Gotowe bibliografie tematyczne / Ignition engine; Hydrogen

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Gotowa bibliografia na temat „Ignition engine; Hydrogen”

Autor: Grafiati
Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Ignition engine; Hydrogen"

1

Mariani, Antonio, Andrea Unich i Mario Minale. "Combustion of Hydrogen Enriched Methane and Biogases Containing Hydrogen in a Controlled Auto-Ignition Engine". Applied Sciences 8, nr 12 (18.12.2018): 2667. http://dx.doi.org/10.3390/app8122667.

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The paper describes a numerical study of the combustion of hydrogen enriched methane and biogases containing hydrogen in a Controlled Auto Ignition engine (CAI). A single cylinder CAI engine is modelled with Chemkin to predict engine performance, comparing the fuels in terms of indicated mean effective pressure, engine efficiency, and pollutant emissions. The effects of hydrogen and carbon dioxide on the combustion process are evaluated using the GRI-Mech 3.0 detailed radical chain reactions mechanism. A parametric study, performed by varying the temperature at the start of compression and the equivalence ratio, allows evaluating the temperature requirements for all fuels; moreover, the effect of hydrogen enrichment on the auto-ignition process is investigated. The results show that, at constant initial temperature, hydrogen promotes the ignition, which then occurs earlier, as a consequence of higher chemical reactivity. At a fixed indicated mean effective pressure, hydrogen presence shifts the operating range towards lower initial gas temperature and lower equivalence ratio and reduces NOx emissions. Such reduction, somewhat counter-intuitive if compared with similar studies on spark-ignition engines, is the result of operating the engine at lower initial gas temperatures.
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Tutak, Wojciech, Arkadiusz Jamrozik i Karol Grab-Rogaliński. "Co-Combustion of Hydrogen with Diesel and Biodiesel (RME) in a Dual-Fuel Compression-Ignition Engine". Energies 16, nr 13 (23.06.2023): 4892. http://dx.doi.org/10.3390/en16134892.

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The utilization of hydrogen for reciprocating internal combustion engines remains a subject that necessitates thorough research and careful analysis. This paper presents a study on the co-combustion of hydrogen with diesel fuel and biodiesel (RME) in a compression-ignition piston engine operating at maximum load, with a hydrogen content of up to 34%. The research employed engine indication and exhaust emissions measurement to assess the engine’s performance. Engine indication allowed for the determination of key combustion stages, including ignition delay, combustion time, and the angle of 50% heat release. Furthermore, important operational parameters such as indicated pressure, thermal efficiency, and specific energy consumption were determined. The evaluation of dual-fuel engine stability was conducted by analyzing variations in the coefficient of variation in indicated mean effective pressure. The increase in the proportion of hydrogen co-combusted with diesel fuel and biodiesel had a negligible impact on ignition delay and led to a reduction in combustion time. This effect was more pronounced when using biodiesel (RME). In terms of energy efficiency, a 12% hydrogen content resulted in the highest efficiency for the dual-fuel engine. However, greater efficiency gains were observed when the engine was powered by RME. It should be noted that the hydrogen-powered engine using RME exhibited slightly less stable operation, as measured by the COVIMEP value. Regarding emissions, hydrogen as a fuel in compression ignition engines demonstrated favorable outcomes for CO, CO2, and soot emissions, while NO and HC emissions increased.
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Shi, Wei Bo, i Xiu Min Yu. "Efficiency and Emissions of Spark Ignition Engine Using Hydrogen and Gasoline Mixtures". Advanced Materials Research 1070-1072 (grudzień 2014): 1835–39. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1835.

