Relevant bibliographies by topics / Combustions / Dissertations / Theses
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Dissertations / Theses on the topic 'Combustions'

Author: Grafiati
Published: 1 June 2024
Last updated: 31 July 2025

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1

Guionnet, Claude. "Les combustions humaines spontanées." Paris 5, 1988. http://www.theses.fr/1988PA05H035.

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Quelques cendres grasses et fetides que l'on decouvrait au matin. Que l'on y voit tout a tour, le juste chatiment de la pecheresse, le en une debauche d'explications plus ou moins rationnelles, on fait dictees necessaire expiation et ne pouvaient accepter le caractere post-morten du
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2

Guionnet, Claude. "Les Combustions humaines spontanées." Lille 3 : ANRT, 1989. http://catalogue.bnf.fr/ark:/12148/cb37614147g.

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3

Yao, Wei. "Soot modeling in laminar and turbulent combustions." Thesis, University of Ulster, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520546.

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4

Silvagni, Giacomo <1992&gt. "Development of Advanced Combustions using Cylinder Pressure Signal." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10275/1/XXXIV_SILVAGNI_PhDThesis_def.pdf.

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Zero-carbon powertrains development has become one of the main challenges for automotive industries around the world. Following this guideline, several approaches such as powertrain electrification, advanced combustions, and hydrogen internal combustion engines have been aimed to achieve the goal. Low Temperature Combustions, characterized by a simultaneous reduction of fuel consumption and emissions, represent one of the most studied solutions moving towards a sustainable mobility. Previous research demonstrate that Gasoline partially premixed Compression Ignition combustion is one of the m
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5

Hilbert, Renan. "Etude de la combustion turbulente non prémélangée et partiellement prémélangée par simulations numériques directes." Châtenay-Malabry, Ecole centrale de Paris, 2002. http://www.theses.fr/2002ECAP0856.

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Ce travail présente l’étude de flammes turbulentes non-prémélangées et partiellement prémélangées par simulations numériques directes (DNS) en utilisant des modèles détaillés de chimie de transport. L’interaction entre une flamme H2/Air et un champ de turbulence est simulée et l’influence de la diffusion différentielle sur la structure de la flamme est qualifiée. On note en particulier l’absence de corrélation entre la température de flamme et le taux de dissipation scalaire quand un modèle de transport élaboré est utilisé, ainsi qu’une modification de la limite d’équilibre. Le ré-établissemen
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6

Lecocq, Guillaume. "Approches hybrides combinant chimie complexe, description statistique et densité de surface de flamme pour la simulation aux grandes échelles de l'auto-inflammation, l'allumage par bougie et la flamme de prémélange dans les moteurs à allumage commandé." Phd thesis, INSA de Rouen, 2010. http://tel.archives-ouvertes.fr/tel-00561996.

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Cette thèse propose une modélisation aussi générique que possible de la combustion dans les moteurs automobiles dans un cadre de simulation aux grandes échelles. Une première étude aborde la fermeture du terme de transport non résolu pour la flamme de prémélange. Par la suite, un couplage entre les modèles ecfm-les et pcm-fpi est proposé et validé pour intégrer les effets de chimie complexe à la simulation de la flamme de prémélange. Ce travail est étendu par l'adjonction de modélisations spécifiques à l'allumage par bougie et de l'auto-inflammation, toujours en intégrant les effets de chimie
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7

Robert, Anthony. "Simulation aux Grandes Échelles des combustions anormales dans les moteurs downsizés à allumage commandé." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/16783/1/ROBERT_Anthony.pdf.

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Le moteur à allumage commandé fortement downsizé est une des solutions les plus prometteuses utilisée par les constructeurs automobiles pour augmenter le rendement et réduire les émissions de CO2. Cependant, les conditions thermodynamiques plus sévères rencontrées dans ces moteurs favorisent l’apparition de combustions anormales (cliquetis et rumble) qui sont difficiles à analyser expérimentalement vu les risques encourus par le moteur. La méthode Reynolds Averaged Navier-Stokes (RANS) s’est imposée depuis plusieurs années pour l’étude des moteurs à piston dans l’industrie, mais elle n’est pas
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8

BRESSON, Alexandre. "Techniques d'imagerie quantitatives : fluorescence induite par laser appliquée aux écoulements et aux combustions." Phd thesis, Université de Rouen, 2000. http://tel.archives-ouvertes.fr/tel-00010884.

