Bibliografías temáticas / Homogeneous combustion

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Literatura académica sobre el tema "Homogeneous combustion"

Autor: Grafiati

Publicado: 6 de septiembre de 2023

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Artículos de revistas sobre el tema "Homogeneous combustion"

Yang, Xiaojian y Guoming G. Zhu. "A control-oriented hybrid combustion model of a homogeneous charge compression ignition capable spark ignition engine". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 226, n.º 10 (31 de mayo de 2012): 1380–95. http://dx.doi.org/10.1177/0954407012443334.

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To implement the homogeneous charge compression ignition combustion mode in a spark ignition engine, it is necessary to have smooth mode transition between the spark ignition and homogeneous charge compression ignition combustions. The spark ignition–homogeneous charge compression ignition hybrid combustion mode modeled in this paper describes the combustion mode that starts with the spark ignition combustion and ends with the homogeneous charge compression ignition combustion. The main motivation of studying the hybrid combustion mode is that the percentage of the homogeneous charge compression ignition combustion is a good parameter for combustion mode transition control when the hybrid combustion mode is used during the transition. This paper presents a control oriented model of the spark ignition–homogeneous charge compression ignition hybrid combustion mode, where the spark ignition combustion phase is modeled under the two-zone assumption and the homogeneous charge compression ignition combustion phase under the one-zone assumption. Note that the spark ignition and homogeneous charge compression ignition combustions are special cases in this combustion model. The developed model is capable of simulating engine combustion over the entire operating range, and it was implemented in a real-time hardware-in-the-loop simulation environment. The simulation results were compared with those of the corresponding GT-Power model, and good correlations were found for both spark ignition and homogeneous charge compression ignition combustions.

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Rether, Dominik, Michael Grill y Michael Bargende. "HC1-1 Quasi-Dimensional Modeling of Partly Homogeneous and Homogeneous Diesel Combustion(HC: HCCI Combustion,General Session Papers)". Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2012.8 (2012): 386–91. http://dx.doi.org/10.1299/jmsesdm.2012.8.386.

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Tanaka, Tatsuya, Kazuaki Narahara, Michihiko Tabata, Sadami Yoshiyama y Eiji Tomita. "Measurement of ion current in homogeneous charge compression ignition combustion(HCCI, Combustion Processes II)". Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2004.6 (2004): 319–25. http://dx.doi.org/10.1299/jmsesdm.2004.6.319.

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Di Sarli, Valeria. "Stability and Emissions of a Lean Pre-Mixed Combustor with Rich Catalytic/Lean-burn Pilot". International Journal of Chemical Reactor Engineering 12, n.º 1 (1 de enero de 2014): 77–89. http://dx.doi.org/10.1515/ijcre-2013-0112.

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Abstract In this work, a reactor network model was developed to study homogeneous gas-phase methane combustion taking place under typical operating conditions of lean pre-mixed combustors piloted by rich catalytic/lean-burn (RCL) systems. In particular, the thermo-kinetic interaction between the pilot stream (i.e. the stream exiting the RCL stage) and the main feeding stream to the homogeneous reactor was investigated in terms of combustion stability and emissions. The homogeneous combustor was modeled as a perfectly stirred reactor (PSR). The pilot stream was mixed with the main feeding stream prior to entering the PSR. Numerical results have shown that the opportunity to stabilize combustion is strongly linked to the presence of hydrogen in the pilot stream. Combustion stability is highly sensitive to variations in fuel split between catalytic pilot and homogeneous reactor. The increase in pilot fuel split (and, thus, in the inlet hydrogen concentration to the PSR) enlarges the operating window of stable combustion (in terms of higher heat losses, lower preheat temperatures and lower residence times), while still achieving NOx and CO emissions lower than 9 ppm (at 15% O2). These results highlight the potential of the RCL technology as a valuable alternative to conventional diffusion flame-based pilots.