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This paper reviews and summarizes recent developments in hydrogen and gasoline mixtures powered engine research. According to the hydrogen and gasoline injection location, engine can be divided into three categories: hydrogen intake port injection, gasoline direct injection; Hydrogen direct injection, gasoline intake port injection; hydrogen and gasoline intake port injection. Different gasoline and hydrogen injection location determines the engines have different advantages. Follow an overview of spark ignition engine using hydrogen and gasoline mixtures, general trade-off when operating engine on hydrogen and gasoline mixtures are analyzed and highlights regarding accomplishments in efficiency improvement and emissions reduction are presented. These include estimates of efficiency potential of hydrogen and gasoline engines, fuel economy and emissions.
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Li, Hailin, i Ghazi A. Karim. "Hydrogen Fueled Spark-Ignition Engines Predictive and Experimental Performance". Journal of Engineering for Gas Turbines and Power 128, nr 1 (23.07.2004): 230–36. http://dx.doi.org/10.1115/1.2055987.

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Hydrogen is well recognized as a suitable fuel for spark-ignition engine applications that has many unique attractive features and limitations. It is a fuel that can continue potentially to meet the ever-increasingly stringent regulations for exhaust and greenhouse gas emissions. The application of hydrogen as an engine fuel has been tried over many decades by numerous investigators with varying degrees of success. However, the performance data reported often tend not to display consistent agreement between the various investigators, mainly because of the wide differences in engine type, size, operating conditions used, and the differing criteria employed to judge whether knock is taking place or not. With the ever-increasing interest in hydrogen as an engine fuel, there is a need to be able to model extensively various features of the performance of spark ignition (S.I.) hydrogen engines so as to investigate and compare reliably the performance of widely different engines under a wide variety of operating conditions. In the paper we employ a quasidimensional two-zone model for the operation of S.I. engines when fueled with hydrogen. In this approach, the engine combustion chamber at any instant of time during combustion is considered to be divided into two temporally varying zones: a burned zone and an unburned zone. The model incorporates a detailed chemical kinetic model scheme of 30 reaction steps and 12 species, to simulate the oxidation reactions of hydrogen in air. A knock prediction model, developed previously for S.I. methane-hydrogen fueled engine applications was extended to consider operation on hydrogen. The effects of changes in operating conditions, including a very wide range of variations in the equivalence ratio on the onset of knock and its intensity, combustion duration, power, efficiency, and operational limits were investigated. The results of this predictive approach were shown to validate well against the corresponding experimental results, obtained mostly in a variable compression ratio CFR engine. On this basis, the effects of changes in some of the key operational engine variables, such as compression ratio, intake temperature, and spark timing are presented and discussed. Some guidelines for superior knock-free operation of engines on hydrogen are also made.
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NATRIASHVILI, Tamaz M., i Revaz Z. KAVTARADZE. "SPECIAL FEATURES OF THE HYDROGEN-DIESEL ENGINE WORKING PROCESS". Mechanics of Machines, Mechanisms and Materials 1, nr 58 (marzec 2022): 31–36. http://dx.doi.org/10.46864/1995-0470-2022-1-58-31-36.

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The works related to the research of the problems and prospects of a hydrogen-fueled reciprocating engine, published so far, mainly relate to the use of hydrogen in spark-ignition engines. Developments of BMW, Toyota and other manufacturers are used in production car models. However, despite a number of advantages, serial production of hydrogen-diesel engines does not yet exist. This paper presents some results of the study of the working process features of a hydrogen-diesel engine with direct injection of hydrogen gas, analyzes the problems and prospects of the concept of the hydrogen-diesel engine. The obtained results of 3D modelling of the working process and experimental research prove the prospects and reality of the implementation of the hydrogen-diesel engine concept.
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LONGWIC, Rafał, Gracjana WOŹNIAK i Przemysław SANDER. "Compression-ignition engine fuelled with diesel and hydrogen engine acceleration process". Combustion Engines 180, nr 1 (30.03.2020): 47–51. http://dx.doi.org/10.19206/ce-2020-108.