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Les techniques de mesures optiques non intrusives développées depuis plusieurs dizaines d'années permettent la mesure des paramètres physiques tels que la température, la concentration des espèces chimiques et la vitesse. Tous ces diagnostics optiques, bien que très performants, sont généralement appliqués en mesures ponctuelles.<br />Le but de la thèse est de développer une ou plusieurs techniques d'imagerie quantitatives et instantanées de température et de concentration. Deux axes d'études complémentaires ont été abordés au cours de ce travail. Il s'agit de la fluorescence induite par laser
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9

Bresson, Alexandre. "Techniques d'imagerie quantitatives : fluorescence induite par laser appliquée aux écoulements et aux combustions." Rouen, 2000. http://www.theses.fr/2000ROUES065.

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Les techniques de mesures optiques non intrusives développées depuis plusieurs dizaines d'années permettent la mesure des paramètres physiques tels que la température, la concentration des espèces chimiques et la vitesse. Tous ces diagnostics optiques, bien que très performants, sont généralement appliqués en mesures ponctuelles. Le but de la thèse est de développer une ou plusieurs techniques d'imagerie quantitatives et instantanées de température et de concentration. Deux axes d'études complémentaires ont été abordés au cours de ce travail. Il s'agit de la fluorescence induite par laser sur
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10

Misdariis, Antony. "Schémas cinétiques réduits et couplage thermique pour les simulations aux grandes échelles du cliquetis dans les moteurs à piston." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/14269/1/misdariis_partie_1_sur_3.pdf.

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Pour améliorer le rendement des moteurs essence, une méthode efficace est le downsizing qui consiste en la diminution de la cylindrée moteur compensée par l’ajout d’un compresseur pour maintenir la puissance. Lorsque le niveau de downsizing est trop important les fortes pression et températures rencontrées favorisent l’apparition de phénomènes d’auto-allumage de type cliquetis ou rumble néfastes pour l’intégrité du moteur. Ce type de phénomène, aujourd’hui encore mal compris, constitue une limite à l’utilisation du downsizing. Dans cette thèse la Simulation aux Grandes Echelles est utilisée po
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11

Brocard, Delphine. "Emissions atmosphériques des combustions domestiques : étude des processus et détermination des sources à l'échelle régionale et globale en Afrique." Toulouse 3, 1996. http://www.theses.fr/1996TOU30296.

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Les feux de savanes et les combustions domestiques sont les principales sources de polluants atmospheriques en afrique. Afin de connaitre leur impact sur la chimie de l'atmosphere a l'echelle globale et regionale, il est necessaire d'estimer leurs emissions a ces differentes echelles. Pour cela, il faut determiner les quantites de biomasse brulees en fonction du temps et de l'espace et les caracteristiques de l'emission du compose atmospherique etudie, c'est a dire, la quantite de compose emis par unite de biomasse brule ou facteur d'emission. Ce travail propose la premiere quantification a l'
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12

Zaccardi, Jean-Marc. "Contribution à la compréhension des combustions anormales dans les moteurs à allumage commandé : caractérisation et analyse phénoménologique du pré allumage à forte charge." Thesis, Lyon, INSA, 2012. http://www.theses.fr/2012ISAL0019.

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L'augmentation continue des charges de fonctionnement des moteurs à allumage commandé a conduit à l'apparition d'une nouvelle forme de combustion anormale à bas régime sous la forme d'un pré allumage. Dans des conditions de pression et de température extrêmes, une auto-inflammation incontrôlée du mélange carburé peut en effet se produire avant l'allumage normal à la bougie et conduire à une seconde auto-inflammation de type cliquetis donnant naissance à des oscillations de pression inacceptables même pour les moteurs les plus robustes. Cette anomalie constitue donc une véritable limite au down
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13

Gonze, Marie-Laure. "Etude théorique et expérimentale par diffusion Raman stimulée des élargissements collisionnés des mélanges N2-Co2 et N2-H2o intervenant dans les combustions." Dijon, 1989. http://www.theses.fr/1989DIJOS013.