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Weclas, Miroslaw. "Potential of Porous-Media Combustion Technology as Applied to Internal Combustion Engines". Journal of Thermodynamics 2010 (21 de febrero de 2010): 1–39. http://dx.doi.org/10.1155/2010/789262.

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The paper summarizes the knowledge concerning porous media combustion techniques as applied in engines. One of most important reasons of this review is to introduce this still not well known technology to researchers doing with internal combustion engine processes, thermal engines, reactor thermodynamics, combustion, and material science. The paper gives an overview of possible applications of a highly porous open cell structures to in-cylinder processes. This application means utilization of unique features of porous media for supporting engine processes, especially fuel distribution in space, vaporization, mixing with air, heat recuperation, ignition and combustion. There are three ways for applying porous medium technology to engines: support of individual processes, support of homogeneous combustion process (catalytic and non-catalytic) with temperature control, and utilization of the porous structure as a heat capacitor only. In the first type of application, the porous structure may be utilized for fuel vaporization and improved fuel distribution in space making the mixture more homogeneous in the combustion chamber. Extension of these processes to mixture formation and ignition inside a combustion reactor allows the realization of a homogeneous and a nearly zero emissions level combustion characterized by a homogeneous temperature field at reduced temperature level.

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Kannan, Chidambaram y Thulasi Vijayakumar. "Influence of Exhaust Gas Recirculation, and Injection Timing on the Combustion, Performance and Emission Characteristics of a Cylinder Head Porous Medium Engine". Journal of Thermodynamics 2015 (12 de octubre de 2015): 1–10. http://dx.doi.org/10.1155/2015/927896.

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Homogeneous combustion has the potential of achieving both near-zero emissions and low specific fuel consumption. However, the accomplishment of homogeneous combustion depends on the air flow structure inside the combustion chamber, fuel injection conditions, and turbulence as well as ignition conditions. Various methods and procedures are being adopted to establish the homogeneous combustion inside the engine cylinder. In this research work, a highly porous ceramic structure was introduced into the combustion chamber (underside of the cylinder head). The influence of operating parameters such as exhaust gas recirculation (EGR) and injection timing on the combustion, performance, and emission characteristics of such developed engine was investigated in this research work.

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Chidambaram, Kannan y Tamilporai Packirisamy. "Smart ceramic materials for homogeneous combustion in internal combustion engines: A review". Thermal Science 13, n.º 3 (2009): 153–63. http://dx.doi.org/10.2298/tsci0903153c.

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The advantages of using ceramics in advanced heat engines include increased fuel efficiency due to higher engine operating temperatures, more compact designs with lower capacity cooling system. Future internal combustion engines will be characterized by near zero emission level along with low specific fuel consumption. Homogenous combustion which realized inside the engine cylinder has the potential of providing near zero emission level with better fuel economy. However, the accomplishment of homogeneous combustion depends on the air flow structure inside the combustion chamber, fuel injection conditions and turbulence as well as ignition conditions. Various methods and procedures are being adopted to establish the homogeneous combustion inside the engine cylinder. In recent days, porous ceramic materials are being introduced inside the combustion chamber to achieve the homogeneous combustion. This paper investigates the desirable structures, types, and properties of such porous ceramic materials and their positive influence on the combustion process.

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Schroeder, T. B. y M. Quinn Brewster. "UNSTEADY COMBUSTION OF HOMOGENEOUS ENERGETIC SOLIDS". International Journal of Energetic Materials and Chemical Propulsion 4, n.º 1-6 (1997): 1082–92. http://dx.doi.org/10.1615/intjenergeticmaterialschemprop..v4.i1-6.1000.

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SON, STEVEN F. y M. QUINN BREWSTER. "RADIATION-AUGMENTED COMBUSTION OF HOMOGENEOUS SOLIDS". Combustion Science and Technology 107, n.º 1-3 (enero de 1995): 127–54. http://dx.doi.org/10.1080/00102209508907798.