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The paper presents the results of research consisting in acceleration of a diesel engine powered by diesel and hydrogen. The test stand included a diesel engine 1.3 Multijet, hydrogen cylinders and measuring equipment. Empirical tests included engine testing at idle and at specified speeds on a chassis dynamometer, vehicle acceleration in selected gears from specified initial values of engine revolutions was also tested.. Selected parameters of the diesel fuel combustion and injection process were calculated and analyzed. The paper is a preliminary attempt to determine the possibility of co-power supply to diesel and hydrogen engines.
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Shi, Wei Bo, Xiu Min Yu i Ping Sun. "Performance and Emissions of a Hydrogen-Gasoline SI Engine". Applied Mechanics and Materials 713-715 (styczeń 2015): 243–46. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.243.

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When hydrogen is added to a gasoline fueled spark ignition engine the lean limit of the engine can be extended. Lean burn engines are inherently more efficient and have the potential for significantly lower NOx emissions. Thus, the purpose of this paper is to investigate the effect of hydrogen addition to gasoline-air mixture on the performance and exhaust emission characteristics of a spark ignition engine. Six excess air ratios are used ranging from 0.8 to 1.5. The amount of hydrogen added is 18.5% and 30% by energy fraction. The test engine is operated at 1500 rpm. From the experimental observations, the effect of hydrogen addition on thermal efficiency, specific fuel consumption, cyclic variations of the indicated mean effective pressure (IMEP), and emissions of CO, unburned hydrocarbons and NOx are analyzed.
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TATEISHI, Kazuhiro, i Yoshitaka KATO. "E204 STUDY ABOUT HYDROGEN ADDITION ON GASOLINE SPARK IGNITION ENGINE : FLAMMABILITY OF MIXTURE CONTAINING SYNGAS AND GASOLINE IN SPARK IGNITION ENGINE(Diesel Engine)". Proceedings of the International Conference on Power Engineering (ICOPE) 2009.2 (2009): _2–383_—_2–388_. http://dx.doi.org/10.1299/jsmeicope.2009.2._2-383_.

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Liu, Jiahui. "Introduction of Abnormal Combustion in Hydrogen Internal Combustion Engines and the Detection Method". Trends in Renewable Energy 8, nr 1 (2022): 38–48. http://dx.doi.org/10.17737/tre.2022.8.1.00136.

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As a clean, environmentally friendly and renewable energy source, hydrogen as an alternative engine fuel can greatly reduce atmospheric pollution and alleviate the shortage of oil resources, and is the most promising alternative fuel for vehicles among new fuels. However, due to its fast combustion rate and wide ignition limit, hydrogen often shows abnormal combustion phenomena (such as pre-ignition, backfire and knock), when it is used in the engine, thus affecting the performance and normal use of engines. In this paper, the advantages and disadvantages of hydrogen as an alternative fuel for the engine are summarized according to the characteristics of hydrogen. On this basis, the mechanism, influence factors and harm of abnormal combustion in the hydrogen internal combustion engine are analyzed and summarized, which provides a theoretical basis for solving abnormal combustion problems. Finally, several commonly used abnormal combustion detection methods are summarized.
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Huang, Junfeng, Jianbing Gao, Ce Yang, Guohong Tian i Chaochen Ma. "The Effect of Ignition Timing on the Emission and Combustion Characteristics for a Hydrogen-Fuelled ORP Engine at Lean-Burn Conditions". Processes 10, nr 8 (5.08.2022): 1534. http://dx.doi.org/10.3390/pr10081534.