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Etude des effets de collision de CO2 et H2Osur les raies Q du spectre rovibrationnel de N2 à partir des largeurs et déplacements de raies mesures a l'aide d'un spectromètre Raman inverse et d'un lambdamètre (précision de quelques mhz). Mesure des coefficients d'élargissement à faible densité pour déduire les paramètres ajustables de trois modèles de relaxation rotationnelle de N2. Simulation des spectres N2-CO2 à haute densité et comparaison aux données expérimentales pour diviser la meilleure modélisation en vue de l'extrapolation à des températures et densités plus élevées
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14

Rouvière, Aurélie. "Impact des combustions du bois de chauffage sur les atmosphères extérieures et intérieures : étude de la dégradation d'un traceur spécifique en enceinte de simulation : le créosol." Université Joseph Fourier (Grenoble), 2006. http://www.theses.fr/2006GRE10185.

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L'atmosphère terrestre est un milieu très complexe, perpétuellement en interaction, dont sa composition est fortement influencée par les activités humaines qui émettent de nombreux composés. Peu d'études liées aux émissions de composés organiques volatils (COV) en air intérieur à partir des sources de combustion (différents modes de chauffage, cuisine,. . . ) ont été conduites à ce jour. En effet, l'utilisation de cheminées ne peut que s'accentuer ces prochaines années compte tenu de l'augmentation importante du coût du pétrole et de la valorisation du bois en tant que source alternative. Une
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15

Sood, Kanika. "Combustion des nouveaux biocarburants : étude de la formation des Hydrocarbures Aromatiques Polycycliques Oxygénés (HAPOs) et les petites particules de suie (<10 nm)." Electronic Thesis or Diss., Université de Lille (2022-....), 2023. https://pepite-depot.univ-lille.fr/ToutIDP/EDSMRE/2023/2023ULILR088.pdf.

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Les biocarburants et autres produits chimiques dérivés de la biomasse sont désormais considérés comme un élément essentiel du portefeuille énergétique durable, où ils promettent de contribuer à la sécurité énergétique de notre société. Malgré l'intérêt indéniable que présentent ces biocarburants, leurs processus de combustion sont susceptibles de favoriser la formation d'HAPOs (Hydrocarbures Aromatiques Polycycliques Oxygénés) qui peuvent à terme contribuer à la formation de suie, et peuvent également en modifier profondément les propriétés. Le travail réalisé dans cette thèse a porté sur l'id
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16

Jérisian, Robert. "Comportement de frittés et de films d'oxyde de titane en présence de mélanges gazeux CO-CO2-O2-Ar hors équilibre thermodynamique : mise au point de capteurs résistifs pour la régulation de combustions." Tours, 1990. http://www.theses.fr/1990TOUR4003.

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Des capteurs en TiO2, sous forme de céramique, de couche épaisse obtenue par sérigraphie et de couche mince obtenue par pulvérisation cathodique, ont été étudiés sous l'action de flux gazeux en CO-CO2-O2-Ar hors équilibre thermodynamique. En régime stationnaire sous atmosphère oxydante autour de 600oc la résistance des capteurs suit la loi Po2 ½ P0,5/pco0,5 et autour de 830 oc la loi Po2 ½ Pc0 1/2 5. Sous atmosphère réductrice, dans l'intervalle de 600 à 830 oc, la réponse des échantillons massifs suit la loi (p c o 2/ p c o) 0,5 et celle des couches la loi fp o 2 0, 5 avec f fonction du taux
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17

Battistini, Davide. "Soluzioni per il futuro dei motori a combustione interna: opposed piston engine e split cycle combustion engine." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/22080/.