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Shingne, Prasad S., Jeff Sterniak, Dennis N. Assanis, Claus Borgnakke y Jason B. Martz. "Thermodynamic model for homogeneous charge compression ignition combustion with recompression valve events and direct injection: Part II—Combustion model and evaluation against transient experiments". International Journal of Engine Research 18, n.º 7 (26 de agosto de 2016): 677–700. http://dx.doi.org/10.1177/1468087416665052.

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This two-part article presents a combustion model for boosted and moderately stratified homogeneous charge compression ignition combustion for use in thermodynamic engine cycle simulations. The model consists of two parts: one an ignition model for the prediction of auto-ignition onset and the other an empirical combustion rate model. This article focuses on the development of the combustion model which is algebraic in form and is based on the key physical variables affecting the combustion process. The model is fit with experimental data collected from 290 discrete automotive homogeneous charge compression ignition operating conditions with moderate stratification resulting from both the direct injection and negative valve overlap valve events. Both the ignition model from part 1 and the combustion model from this article are implemented in GT-Power and validated against experimental homogeneous charge compression ignition data under steady-state and transient conditions. The ignition and combustion model are then exercised to identify the dominant variables affecting the homogeneous charge compression ignition and combustion processes. Sensitivity analysis reveals that ignition timing is primarily a function of the charge temperature, and that combustion duration is largely a function of ignition timing.

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Tesis sobre el tema "Homogeneous combustion"

Manoubi, Maha. "Combustion Characteristics for Non-homogeneous Segregated H2-Air Mixtures". Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32272.

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The work presented in this thesis is an investigation of the dynamics of unconfined hydrogen-air flames in the presence of buoyant effects and the determination of an ignition criterion for flame propagation between adjacent pockets of reactive gas separated by air. The experimental work was conducted using the soap bubble technique and visualized with high speed schlieren or large scale shadowgraph systems. A study was first conducted to determine the most suitable soap solution additive among glycerol, guar and polyethylene oxide for conducting the experiments, isolating guar as the best candidate. The soap solution was then used to study the dynamics of flames in single or multiple soap bubbles filled with reactive mixtures of different compositions. The soap bubble method was also further improved by designing a soap dispenser that can maintain a bubble indefinitely and a method to burst the soap solution prior to an experiment using timed heated wires. In the experiments with single bubbles, it was found that for sufficiently lean hydrogen-air mixtures, buoyancy effects become important at small scales. The critical radius of hemispherical flames that will rise due to buoyancy was measured and estimated using a model comparing the characteristic burning speed and the rise speed of the flame kernel. Excellent agreement was found between the model predictions and the measured critical flame radii. The experiments with multiple bubbles provided the scaling rules for flame transition between neighboring pockets of hemispherical or spherical shape separated by an inert gas. The test results demonstrated that the separation distance between the bubbles is mainly determined by the expansion ratio when the buoyancy effects are negligible, corresponding to near stoichiometric mixtures. For leaner mixtures with stronger buoyant effects, the critical separation distance was no longer governed by the expansion ratio alone, as buoyancy forces render the flame propagation across the inert gas more difficult. Visualization of the ignition dynamics confirmed that buoyancy forces tend to accelerate the first kernel up before ignition of the second kernel can be achieved.

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Kontarakis, George A. "Homogeneous charge compression ignition in four-stroke internal combustion engines". Thesis, University of Cambridge, 2001. https://www.repository.cam.ac.uk/handle/1810/272293.

