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1

Ghelfi, Matteo. "Large Eddy Simulation in internal combustion Engine." Phd thesis, Matteo Ghelfi, 2013. https://tuprints.ulb.tu-darmstadt.de/3600/7/Diss_Matteo.pdf.

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Abstract Large Eddy Simulation in internal combustion Engine Dipl.-Ing Matteo Ghel� The internal combustion (IC) engine simulation is nowadays one of the most difficult proceeding during engine development. Simultaneously this is one of the most important phase because it leads to better acknowledgment of in-cylinder phenomena and suggests new method of emission reduction and control.\\ Large Eddy Simulation (LES) can help this process because of its instationary nature, in perfect agreement with motion, injection and combustion, typical instationary components in this kind of study.\\ Th
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2

Saville, Allan Charles. "Numerical simulation of the Pivotal internal combustion engine." Thesis, University of Canterbury. Mechanical Engineering, 2002. http://hdl.handle.net/10092/6625.

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This thesis describes the development of a one-dimensional internal combustion engine simulation program for the Pivotal two-stroke engine. The Pivotal two-stroke engine has many features in common with the standard reciprocating piston engine, but differs in its novel kinematics, which are based around a four bar linkage. The new engine arrangement opens up many new design options and required a flexible and specific simulation tool for research and development. The initial project goals were to develop a simulation code, validate the code against engine data and develop a user interface for
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3

Zhao, Yong. "Computer simulation of gas dynamics in engine manifolds." Thesis, University of Manchester, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318589.

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4

Taylor, Oliver. "Improving the performance of internal combustion engines through lubricant engineering." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:4db8f32e-8260-4cff-ad57-08bfa0b9568e.

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Low friction lubricant development provides a worthwhile contribution to vehicle CO<sub>2</sub> emission reduction. Conventional low friction lubricant development focuses on empirical processes using out dated engine technology and old test methods. This strategy is inefficient and restricts the lubricant's potential. A new method proposed in the present research combines tribological simulations with rig, engine and vehicle tests. This approach provides insights undocumented until now. The contribution to CO<sub>2</sub> emission reduction from individual engine components on vehicle drive cy
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5

Ellgas, Simon. "Simulation of a hydrogen internal combustion engine with cryogenic mixture formation /." Göttingen : Cuvillier, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016379896&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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6

Hammarlund, Pär. "Simulation and Analyis of a Continuous Variable Cam Phasing Internal Combustion Engine." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-12170.

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<p>The development of fuel efficient internal combustion engines (ICE)have resulted in a variety of different solutions. One of those are the variable valve timing and an implemenation of such is the Continuous Variable Cam Phasing (CVCP). This thesis have used a simulation package, psPack, for the simulation of the gas exchange process for an ICE with CVCP. The purpose of the simulations was to investigate what kind of design parameters, e.g. the length of an intake pipe or the duration of combustion, that were significant for the gas exchange process with the alternation of intake pressure,
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7

Yavuz, Ibrahim. "Refined turbulence models for simulation of IC-engine cylinder flows." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1314.

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Thesis (Ph. D.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains xiii, 164 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 153-164).
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8

Ahmed, Fayez-Shakil. "Modeling, simulation and control of the air-path of an internal combustion engine." Phd thesis, Université de Technologie de Belfort-Montbeliard, 2013. http://tel.archives-ouvertes.fr/tel-01002113.

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Today's globally competitive market and its associated environmental and social issues of sustainable development are major challenges for the automobile industry. To meet them, the industry needs to invest in high performance development tools. For improving engine performance in terms of consumption and emission, the interactions between the subsystems of the engine air-path need to be understood. This thesis followed two major axes of research in this context. First, the problems related to the modeling of the global air-path system were studied, which include the airflow characteristics be
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9

Sakowitz, Alexander. "Computation and Analysis of EGR Mixing in Internal Combustion Engine Manifolds." Doctoral thesis, KTH, Mekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-117911.