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In questo lavoro di tesi mi soffermerò, inizialmente, sul possibile futuro dei motori a combustione interna e sulle tecnologie innovative già presenti sul mercato (HCCI, VCR, ecc.). Mi concentrerò, poi, sull’analisi di due sistemi innovativi come gli Opposed Piston Engine (OPE) e gli Split Cycle Combustion Engine (SCCE).
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18

Bishop, Robert Phelps. "Combustion efficiency in internal combustion engines." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15164.

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Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING<br>Bibliography: leaf 26.<br>by Robert Phelps Bishop.<br>B.S.
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19

Šaroun, Josef. "Projektové řízení výstavby technologického celku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230034.

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The target of this master thesis is specify the requirements, which come up while summing the investment aim of a new 40MW energetic unit, and show the overall project management. Thesis is divided into two parts. First part deals with project management from the investors point of view. There is also detailed concept study, technological description of piston co-generation units and combined cycle, concept design of calculated variations and their economical analysis. Second part is taken from the point of view of the main supplier. There is defined the range of operations, documents and offi
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20

Metzger, Brian. "Glycerol Combustion." NCSU, 2007. http://www.lib.ncsu.edu/theses/available/etd-07312007-153859/.

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As worldwide production of biodiesel fuel increases, one of the largest concerns is the abundance of waste glycerol. The price of crude glycerol has fallen drastically and many large biodiesel producers are currently paying to landfill this large waste stream. In the search to find a value added alternative, glycerol combustion may be one of the simplest solutions. Heat recovered from glycerol oxidation could easily be used to reduce heating costs inherent to large-scale biodiesel production. It has been stated ?Combustion of glycerol would be an elegant solution, if it worked?. Clean combusti
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21

Michalski, Quentin. "Étude expérimentale de la combustion à volume constant pour la propulsion aérobie : influence de l'aérodynamique et de la dilution sur l'allumage et la combustion." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2019. http://www.theses.fr/2019ESMA0009/document.

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Les turbomachines actuelles ont atteint un niveau de maturité technique très élevé. De nouvelles architectures reposant sur des cycles thermodynamiques basés sur une combustion à gain de pression, comme la combustion à volume constant (CVC), ont le potentiel d’augmenter leur efficacité. Dans cette étude,une solution qui repose sur l’intégration dans une turbomachine de chambres de combustion à volume constant sans piston (CVCSP) est considérée. Les objectifs de ces travaux de thèse sont doubles : dans un premier temps de développer et de caractériser extensivement un nouveau dispositif (CV2) d
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22

Lago, Sari Rafael. "Dual Mode Dual Fuel Combustion: Implementation on a Real Medium Duty Engine Platform." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/165366.

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[ES] Históricamente, el sector del transporte de servicio mediano y pesado ha sido desafiado por las regulaciones de emisiones que se han impuesto a lo largo de los años, lo que requirió intensificar el esfuerzo de investigación con el objetivo de avanzar en el desarrollo tecnológico para ofrecer una opción que cumpla con las normas a un precio similar para el propietario. No obstante, la reciente introducción de la normativa EUVI ha requerido la adición de un complejo sistema de postratamiento, agregando nuevos costes fijos al producto, así como costes operativos con el consumo de urea. Este
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23

Hillion, Mathieu. "Contrôle de combustion en transitoires des moteurs à combustion interne." Phd thesis, École Nationale Supérieure des Mines de Paris, 2009. http://pastel.archives-ouvertes.fr/pastel-00005749.

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Cette thèse traite le problème du contrôle de combustion des moteurs automobiles à combustion interne. On propose une méthode complétant les stratégies de contrôle existantes reposant sur des cartographies calibrées en régime stabilisé. Pendant les transitoires, cette méthode de contrôle utilise des variations de la variable rapide (moment d'allumage ou d'injection) pour compenser les déviations des conditions initiales des variables thermodynamiques dans les cylindres (variables lentes) par rapport à leurs valeurs optimales. Les corrections sont calculées grâce à une analyse de sensibilité d'
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24

Ghorbali, Ali. "Cyclic variation in combustion in a constant volume combustion chamber." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6757.