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CCACYA, ANTHONY OSWALDO ROQUE. "EXPERIMENTAL STUDY OF HOMOGENEOUS MIXTURE COMPRESSION IGNITION IN INTERNAL COMBUSTION ENGINES". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=17159@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Com o intuito de reduzir as emissões e melhorar a combustão em uma maior faixa de rotação e carga de um motor, foi proposto o estudo da combustão por compressão de misturas homogêneas (HCCI), este processo apresenta altas eficiências e baixas emissões, principalmente de NOx e fuligem. Assim, o objetivo do presente trabalho é a determinação das faixas de operação estável em um motor diesel, de alta taxa de compressão (20:1). O combustível utilizado foi gasolina tipo A, tendo em vista a sua grande produção, além das características de auto-ignição. Para atingir o objetivo proposto foram controladas a temperatura de entrada do ar e a quantidade de combustível da mistura, o que foi implementado sem modificação estrutural do motor. Os ensaios foram realizados com uma temperatura de alimentação entre 75 e 95 ºC, com rotação entre 1200 e 2200 RPM. Os valores para o fator lambda variaram, em função de um processo de combustão estável, entre 2 e 4. São apresentados os resultados experimentais obtidos em um dinamômetro de bancada, sobre os quais se fez uma análise do rendimento, para a faixa de melhor estabilidade da combustão. Para a mesma faixa foi realizada uma análise das curvas de pressão x tempo, caracterizando a auto-ignição como função da temperatura do ar e da riqueza da mistura. Os melhores rendimentos encontrados situam-se ao redor de 36,5 %, para uma temperatura de ingresso de 85 °C, para as maiores rotações pesquisadas.
The present study of homogeneous mixture compression ignition (HCCI) was proposed in order to reduce emissions and improve combustion at a higher speed range and load, this process has high efficiency and low emissions mainly NOx and soot. Therefore, the aim of this study was to determine the ranges of stable operation in a diesel engine of high compression ratio (20:1), operating in HCCI. The fuel used was gasoline type A, given its large production, besides the good characteristics of auto-ignition. To achieve this purpose were controlled inlet air temperature and the amount of fuel in the mixture, these were implemented without structural modification of the engine. The tests were conducted with a feed temperature between 75 and 95 ° C, with rotation between 1200 and 2200 RPM. The values for the lambda factor varied between 2 and 4, as a function of a stable combustion process. The experimental results here reported were obtained on a dynamometer bench, on which, it was made a performance analysis for the better stability combustion range. Additionally for this range, an analysis of the curves of pressure vs. time was performed, characterizing the auto-ignition as a function of air temperature and the richness of the mixture. The best results found are located around 36.5% at an intake temperature of 85 ° C for the highest speed studied.

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Gidney, Jeremy. "The performance stability of a homogeneous charge lean-burn spark-ignition engine". Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303644.

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Castro, F. L. J. de. "A zero-dimensional model of turbulent combusition in homogeneous charge spark ignition engine". Thesis, Cranfield University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352940.

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Luszcz, Pawel. "Combustion diagnostics in Homogeneous Charge Compression Ignition optical and thermal single cylinder engines". Thesis, University of Birmingham, 2009. http://etheses.bham.ac.uk//id/eprint/524/.

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The work presented in this thesis is intended to investigate the effects of fuel properties, injection strategy and timing on autoignition and combustion characteristics of a Homogeneous Charge Compression Ignition (HCCI) engine with a negative valve overlap (NVO) strategy. Conventional (pressure-transducer based) measurements and passive optical research have contributed to understanding of the chemical-physical sites of HCCI autoignition and combustion. This experimental work was undertaken on matching thermal and optical single cylinder research engines in configurations derived from a production Jaguar V8 engine. A thermal engine study using a range of fuels including conventional gasoline and primary reference fuels has been performed to gain insight into autoignition and combustion characteristics of various chemically dissimilar blends or components. This was done at different operating conditions by varying the engine speed and the proportion of residuals trapped. These measurements have shown that the autoignition and combustion characteristic of an HCCI operated engine are highly dependent on fuel blend composition and are also affected by engine operating conditions. It was found that the autoignition process type which the mixture undergoes, whether it is one- or two-step, depends very strongly both on fuel blend composition and on engine operating conditions. More specifically the presence and also proportion of particular chemical compounds in a blend could significantly contribute to the alteration of the process type. Similar experiments using the chosen engine operating points were repeated on the optical engine using passive optical diagnostics such as imaging and spectroscopy. Thereby it was possible to gain insight into the chemistry of one-step and two- step ignition processes. The image analysis of the port fuel injected (PFI) HCCI operation have been carried out for stoichiometric and lean conditions. A crank-angle resolved high-speed imaging technique was employed a piston crown window for optical access to the combustion chamber. The spatial repeatability nature of autoignition occurrence and the directions of combustion progress were evaluated using especially developed image processing technique. The insight into the expansion rates of burned areas and of the spreading velocities of reacting structures fronts was also gained by introducing two new image processing techniques. Various direct injection strategies (single and split injection) and timings, including fuel injection prior to and during the negative valve overlap period were optically investigated. The comprehensive study included the application of three diagnostic instruments: the Complementary Metal-Oxide Semiconductor (CMOS) high-speed colour imager, the intensified Charge Couple Device (CCD) and the imaging spectrograph. Among the other observations the applied passive techniques, the imaging and the spectroscopy in conjunction with adequate image processing techniques have shown that the combustion behaviour and also the colour of the burning mixture are dependent on the fuel injection scheme. With the investigated split (double) injection, when some of fuel is injected prior to TDC NVO the combustion behaviour is significantly different than when it is injected during even at TDC (NVO). There is a strong indication that a form of incandescence occurs during the NVO, which probably comes from the glowing soot. This is further supported by a quantification of the emitted luminescence and spectroscopic measurements during this phase.