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This thesis deals with turbulent mixing processes occurring in internal combustion engines, when applying exhaust gas recirculation (EGR). EGR is a very efficient way to reduce emissions of nitrogen oxides (NOx) in internal combustion engines. Exhaust gases are recirculated and mixed with the fresh intake air, reducing the oxygen con- centration of the combustion gas and thus the peak combustion temperatures. This temperature decrease results in a reduction of NOx emissions. When applying EGR, one is often faced with non-uniform distribution of exhaust among and inside the cylinders, deteriora
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10

Sone, Kazuo. "Unsteady simulations of mixing and combustion in internal combustion engines." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/12171.

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11

Ghelfi, Matteo [Verfasser], Johannes [Akademischer Betreuer] Janicka, and Jens [Akademischer Betreuer] Lang. "Large Eddy Simulation in internal combustion Engine / Matteo Ghelfi. Betreuer: Johannes Janicka ; Jens Lang." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2013. http://d-nb.info/1108093272/34.

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12

Blacodon, Yohan. "Development of meshless methods and application to numerical simulation of internal aerodynamic combustion engine." Paris 6, 2011. http://www.theses.fr/2011PA066654.

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La simulation numérique de l’aérodynamique interne des chambres de combustion de moteurs automobiles est caractérisée par des déplacements complexes d’éléments mobiles (piston, soupapes d’admission et d’échappement,. . . ) et par de fortes variations volumétriques, qui causent régulièrement des problèmes numériques avec les méthodes classiques utilisant des maillages du domaine de calcul. Avec ces méthodes (EF, VF), qui utilisent des éléments polyhèdriques (hexahèdres, tétrahèdres, prismes,. . . ), il est nécessaire de changer périodiquement le maillage, afin de s’adapter à la nouvelle géométr
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13

Conradie, P. A. (Petrus Alwyn). "The development of a dynamic engine-testing facility." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52509.

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Thesis (MScEng.)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: The last two decades have seen many changes within the automotive industry. Many advances have been made in the design, research and development of the internal combustion engine and technological progress made in the integrated-circuit and computer industry has resulted in the availability of reliable low-cost electronic components. These components have, over time, been incorporated into the very hearts of engines, thereby allowing for the accurate control of engine functions and processes to an extent that was p
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14

Huang, Xiaodan. "Coupling hybrid CFD models in simulating IC engine flows." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/13063.

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A novel concept which couples ID and 2D CFD models in a simulation of unsteady lC engine flows was investigated, and such a coupled model was developed. Two unified solution procedures which are capable of predicting mixed compressible and incompressible flow fields found in an engine were developed and comparatively studied. One is the pressure correction algorithm, the other is the block implicit algorithm. They provided platforms for the implementation of coupled models. Second order spatial and Euler backward time differencing schemes were adopted. The comprehensive comparative studies wer
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15

Rogers, David R. "A model based approach for determining data quality metrics in combustion pressure measurement. A study into a quantative based improvement in data quality." Thesis, University of Bradford, 2014. http://hdl.handle.net/10454/14100.

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This thesis details a process for the development of reliable metrics that could be used to assess the quality of combustion pressure measurement data - important data used in the development of internal combustion engines. The approach that was employed in this study was a model based technique, in conjunction with a simulation environment - producing data based models from a number of strategically defined measurement points. A simulation environment was used to generate error data sets, from which models of calculated result responses were built. This data was then analysed to determine th
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16

Stockar, Stephanie. "Model-Order Reduction for Nonlinear Distributed Parameter Systems with Application to Internal Combustion Engine Modeling and Simulation." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1372847649.

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17

Saleh, Naseer Ahmed. "Investigation of reciprocating internal combustion engine structure response and vibration transmission using a hydraulic simulation technique." Thesis, University of Southampton, 1987. https://eprints.soton.ac.uk/52287/.