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The application of hydrogen fuel in ORP engines makes the engine power density much higher than that of a reciprocating engine. This paper investigated the impacts of combustion characteristics, energy loss, and NOx emissions of a hydrogen-fuelled ORP engine by ignition timing over various equivalence ratios using a simulation approach based on FLUENT code without considering experiments. The simulations were conducted under the equivalence ratio of 0.5~0.9 and ignition timing of −20.8~8.3 °CA before top dead centre (TDC). The engine was operated under 1000 RPM and wide-open throttle condition which was around the maximum engine torque. The results indicated that significant early ignition of the ORP engine restrained the flame development in combustion chambers due to the special relative positions of ignition systems to combustion chambers. In-cylinder pressure evolutions were insensitive to early ignition. The start of combustion was the earliest over the ignition timing of −17.3 °CA for individual equivalence ratios; the correlations of the combustion durations and equivalence ratios were dependent on the ignition timing. Combustion durations were less sensitive to equivalence ratios in the ignition timing range of −14.2~−11.1 °CA before TDC. The minimum and maximum heat release rates were 15 J·(°CA)−1 and 22 J·(°CA)−1 over the equivalence ratios of 0.5 and 0.9, respectively. Indicated thermal efficiency was higher than 41% for early ignition scenarios, and it was significantly affected by late ignition. Energy loss by cylinder walls and exhaust was in the range of 10%~16% and 42%~58% of the total fuel energy, respectively. The impacts of equivalence ratios on NOx emission factors were affected by ignition timing.
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Rozprawy doktorskie na temat "Ignition engine; Hydrogen"

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Silva, Isaac Alexander. "Onboard Hydrogen Generation for a Spark Ignition Engine via Thermochemical Recuperation". Thesis, University of California, Davis, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1585124.

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A method of exhaust heat recovery from a spark-ignition internal combustion engine was explored, utilizing a steam reforming thermochemical reactor to produce a hydrogen-rich effluent, which was then consumed in the engine. The effects of hydrogen in the combustion process have been studied extensively, and it has been shown that an extension of the lean stability limit is possible through hydrogen enrichment. The system efficiency and the extension of the operational range of an internal combustion engine were explored through the use of a methane fueled naturally aspirated single cylinder engine co-fueled with syngas produced with an on board methane steam reformer. It was demonstrated that an extension of the lean stability limit is possible using this system.

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Christodoulou, Fanos. "Hydrogen, nitrogen and syngas enriched diesel combustion". Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/9109.

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On-board hydrogen and syngas production is considered as a transition solution from fossil fuel to hydrogen powered vehicles until problems associated with hydrogen infrastructure, distribution and storage are resolved. A hydrogen- or syngas-rich stream, which substitutes part of the main hydrocarbon fuel, can be produced by supplying diesel fuel in a fuel-reforming reactor, integrated within the exhaust pipe of a diesel engine. The primary aim of this project was to investigate the effects of intake air enrichment with product gas on the performance, combustion and emissions of a diesel engine. The novelty of this study was the utilisation of the dilution effect of the reformate, combined with replacement of part of the hydrocarbon fuel in the engine cylinder by either hydrogen or syngas. The experiments were performed using a fully instrumented, prototype 2.0 litre Ford HSDI diesel engine. The engine was tested in four different operating conditions, representative for light- and medium-duty diesel engines. The product gas was simulated by bottled gases, the composition of which resembled that of typical diesel reformer product gas. In each operating condition, the percentage of the bottled gases and the start of diesel injection were varied in order to find the optimum operating points. The results showed that when the intake air was enriched with hydrogen, smoke and CO emissions decreased at the expense of NOx. Supply of nitrogen-rich combustion air into the engine resulted in a reduction in NOx emissions; nevertheless, this technique had a detrimental effect on smoke and CO emissions. Under low-speed low-load operation, enrichment of the intake air with a mixture of hydrogen and nitrogen led to simultaneous reductions in NOx, smoke and CO emissions. Introduction of a mixture of syngas and nitrogen into the engine resulted in simultaneous reductions in NOx and smoke emissions over a wide range of the engine operating window. Admission of bottled gases into the engine had a negative impact on brake thermal efficiency. Although there are many papers in the literature dealing with the effects of intake air enrichment with separate hydrogen, syngas and nitrogen, no studies were found examining how a mixture composed of hydrogen and nitrogen or syngas and nitrogen would affect a diesel engine. Apart from making a significant contribution to existing knowledge, it is 3 believed that this research work will benefit the development of an engine-reformer system since the product gas is mainly composed of either a mixture of hydrogen and nitrogen or a mixture of syngas and nitrogen.
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Dunstan, T. D. "Turbulent Premixed Flame Kernel Growth During The Early Stages Using Direct Numerical Simulation". Thesis, Cranfield University, 2008. http://hdl.handle.net/1826/3486.