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Alseda, Dorothée. "Contrôle de la combustion en mode HCCI (homogeneous charge compression ignition) par une formulation adaptée au carburant". Orléans, 2007. http://www.theses.fr/2007ORLE2033.

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Dans le contexte de la maîtrise des émissions de gaz à effet de serre et donc de la consommation des carburants, le moteur Diesel occupe une place privilégiée grâce à son meilleur rendement de combustion. Toutefois, les émissions de NOx et de particules sont un de ses handicaps. Pour limiter les émissions de ces polluants à l'échappement, les combustions basses températures comme la combustion HCCI (Homogeneous Charge Compression Ignition) représentent des alternatives prometteuses. La combustion HCCI est basée sur l'auto inflammation d'un mélange pauvre air/carburant dilué par de l'EGR. Les émissions de NOx et de particules diminuent d'un facteur de 10 à 100. Cependant, la zone de fonctionnement du moteur restreinte, le contrôle délicat de la combustion, le niveau de bruit et les émissions d'HC et de CO doivent être améliorés pour permettre un développement important de ces nouveaux modes de combustion. Une formulation adaptée du carburant fait partie des axes de progrès. L'objectif de cette thèse est justement de comprendre l'impact de la chimie du carburant pour améliorer le contrôle et l'initiation de la combustion HCCI. Trois dispositifs expérimentaux sont utilisés : un réacteur auto agité, une machine à compression rapide et un banc moteur. L'impact de différentes familles chimiques telles que des oléfines, des acétals et des naphtènes a été étudié. Cette thèse a mis en évidence l'influence de la chimie du carburant sur la combustion HCCI. Ainsi, il a été démontré que les doubles liaisons des oléfines ou bien encore les tensions cycliques des naphtènes constituaient des critères chimiques clés pour améliorer l'initiation et la propagation initiale de la combustion.

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Peucheret, Steven. "Exhaust gas reforming of natural gas to aid homogeneous charge compression ignition engine combustion". Thesis, University of Birmingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420510.

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Zheng, Jincai Cernansky N. P. Miller David L. "A study of homogeneous ignition and combustion processes in CI, SI, and HCCI engine systems /". Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/557.

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Bhattacharya, Arunim. "Analysis of Homogeneous Charge Compression Ignition Engine with Emphasis on Combustion Timing and Reaction Rate". Thesis, Northern Illinois University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10639722.