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The success of theoretical engine noise prediction, using such techniques as finite element modelling, is highly dependent upon the understanding of the various mechanisms of noise generation in the running engine. The forcing mechanism of an operating engine is complicated as it involves a large number of forces taking place simultaneously or in rapid succession at various positions in the structure. A number of test methods have been developed to simulate individually each one of these loading mechanisms on non-running engines. These test methods are reviewed in this thesis with an objective
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18

Yassine, Mohamad. "Multi-physics modeling of the intake line of an internal combustion engine." Thesis, Ecole centrale de Nantes, 2019. http://www.theses.fr/2019ECDN0005.

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La concurrence entre les constructeurs automobiles pour introduire les solutions les plus innovantes est de plus en plus importante. Depuis quelques années, la simulation est largement utilisée dans le domaine d’automobile. Concernant l’étude de la dynamique des gaz et de la propagation des ondes de pression dans le système d’admission d’un moteur à combustion interne, qui ont des effets significatifs sur le comportement du moteur, une modélisation précise est nécessaire afin d’obtenir de bons résultats. L’objectif principal de la méthodologie présentée dans cette thèse est de réduire le temps
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19

Sohm, Volker Michael. "Hybrid turbulence simulation to predict cyclic variations in internal combustion engines /." Göttingen : Cuvillier, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016478218&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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20

Kerachian, Amirali. "Implementation, Validation, and Evaluation of 1D-3D CFD Co-simulation for Cooling System of Internal Combustion Engine." Thesis, KTH, Fordonsdynamik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280563.

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Internal combustion engines, electric motors and batteries generate a significant amount of heat during operation that needs to be extracted by cooling systems. A cooling system is designed and installed to extract the generated heat and maintain the system temperature in an optimal range. Overheating has several unfavorable outcomes such as less durability and lower energy efficiency. The cooling system consists of several components such as hoses, flow splitters, valves, heat exchangers, coolant, pump, etc. The coolant, as the working fluid, is pumped to different heat generator component to
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21

Berger, Sven [Verfasser]. "Massively Parallel Large-Eddy Simulation Solver for Internal Combustion Engines / Sven Berger." München : Verlag Dr. Hut, 2021. http://d-nb.info/123284814X/34.

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22

Catellani, Cristian <1982&gt. "Development and Assessment of Large Eddy Simulation Methodology for Internal Combustion Engines." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7413/.

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Large Eddy Simulation (LES) represents nowadays one of the most promising techniques for the evaluation of the dynamics and evolution of turbulent structures characterizing Internal Combustion Engines (ICE). The demand for a high level of resolution accuracy as well as the need to evaluate different scenarios and system configurations lead to considerable computational and economic costs for both the hardware infrastructure and the licensing fees of commercial codes. In such context, the present Doctoral project has the objective to define the most suitable numerical methodology to perform
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23

Carpenter, Nolan A. W. "A study of exergy destruction and methods improving second law efficiency in common production engines using a thorough analysis of engine simulation results." Birmingham, Ala. : University of Alabama at Birmingham, 2009. https://www.mhsl.uab.edu/dt/2009m/carpenter.pdf.

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24

Kumar, Deepak. "Numerical simulation of flows in an active air intake device of internal combustion engine with pulsated air flow." Thesis, Ecole centrale de Nantes, 2018. http://www.theses.fr/2018ECDN0004/document.

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Les émissions polluantes à l’échappement des véhicules automobiles sont l'une des principales sources de pollution de l'air dans le monde d'aujourd'hui. Par conséquent, la législation a évolué afin de limiter ces émissions. L'un des aspects clés pour répondre consiste à bien maîtriser les échanges gazeux au sein du moteur à combustion interne. Cette amélioration est possible par l'optimisation de répartiteurs d'admission d'air. Dans ces répartiteurs d'admission d'air, la maitrise de l’écoulement de type tumble est une piste de progrès. Des volets sont installés à la sortie du répartiteur afin
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25

Buhl, Stefan [Verfasser], Christian [Akademischer Betreuer] Hasse, and Andreas [Akademischer Betreuer] Dreizler. "Scale-resolving simulations of internal combustion engine flows / Stefan Buhl ; Christian Hasse, Andreas Dreizler." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2018. http://d-nb.info/1164157965/34.