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Cycle to cycle variations in combustion and turbulence characteristics in a swirling flow were measured in a cylindrical vessel. The vessel was charged by rapid tangential injection using a shrouded valve for two valve lifts (7 mm and 12 mm). A premixed lean mixture of propane and air ($\phi$ = 0.8) was ignited at quarter radius from the center. Pressure rise as a function of time was measured using a pressure transducer. Mean flow, turbulence intensity and Taylor microscale were estimated by statistical analysis of a single hot wire anemometer signal using ensemble averaging and cyclic analys
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25

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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26

Heising, Raymond. "Effectiveness of pulsed spray combustion for suppression of combustion instabilities." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/16682.

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27

Shah, Priti. "Mathematical modelling of flow and combustion in internal combustion engines." Thesis, University of Greenwich, 1989. http://gala.gre.ac.uk/8703/.

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The research work reported herein addresses the problem of mathematical modelling of fluid flow and combustion in internal combustion engines. In particular, the investigation of three topics that constitute prime sources of uncertainty, in current numerical models, namely turbulence modelling, inaccuracies in the solution procedure specific to moving grids, and combustion modelling. Two and three-dimensional computations of the in-cylinder turbulent flow in a diesel engine are described first, with emphasis on the modifications made to the standard k- model of turbulence to account for rapid
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Alganash, Blaid Sasi Abozeid. "Numerical investigation of the combustion processes of various combustion regimes." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/7124/.

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This thesis concerns numerical investigations of the combustion behaviour of various combustion regimes. The simulations are based on modelling the flow of the fuels in the combustion devices. Computational fluid dynamics (CFD) modelling and analysis were used in three different works. FLUENT software, which is based on the finite volume method, is used to carry out all the simulations. Firstly, numerical simulations were carried out to investigate the turbulent non-premixed combustion of a mixture of methane (CH4) 90% and nitrogen (N2) 10%, on volume basis, inside an axis-symmetric cylindrica
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Du, Jianyi. "Combustion CFD simulation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0018/NQ56437.pdf.

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30

Strand, Carina Renée. "Catalytic combustion control." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for kjemi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21120.

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A mathematical model representing the dynamic behaviour observed at the actual catalytic incineration plant at Perstorp was derived. The model equations for the two main process units, the heat exchanger and the incinerator, were based on the lumped systems approach in order to avoid using partial differential equations. The model was written in Matlab and implemented in Simulink using s-functions for the dynamic study. By analyzing the dynamic data from the actual plant, it was discovered that the possible source of the ocassional large temperature variations in the incinerator is the periodi
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31

Martin, Kendrick. "Switchgrass combustion studies." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29537.

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This thesis presents fundamental research about the combustion gas products and solid phase residue of switch grass combustion. To identify the compounds released during the combustion phase, tests were conducted using a Thermogravimetric Analyzer (TGA) coupled to a Fourier Transform Infrared Spectrometer. These test revealed that aromatic compounds as well as carbon dioxide and water were released.<br>High Pressure Liquid Chromatography (HPLC) and GCMS/GCFID were also used to identify and semi-quantify polycyclic aromatic hydrocarbons (PAH) and benzene derivatives. From these analyses it was
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Cairns, Malcolm. "Titanium particle combustion." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86572.

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In order to increase the validity of numerical models of the detonation of heterogeneous titanium explosives, experimental results are needed. The combustino of titanium is studied using two experimental techniques. The first technique is the study of the burn time for a single particle over a wide range of initial diameters while altering the oxygen concentration. To accomplish this a new flat flame burner to study particle burn time has been designed. Luminous tracks caused by the light emitted by the combustion of the particles are analyzed and burn time is inferred. Burn time in air and in
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Bhidayasiri, Roongrueng. "Control of combustion." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286243.

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Williams, R. "Submerged flame combustion." Thesis, Swansea University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636655.