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HCCI engines are a class of engines which use high compression ratio to ignite a charge of air-fuel mixture, essentially eliminating the need for spark plugs. This contrasts with diesel engines (although HCCI can be used for diesel engines) where the fuel is injected near the top dead center of the compression stroke regime. Gasoline HCCI engines are of significance because, it attempts to improve the characteristics of the engine for example the thermal efficiency. High compression ratio comes with higher thermal efficiency, yet the peak temperature remains low enough to have low production rates of harmful oxides of nitrogen and formation of soot. However, there are certain challenges associated with such type of engine, one of which and perhaps the most important of all is how to control the combustion rate. Flow dynamics and chemical-kinetics analysis, is essential to predict combustion timing, duration, and rate. The objective of this study is to analyze a HCCI engine using, simulation analysis models including a three-dimensional CFD simulation model. Simulation analysis is carried out using a generic HCCI engine, initially with simplified chemical kinetics, and then using detailed chemical kinetics and using RANS turbulence CFD model. A sensitivity analysis of the effect of RPM on the combustion time, burn duration, heat release, efficiency and emission concentration are carried out.

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Libros sobre el tema "Homogeneous combustion"

SAE Powertrain & Fluid Systems Conference & Exhibition. Homogeneous charge compression ignition. Warrendale, PA: Society of Automotive Engineers, 2005.

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Engineers, Society of Automotive y SAE Powertrain & Fluid Systems Conference & Exhibition (2004 : Tampa, Fla.), eds. Homogeneous charge compression ignition. Warrendale, PA: Society of Automotive Engineers, 2004.

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Engineers, Society of Automotive y SAE International Spring Fuels & Lubricants Meeting and Exposition (2004 : Toulouse, France), eds. Homogeneous charge compression ignition (HCCI). Warrendale, PA: Society of Automotive Engineers, 2004.

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Engineers, Society of Automotive y SAE World Congress (2006 : Detroit, Mich.), eds. Homogeneous charge compression ignition (HCCI) combustion 2006. Warrendale, Pa: Society of Automotive Engineers, 2006.

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Engineers, Society of Automotive y SAE World Congress (2005 : Detroit, Mich.), eds. Homogeneous charge compression ignition (HCCI) combustion 2005. Warrendale, Pa: Society of Automotive Engineers, 2005.

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Engineers, Society of Automotive, ed. Homogeneous charge compression ignition engines. Warrendale, PA: Society of Automotive Engineers, 2002.

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Homogeneous charge compression ignition (HCCI). Warrendale, PA: Society of Automotive Engineers, 2004.

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Homogeneous Charge Compression Ignition (Hcci) Combustion. Society of Automotive Engineers Inc, 2001.

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Homogeneous charge compression ignition (HCCI) combustion 2004. Warrendale, PA: Society of Automotive Engineers, 2004.

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Homogeneous Charge Compression Ignition (Hcci) Combustion, 2003. Society of Automotive Engineers Inc, 2003.

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Capítulos de libros sobre el tema "Homogeneous combustion"

Hayes, R. E. y S. T. Kolaczkowski. "Homogeneous Gas Phase Reactions". En Introduction to Catalytic Combustion, 469–503. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203750186-4.

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Abid, Ridha. "On Prediction of Equilibrium States in Homogeneous Compressible Turbulence". En Transition, Turbulence and Combustion, 9–21. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1034-1_2.

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Lam, S. H. "On RNG Theory and the Decay Law of Homogeneous Isotropic Turbulence". En Transition, Turbulence and Combustion, 119–31. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1034-1_12.

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Miyagawa, Hiroshi, Yoshihiro Nomura y Makoto Koike. "Numerical Simulation of Combustion Processes in Homogeneous and Stratified Charge Spark Ignition Engines". En Smart Control of Turbulent Combustion, 72–83. Tokyo: Springer Japan, 2001. http://dx.doi.org/10.1007/978-4-431-66985-2_7.

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Luszcz, Pawel, K. Takeuchi, P. Pfeilmaier, M. Gerhardt, P. Adomeit, A. Brunn, C. Kupiek y B. Franzke. "Homogeneous lean burn engine combustion system development – Concept study". En Proceedings, 205–23. Wiesbaden: Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-21194-3_19.