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26

White, Thomas J. "Development of a parametric analysis microcomputer model for evaluating the thermodynamic performance of a reciprocating Brayton cycle engine." PDXScholar, 1987. https://pdxscholar.library.pdx.edu/open_access_etds/3794.

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In this thesis, applicable data from research on IC engines have been adapted to PACE engine designs. Data from studies on heat transfer, friction, and pressure losses, in particular, have been used. Certain parameters which define operation and design characteristics appear to influence PACE engine performance very strongly. Some of the more critical parameters, notably friction and heat transfer coefficients, must be determined experimentally if accurate model results are to be expected. Pressure ratio, compressor RPM, and maximum combustor temperature, the independent operating parameters,
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27

Baumann, Michael [Verfasser]. "Towards large eddy simulation of reactive flows for internal combustion engines / Michael Baumann." Aachen : Shaker, 2013. http://d-nb.info/1051570425/34.

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28

Roux, Benjamin. "Couplage entre simulation système et simulation aux grandes échelles pour la simulation multi-échelles de moteurs à combustion interne." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066633/document.

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La réduction des émissions de dioxyde de carbone et de polluants réglementés (oxydes d'azote, hydrocarbures, particules...) dans les moteurs à allumage commandé est possible via l'apport de nouvelles technologies comme le downsizing, l'injection directe, la suralimentation, etc... Toutefois, les gains apportés par ces technologies, qui complexifient grandement le groupe motopropulseur, sont réduits du fait qu'elles induisent aussi une augmentation de l'intensité de certains phénomènes tels que les variations cycliques de la combustion (VCC) ou les combustions anormales. La compréhension de ces
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29

Nguyen, Minh Thuong [Verfasser], and Andreas [Akademischer Betreuer] Kempf. "Large eddy simulation of internal combustion engine with efficient, particle-based moving immersed boundaries / Minh Thuong Nguyen ; Betreuer: Andreas Kempf." Duisburg, 2017. http://d-nb.info/1141053624/34.

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30

Afailal, Al Hassan. "Numerical simulation of non-reactive aerodynamics in Internal Combustion Engines using a hybrid RANS/LES approach." Thesis, Pau, 2020. http://www.theses.fr/2020PAUU3028.

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L'aérodynamique interne est un élément fondamental pour améliorer la combustion dans les moteurs à allumage commandé. Une meilleure maitrise des écoulements internes est permise grâce aux outils de simulation CFD qui sont de plus en plus utilisés dans le processus de développement des moteurs à allumage commandé. Cette thèse avait pour objectif d’étendre l'approche hybride RANS/LES-temporelle dite HTLES, initialement dédiée pour des écoulements statistiquement stationnaires, aux écoulements moteurs avec des parois mobiles et des modes opératoires cycliques, puis de la valider dans des configur
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31

Rose, Adam. "Application of a continuously variable transmission to engine boosting and exhaust energy recovery systems." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636513.

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Governments across the world are implementing legislation for ever more strict limits for vehicle emissions; combined with customer expectations for growing levels of performance and equipment, automotive manufacturers face a significant challenge. With the aim of meeting this challenge, downsizing is an established trend in passenger car engine development. However, since downsizing is commonly achieved through pressure charging (turbocharging, for example), the associated benefits in improved fuel economy and emissions are often obtained at the expense of engine dynamic response, and, conseq
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32

Rieß, Alexander [Verfasser]. "Model Order Reduction Based Simulation and Optimization of Large Bore Internal Combustion Engines / Alexander Rieß." Aachen : Shaker, 2015. http://d-nb.info/1074088212/34.

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33

Raffai, Peter. "Modeling the Impact of Piston Rings on Oil Consumption of Internal Combustion Engines." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-316144.

