder, John. "Transient Flow Simulations in Exhaust After Treatment Systems." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-168799.

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The exhaust after treatment system is responsible for removing particulates and contaminants from the exhaust gases. The flow entering the SCR, a catalyst utilizing ammonia to reduce NOx emissions, was studied. The quality and distribution of flow entering the SCR plays an important role in the efficiency of the systems. A CFD study was completed initially investigating the impact on solution accuracy of different modeling approaches with respect to pressure drop and flow uniformity entering SCRs. Next, multi-species simulations were completed to analyze different modeling approaches impact on

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Cartwright, Justin W. "The Characterization of an Externally Cooled Exhaust Manifold." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1385982535.

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Gräsberg, Pontus. "IC-Engine Source Characterisation and exhaust system simulations." Thesis, KTH, Marcus Wallenberg Laboratoriet MWL, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299411.

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To be able to predict the sound pressure level emitted by a exhaust system one must be able to describe the source. The source in the form of an engine can linearly be described as a source strength and a source impedance. An IC-engine can acoustically have a non-linear part meaning that the source characteristics have a dependency on the load. The first part of this work investigates through simulation's in GT-Power how these characteristics are affected by the load connected to the source. The Second part of the work combines the source characteristics with simulations of a muffler and compa

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Hunt, Gary Richard. "The fluid mechanics of the Aaberg exhaust hood." Thesis, University of Leeds, 1994. http://etheses.whiterose.ac.uk/4623/.

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Abstract:

In this thesis an investigation of the fluid mechanics of the Aaberg exhaust hood is presented. The Aaberg exhaust hood is unique in its design as the speed of the air flow towards the exhaust inlet is enhanced by the entrainment of fluid into the hood's jet flow. The complex air flow pattern of the hood is governed by the Navier-Stokes equations. However, in this thesis modelling techniques have been developed in order to reduce the complexity of determining the fundamental air flow pattern. The modelling procedure adopted considers the hood's overall air flow to be composed of three componen

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