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The objective of this work is to better understand the operation of Submerged Flame Burners, commonly known as Submerged Combustion Burners. Two main aspects require consideration, namely: practical applications of the technology in industry; secondly, theoretical modelling of the flame behaviour within the Submerged Combustion Burner in order to ensure flame stability in the burner and hence heat transfer efficiency and reliable operation. The current status of the Submerged Combustion Technology has been reviewed, detailing the separation equipment items that, overall, make up an industrial
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Pearce, Steven Mitchell. "Hydrogen enhanced combustion." Thesis, University of Canterbury. Mechanical Engineering, 2000. http://hdl.handle.net/10092/6047.

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Current four stroke engine research objectives focus on increasing part load thermal efficiency while reducing exhaust emissions. Methods currently employed to achieve this are homogeneous charge lean burn technology, stratified charge lean burn technology and the use of alternative fuels. Of all possible alternative fuels hydrogen is viewed by many as being, ultimately, the fuel of the future. Methanol is regarded as being a likely transitional fuel between the current petroleum transport fuels and hydrogen. Hydrogen is known to be effective in extending the operating lean limit of an engine
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Xu, Min. "Chemical looping combustion : cold model hydrodynamics and modeling of methane combustion." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/27743.

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A novel interconnected fluidized bed (IFB) reactor with a bypass line for chemical looping combustion (CLC) has been developed to overcome the problem of short residence time of oxygen carrier in the air reactor. A comprehensive hydrodynamic study was carried out on the cold-flow model of the proposed reactor. Detailed mapping of the operating conditions for the reactor system was studied. Pressure transducers were applied to investigate the pressure loops and the cross-sectional average solids hold-up along the air reactor. Solids circulation flux between the two reactors was measured usi
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Forsberg, Peter. "Combustion Valve Wear : A Tribological Study of Combustion Valve Sealing Interfaces." Doctoral thesis, Uppsala universitet, Tillämpad materialvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-204636.

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The exhaust valve system of combustion engines experiences a very complex contact situation of frequent impact involving micro sliding, high and varying temperatures, complex exhaust gas chemistry and possible particulates, etc. In addition, the tribological situation in the exhaust valve system is expected to become even worse due to strict future emission regulations, which will require enhanced combustion and cleaner fuels. This will substantially reduce the formation of combustion products that might ease the contact conditions by forming tribofilms on the contacting surfaces. The lack of
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Farrow, Timipere Salome. "A fundamental study of biomass oxy-fuel combustion and co-combustion." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/27633/.

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While oxy-fuel combustion research is developing and large scale projects are proceeding, little information is available on oxy-biomass combustion and cocombustion with coal. To address this knowledge gap, this research conducted has involved comprehensive laboratory based fundamental investigation of biomass firing and co-firing under oxy-fuel conditions and compared it to conventional air firing conditions. First, TGA was employed to understand the fundamental behaviour of biomass devolatilisation, char combustion and nitrogen partitioning between volatiles and residual char. The results re
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Horning, Marcus. "Feedback Control for Maximizing Combustion Efficiency of a Combustion Burner System." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1459356183.

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40

De, Lima Moradell Daniela Andreina. "Analysis of combustion concepts in a poppet valve two-stroke downsized compression ignition engine designed for passenger car applications." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/68502.

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[EN] The research work presented on this thesis has been performed in the framework of the development and optimization of the combustion system of a novel two-stroke CI engine, with a scavenging configuration through poppet-valves, which has been specifically designed for a light-duty vehicle application. The main objective of this investigation is to improve the existing understanding about two-stroke poppet-valves engines, and assess the main relationships between the gas exchange and combustion processes in this type of architecture, with the aim of evaluating their impact on the exhaust e
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41

Fabbri, Federico. "Controllo multiparametro della combustione." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5121/.

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42

Tongroon, Manida. "Combustion characteristics and in-cylinder process of CAI combustion with alcohol fuels." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4501.