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V rámci této práce byl vyvinut komplexní simulační nástroj, vycházející z výpočtového modelování fyzikálních a chemických dějů, který je doplněn vhodnými matematickými postupy. Výsledný software je schopen stanovit ztrátový výkon sady pístních kroužků pomocí účinků klíčových mechanismů a jejich vzájemné interakce při standardním provozu pístních kroužků. Simulační výstupy byly navrženy v souladu se zájmy průmyslové praxe, např. určení objemového toku plynů pístní skupinou, ztrátové výkony vlivem tření a spotřeba oleje, která je ovlivněna sadou pístních kroužků. Při vývoji simulačního modelu by
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34

Soler, Blanco Pablo. "Simulation and modelling of the performance of radial turbochargers under unsteady flow." Doctoral thesis, Universitat Politècnica de València, 2020. http://hdl.handle.net/10251/141609.

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[ES] Está fuera de toda duda que la industria del automóvil está viviendo una profunda transformación que, durante los últimos años, ha progresado a un ritmo acelerado. Debido a la crecientemente estricta regulación sobre emisiones contaminantes y la necesidad de satisfacer la siempre creciente demanda de movilidad sostenible, es necesario que los motores de combustión modernos reduzcan su consumo y emisiones manteniendo el rendimiento del motor. Para enfrentarse a este desafío, los ingenieros de investigación y desarrollo han redoblado sus esfuerzos a la hora de diseñar y mejorar los modelos
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35

Pant, Gaurav. "Hybrid Dynamic Modelling of Engine Emissions on Multi-Physics Simulation Platform. A Framework Combining Dynamic and Statistical Modelling to Develop Surrogate Models of System of Internal Combustion Engine for Emission Modelling." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/17223.

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36

Moritz, Henrique. "Desenvolvimento de um motor de combustão interna para Fórmula SAE." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18147/tde-28072016-073720/.

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A presente dissertação trata do projeto de um motor de combustão interna de quatro tempos, ciclo Otto, destinado à categoria de competição Formula SAE, adequado ao mercado brasileiro. Uma extensa pesquisa bibliográfica e de mercado foi realizada para o direcionamento do projeto, além de análises experimentais para obtenção de dados. No estudo experimental foi utilizado um motor monocilíndrico de 300 cc de deslocamento volumétrico, arrefecido a ar, oriundo de uma motocicleta comercial atual, denominado nesta dissertação como \"motor base\". Esse motor foi instalado em uma bancada de dinamômetro
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37

Silva, José Antônio da. "Estudo dos processos de admissão e exaustão utilizando ensaio experimental e simulação de um motor de combustão interna a etanol aspirado e turboalimentado." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-10022017-161613/.

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O processo de admissão e exaustão exercem grande influência no desempenho de um motor a combustão interna. Vários têm sido os estudos para conhecimento e detalhamento do comportamento dos parâmetros que interferem nesses processos, nas últimas décadas. Este trabalho voltou-se principalmente para o ensaio experimental de um motor do ciclo Otto utilizando etanol como combustível, avaliando o desempenho deste motor utilizando três tipos distintos de comando de válvulas e dois coletores de admissão diferentes em sua geometria, além do uso da turbo - alimentação. Numa etapa complementar fez-se uma
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38

Aquino, Phillip A. "PREDICTION OF PREMIXED INTERNAL COMBUSTION ENGINE MASS FRACTON BURNED PROFILES USING A PHYSICAL FORM OF THE WIEBE FUNCTION AND THE THEORY OF TURBULENT FLAME BRUSH THICKNESS DYNAMICS." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1606987013001077.

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39

Soriano, Bruno Souza. "Análise numérica transiente com validação experimental do escoamento em motores de combustão interna considerando diferentes aberturas de válvula." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/118887.