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Livescu, D. y C. K. Madnia. "Compressibility Effects on the Scalar Mixing in Reacting Homogeneous Turbulence". En IUTAM Symposium on Turbulent Mixing and Combustion, 125–35. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1998-8_10.

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Cartigny, J. D. "Application of Variational Methods to Premixed, Homogeneous and Steady Turbulent Combustion". En Mathematical Modeling in Combustion and Related Topics, 431–39. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2770-4_28.

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Karagiannidis, Symeon. "Hetero-/Homogeneous Combustion and Stability Maps in Methane-Fueled Catalytic Microreactors". En Catalytic Microreactors for Portable Power Generation, 55–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17668-5_6.

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Skarke, Philipp, C. Auerbach, M. Bargende y H. J. Berner. "Multivariable air path and fuel path control for a Diesel engine with homogeneous combustion". En 17. Internationales Stuttgarter Symposium, 143–55. Wiesbaden: Springer Fachmedien Wiesbaden, 2017. http://dx.doi.org/10.1007/978-3-658-16988-6_15.

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Karagiannidis, Symeon. "Experimental and Numerical Investigation of the Hetero-/Homogeneous Combustion of Lean Propane/Air Mixtures Over Platinum". En Catalytic Microreactors for Portable Power Generation, 29–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17668-5_4.

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Actas de conferencias sobre el tema "Homogeneous combustion"

Haas, Simon, Michael Bargende y Hans-Jürgen Berner. "Ideal homogeneous combustion versus partly homogeneous combustion for PC diesel engines". En 8th International Conference on Engines for Automobiles. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-24-0016.

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COHEN, N. "Combustion response functions of homogeneous propellants". En 21st Joint Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-1114.

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Faravelli, Tiziano, Alessio Frassoldati, Eliseo Ranzi, Francesco Miccio y Michele Miccio. "Modeling Homogeneous Combustion in Bubbling Beds Burning Liquid Fuels". En 17th International Conference on Fluidized Bed Combustion. ASMEDC, 2003. http://dx.doi.org/10.1115/fbc2003-133.

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This paper presents a first implementation of a model for the description of homogeneous combustion of different fuels in fluidized bed combustors (FBC) at temperatures lower than the classical value for solid fuels, i.e. 850°C. Model construction is based on a key feature of the bubbling fluidized bed: a fuel-rich (endogenous) bubble is generated at the fuel injection point, travels inside the bed at constant pressure and undergoes chemical conversion in presence of mass transfer with the emulsion phase and of coalescence with air (exogenous) bubbles formed at the distributor and, possibly, with other endogenous bubbles. The model couples a fluid-dynamic sub-model based on the two phases theory of fluidization with a sub-model of gas phase oxidation. To this end, model development takes full advantage of a detailed chemical kinetics scheme, which includes both the low and high temperature mechanisms of hydrocarbon oxidation and accounts for about 200 molecular and radical species involved in more than 5000 reactions. Simple hypotheses are made to set-up and close mass balances of the various species as well as enthalpy balances in the bed. First, conversion and oxidation of gaseous fuels (e.g. methane) have been calculated as a test case for the model; then, n-dodecane has been taken into consideration to simply represent a diesel fuel by means of a pure hydrocarbon. Model predictions qualitatively agree with some evidences coming from experimental data reported in the literature. The fate of hydrocarbon species is extremely sensitive to temperature changes and oxygen availability in the rising bubble. A preliminary model validation has been attempted against the results of experiments carried out on a pre-pilot, bubbling combustor fired with underbed injection of a diesel fuel. In particular, model results confirm the trends that the heat release either in the bed or in the freeboard experimentally shows as a function of bed temperature. At lower emulsion phase temperatures many combustible species leave unburned the bed, post-combustion occurs past the bed and freeboard temperature considerably increases; as it is well known, this is an undesirable feature from the viewpoints of practical application and emission control.