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Controlled auto-ignition (CAI) combustion in the gasoline engine has been extensively studied in the last several years due to its potential for simultaneous improvement in fuel consumption and exhaust emissions. At the same time, there has been increasing interest in the use of alternative fuels in order to reduce reliance on conventional fossil fuels. Therefore, this study has been carried out to investigate the effect of alcohol fuels on the combustion characteristics and in-cylinder processes of CAI combustion in a single cylinder gasoline engine. In order to study the effect of alcohol fu
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43

Chung, Nguyen Thai. "Pre-integrated non-equilibrium combustion-response mapping for internal combustion engine emissions." Thesis, University of Glasgow, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412952.

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44

Turner, Dale Michael. "The combustion and emissions performance of fuel blends in modern combustion systems." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/1165/.

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The combustion and emissions performance of fuel blends in modern combustion systems has been investigated with the intention of reducing emissions, improving efficiency and assessing the suitability of future automotive fuels. The combustion systems used in this study include Homogeneous Charge Compression Ignition (HCCI) and Direct Injection Spark Ignition (DISI). By adding a small quantity (10%) of diesel to gasoline, the HCCI combustion of this ‗Dieseline‘ mixture shows a 4% increase in the maximum and a 16% reduction in the minimum loads (IMEP) achievable. The NOX emissions are reduced, w
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Milovanović, Nebojša. "A study of controlled auto ignition (CAI) combustion in internal combustion engines." Thesis, Loughborough University, 2003. https://dspace.lboro.ac.uk/2134/19906.

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Controlled Auto Ignition (CAI) combustion is a new combustion principle in internal combustion engines which has in recent years attracted increased attention. In CAI combustion, which combines features of spark ignition (SI) and compression ignition (CI) principles, air/fuel mixture is premixed, as in SI combustion and auto-ignited by piston compression as in CI combustion. Ignition is provided in multiple points, and thus the charge gives a simultaneous energy release. This results in uniform and simultaneous auto-ignition and chemical reaction throughout the whole charge without flame propa
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46

Ranasinghe, D. J. "Modelling partially premixed turbulent combustion in a spark ignited internal combustion engine." Thesis, University of Cambridge, 2000. https://www.repository.cam.ac.uk/handle/1810/272095.

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47

Garba, Mohammed Umar. "Prediction of ash deposition for biomass combustion and coal/biomass co-combustion." Thesis, University of Leeds, 2012. http://etheses.whiterose.ac.uk/4373/.

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In this thesis, a model that couples a reduced alkali kinetic mechanism for alkali sulphate formation during biomass combustion with an ash deposition model using computational fluid dynamics (CFD) techniques has been presented. Starting with a detailed gas-phase kinetic mechanism for the alkali chemistry, a systematic reduction procedure has been performed using a sensitivity analysis to reduce the reaction mechanism to a level that can be implemented into a CFD calculation. An ash deposition model that takes into consideration the ash-sticking probability and the condensation of potassium sa
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Shin, Dong-hyuk. "Premixed flame kinematics in a harmonically oscillating velocity field." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45950.

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Air pollution regulations have driven modern power generation systems to move from diffusion to premixed combustion. However, these premixed combustion systems are prone to combustion instability, causing high fluctuations in pressure and temperature. This results in shortening of component life, system failure, or even catastrophic disasters. A large number of studies have been performed to understand and quantify the onset of combustion instability and the limit cycle amplitude. However, much work remains due to the complexity of the process associated with flow dynamics and chemistry. This
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Lee, Jae-Yeon. "Fast and slow active control of combustion instabilities in liquid-fueled combustors." Diss., Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04072004-180036/unrestricted/lee%5fjae-yeon%5f200312%5fphd.pdf.

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50

Thevenin, Philippe. "Catalytic combustion of methane." Doctoral thesis, KTH, Chemical Engineering and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3402.

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<p>Catalytic combustion is an environmentally benign technologywhich has recently reached the stage of commercialization.Palladium is the catalyst of choice when considering gasturbines fuelled with natural gas because of its superioractivity for methane oxidation. Several fundamental issues arestill open and their understanding would result in animprovement of the technology. Hence, the work presented inthis thesis aims at the identification of some of theparameters which govern the combustion activity ofpalladium-based catalysts.</p><p>The first part of this work gives a background to cataly
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