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Com o crescente aumento dos problemas ambientais relacionados à emissão de poluentes, normas cada vez mais rigorosas estão sendo implementadas para diminuir a emissão de gases nocivos provenientes da queima de hidrocarbonetos em motores de combustão interna. Um importante fator que influencia na geração de gases poluentes em motores é o comportamento do escoamento no cilindro, desde o início da admissão até a fase de combustão. O presente trabalho realiza um estudo numérico com validação experimental do escoamento no motor Honda GX35, considerando diversas aberturas de válvula fixas e diferenç
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40

Taconnet, Solange. "Étude des réactions d'oxydation de l'isopentane et du néopentane en réacteur continu agité." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL100N.

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Le présent travail est une contribution à l'étude de l'auto-inflammation des hydrocarbures, responsable du cliquetis dans les moteurs à allumage commande. Une comparaison des mécanismes d'oxydation du néopentane et de l'isopentane, élargie aux autres pentanes puis à certains alcanes doit permettre d'expliquer l'évolution des indices d'octane dans la famille des pentanes. L’étude expérimentale des réactions d'oxydation du néopentane et de l'isopentane est conduite en réacteur continu auto-agité par jets gazeux, à une température de 600°C et pour des temps de passage variant entre 0,37 et 1,18 s
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41

Galzin, Fabienne. "Contribution à la modélisation de la combustion dans les moteurs a allumage commandé." Rouen, 1996. http://www.theses.fr/1996ROUES064.

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La propagation d'une flamme prémélangée turbulente dans une chambre de combustion fermée est étudiée par l'approche fonction densité de probabilité (pdf) des variables fraction et enthalpie massiques. L'allumage et l'interaction flamme-paroi peuvent ainsi être représentés également. La résolution de l'équation pour la pdf jointe est effectuée par une méthode Monte Carlo lagrangienne couplée à un code de calcul eulérien. Deux modèles de diffusion turbulente sont présentés et étudiés : le premier suppose classiquement une diffusion de type gradient alors que le second repose sur la dispersion tu
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42

Petrov, Miroslav. "Biomass and Natural Gas Hybrid Combined Cycles." Licentiate thesis, KTH, Energy Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1660.

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<p>Biomass is one of the main natural resources in Sweden.Increased utilisation of biomass for energy purposes incombined heat and power (CHP) plants can help the country meetits nuclear phase-out commitment. The present low-CO2 emissioncharacteristics of the Swedish electricity production system(governed by hydropower and nuclear power) can be retained onlyby expansion of biofuels in the CHP sector. Domestic Swedishbiomass resources are vast and renewable, but not infinite.They should be utilised as efficiently as possible in order tomeet the conditions for sustainability in the future.Applic
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43

Tagliante-Saracino, Fabien. "Combined study by Direct Numerical Simulation and optical diagnostics of the flame stabilization in a diesel spray." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLC017/document.

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La compréhension du processus de stabilisation des flammes Diesel constitue un défi majeur en raison de son effet sur les émissions de polluants. En effet, la relation étroite entre la distance de lift-off (distance entre la flamme et l’injecteur) et la production de suie est maintenant bien établie. Cependant, différents mécanismes de stabilisation ont été proposés mais sont toujours sujets à discussion. L'objectif de cette thèse est de fournir une contribution expérimentale et numérique pour identifier les mécanismes de stabilisation majeurs.La combustion d'un spray n-dodécane issu d'un inje
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44

Fruchard, Nicolas. "L'allumage dans les moteurs à essence. Une modélisation et des applications." Rouen, 1995. http://www.theses.fr/1995ROUES053.

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Ce travail présente un modèle d'allumage d'un milieu turbulent dans lequel le carburant et l'air sont préalablement parfaitement mélangés. Les conditions initiales retenues sont proches de celles rencontrées dans les moteurs à allumage commandé. Le temps caractéristique de la turbulence et la durée de l'allumage ainsi que l'échelle de la turbulence et l'espace entre les électrodes sont sensiblement du même ordre de grandeur. Il y aura alors de fortes interactions entre la turbulence, la chimie et l'apport d'énergie. Elles seront étudiées par une approche basée sur les fonctions de densité de p
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45

Villalva, Sergio Gradella 1985. "Análise de virabrequins automotivos utilizando modelos analíticos e flexíveis." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263496.