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Xu, Kan, M. H. Liu, X. D. Cai y Y. L. Chen. "Effect of Surface Catalytic Reaction on Homogeneous Premixed Combustion". En ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2007. http://dx.doi.org/10.1115/icnmm2007-30131.

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Surface catalytic reaction is an important way to organize effective and stable combustion inside micro or mini-scale combustor. In this paper, the surface catalytic kinetics theory was used to study the effect of Pt-surface catalytic reaction on homogeneous lean fuel premixed combustion of CH4/Air in a 2-D mini-scale expanding channel. Using the CHEMKIN surface catalytic kinetics model, a numerical method was presented, which is based on the commercial code, FLUENT. The performance of our numerical procedure was validated by comparison of the results with those obtained from DETCHEM (Redenius, 2001) and the experimental data. Our studies found, compared with homogeneous combustion, the catalytic reaction produces a reduced extinction distance, a thicker flame, and a lower maximum temperature inside the flow field. Worthwhile, the temperature gradient on the unburned side of the flame is decreased. The effects of the surface catalytic reaction on the gas phase combustion are very sensitive to the equivalence ratio. The leaner the mixture is, the stronger the catalytic effects are.

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Blank, David A. "CNG/Methane-Combustion in a Homogeneous-Combustion Radical-Ignition D.I. Diesel Engine". En 2007 Fuels and Emissions Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-01-0047.

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Sato, Susumu y Norimasa Iida. "Analysis of DME Homogeneous Charge Compression Ignition Combustion". En 2003 JSAE/SAE International Spring Fuels and Lubricants Meeting. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-1825.

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Suzuki, Hisakazu, Noriyuki Koike y Matsuo Odaka. "Combustion Control Method of Homogeneous Charge Diesel Engines". En International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1998. http://dx.doi.org/10.4271/980509.

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Gonçalves, R., Koshun Iha y J. A. F. Rocco. "Detailed Study of Hydrogen Combustion in Homogeneous Reactor". En 48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-4006.

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Kong, Song-Charng, Nabil Ayoub y Rolf D. Reitz. "Modeling Combustion in Compression Ignition Homogeneous Charge Engines". En International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1992. http://dx.doi.org/10.4271/920512.

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Hanabusa, Hiroshi, Takashi Kondo, Kohtaro Hashimoto, Hiroshi Sono y Masahiro Furutani. "Study on Homogeneous Lean Charge Spark Ignition Combustion". En SAE/KSAE 2013 International Powertrains, Fuels & Lubricants Meeting. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2013. http://dx.doi.org/10.4271/2013-01-2562.

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Informes sobre el tema "Homogeneous combustion"

Flowers, Daniel L. Combustion in Homogeneous Charge Compression Ignition Engines: Experiments and Detailed Chemical Kinetic Simulations. Office of Scientific and Technical Information (OSTI), junio de 2002. http://dx.doi.org/10.2172/15006123.

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J. Helble, Clara Smith y David Miller. Homogeneous and Heterogeneous Reaction and Transformation of Hg and Trace Metals in Combustion Systems. Office of Scientific and Technical Information (OSTI), agosto de 2009. http://dx.doi.org/10.2172/1004877.

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(Homogeneous-heterogeneous combustion: Thermal and chemical coupling). Office of Scientific and Technical Information (OSTI), enero de 1992. http://dx.doi.org/10.2172/7079399.

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[Homogeneous-hetergeneous combustion: Thermal and chemical coupling: Annual report]. Office of Scientific and Technical Information (OSTI), junio de 1993. http://dx.doi.org/10.2172/10159928.

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[Homogeneous-hetergeneous combustion: Thermal and chemical coupling: Annual report]. Office of Scientific and Technical Information (OSTI), enero de 1993. http://dx.doi.org/10.2172/6565905.

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[Homogeneous-heterogeneous combustion: Thermal and chemical coupling]. [Annual report] research in progress. Office of Scientific and Technical Information (OSTI), enero de 1992. http://dx.doi.org/10.2172/10183801.

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