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Orientador: Marco Lúcio Bittencourt<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-24T08:50:44Z (GMT). No. of bitstreams: 1 Villalva_SergioGradella_M.pdf: 11688581 bytes, checksum: df8c433816377fee9fe37ecd07dfb3a1 (MD5) Previous issue date: 2014<br>Resumo: O virabrequim é um dos componentes mais importantes de um motor de combustão interna. É responsável, juntamente com as bielas, por transformar o movimento de translação dos pistões em movimento rotativo, capaz de transmitir torque. Durante o funcionamen
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46

Godswill, Uchechukwu Megwai. "Process Simulations of Small Scale Biomass Power Plant." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17969.

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Power generation from biomass based renewable energy technologies is a promising option in retrofitting our dependence in conventional power generation processes. The development of any society is not possible without sustainable energy and access to energy creates that environment that allows the world to thrive. Electricity access especially in developing regions of the world is of particular interest. This work provides results on electricity efficiency, the economic feasibility and environmental impact of biomass based power technologies in small scale setting using Aspen Plus software. Th
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47

Andreoli, Alexandre Giordani. "Análise e simulação de mapas base de injeção eletrônica de combustível para motores de ignição a centelha." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/75756.

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Uma nova metodologia para a criação de mapas base de injeção eletrônica de combustível para motores de combustão interna de ignição a centelha é apresentada e seu comportamento é comparado com os resultados fornecidos pela metodologia MVEM. A partir da utilização de equacionamentos da literatura, é feita uma modelagem do ciclo ideal Otto para um motor genérico alternativo monocilíndrico de 500 cm³ de volume deslocado. É modelada também uma válvula do tipo borboleta genérica de 0,06 m³ de diâmetro que opera tanto em regime subsônico quanto sônico. A pressão à jusante da borboleta é calculada pa
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48

Auñón, García Ángel. "Development and validation of a virtual engine model for simulating standard testing cycles." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/168906.

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[ES] Las nuevas regulaciones en materia de emisiones de efecto invernadero y calidad del aire han conducido la evolución tecnológica de los motores de combustión interna durante los últimos años. Las mejoras en el proceso de la combustión, la sobrealimentación, la gestión térmica, los sistemas de post tratamiento y técnicas como la recirculación de gases de escape, han permitido que los motores de combustión interna de hoy en día sean cada vez más limpios. La adopción en Europa del nuevo ciclo de homologación WLTP, que considera un ciclo de conducción más realista que su predecesor el NEDC, as
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49

Flores, Arteaga Johnathan Anthony. "Análise energética e exergética de um sistema de cogeração com motores de combustão interna." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265454.

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Orientadores: Denilson Boschiero do Espirito Santo, Jorge Isaias Llagostera Beltran<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-16T21:06:23Z (GMT). No. of bitstreams: 1 FloresArteaga_JohnathanAnthony_M.pdf: 7822119 bytes, checksum: 01186d0adc1c930e06ebf80d8d39fb47 (MD5) Previous issue date: 2010<br>Resumo: Dentre as alternativas de geração de energia, os sistemas de cogeração provaram ser uma boa opção para a produção de energia distribuída em locais de carga elétrica e térmica coincide
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50

Wang, Yue. "Numerical Studies of Flow and AssociatedLosses in the Exhaust Port of a Diesel Engine." Doctoral thesis, KTH, Mekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-134844.

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In the last decades, the focus of internal combustion engine development has moved towards more efficient and less pollutant engines. In a Diesel engine, approximately 30-40% of the energy provided by combustion is lost through the exhaust gases. The exhaust gases are hot and therefore rich of energy. Some of this energy can be recovered by recycling the exhaust gases into turbocharger. However, the energy losses in the exhaust port are highly undesired and the mechanisms driving the total pressure losses in the exhaust manifold not fully understood. Moreover, the efficiency of the turbine is
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