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In this thesis Direct Numerical Simulation (DNS) is used to investigate the development of turbulent premixed flame kernels during the early stages of growth typical of the period following spark ignition. Two distinct aspects of this phase are considered: the interaction of the expanding kernel with a field of decaying turbulence, and the chemical and thermo-diffusive response of the flame for different fresh-gas compositions. In the first part of the study, three-dimensional, repeated simulations with single-step chemistry are used to generate ensemble statistics of global flame growth. The surface-conditioned mean fluid-velocity magnitude is found to vary significantly across different isosurfaces of the reaction progress variable, and this is shown to lead to a bias in the distribution of the Surface Density Function (SDF) around the developing flame. Two-dimensional simulations in an extended domain indicate that this effect translates into a similar directional bias in the Flame Surface Density (FSD) at later stages in the kernel development. Properties of the fresh gas turbulence decay are assessed from an independent, non-reacting simulation database. In the second part of this study, two-dimensional simulations with a detailed 68-step reaction mechanism are used to investigate the thermo-diffusive response of pure methane-air, and hydrogen-enriched methane-air flames. The changes in local and global behaviour due to the different laminar flame characteristics, and the response of the flames to strain and curvature are examined at different equivalence ratios and turbulence intensities. Mechanisms leading to flame quenching are discussed and the effect of mean flame curvature is assessed through comparison with an equivalent planar flame. The effects of hydrogen addition are found to be particularly pronounced in flame kernels due to the higher positive stretch rates and reduced thermo-diffusive stability of hydrogen-enriched flames.
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Stousland, Tyler Brian. "Experimental Use of Hydrogen to Reduce the Consumption of Carbon Fuels in a Compression Ignition Engine and Its Effect on Performance". Thesis, North Dakota State University, 2016. https://hdl.handle.net/10365/27641.

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As part of an effort to find use for electric energy produced by wind turbines, Basin Electric started a program to produce hydrogen through electrolysis. It is not enough to simply produce hydrogen, there needs to be uses for the hydrogen in order to make the project worth pursuing. Hydrogen can be used to supplement diesel fuel in the combustion process in a compression ignition engine. This research will go over two engines which were tested running different combinations of hydrogen and diesel fuel. The results will show how both engines were able to replace up to 50% of the diesel fuel energy input with hydrogen. This paper will also talk about how the addition of hydrogen affects the combustion process by increasing the peak cylinder pressure by 44% and advancing the peak cylinder pressure by 13? of crank angle.
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Hamori, Ferenc. "Exploring the limits of hydrogen assisted jet ignition /". Connect to thesis, 2006. http://eprints.unimelb.edu.au/archive/00001606.

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Toulson, Elisa. "Applying alternative fuels in place of hydrogen to the jet ignition process /". Connect to thesis, 2008. http://repository.unimelb.edu.au/10187/3532.

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Antunes, Jorge Manuel Gomes. "The use of hydrogen as a fuel for compression ignition engines". Thesis, University of Newcastle Upon Tyne, 2011. http://hdl.handle.net/10443/1365.

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The objective of this research was to investigate the applicability of hydrogen as a fuel for compression ignition engines. The research indicates that hydrogen is a suitable fuel for “compression ignition” (CI) engines, “fumigated diesel” (FD), “homogeneous charge compression ignition” (HCCI) and “direct injection of hydrogen” (DIH2). Peculiarities of the various modes of operation with hydrogen were investigated using a high speed commercial direct injection diesel engine, Deutz 1FL 511 with a compression ratio of 17:1, as well as a simulation model to assist with on the understanding of certain phenomena that were impossible to reproduce due to the engine and transducers physical limitations. Instrumentation with high-speed data acquisition was designed and installed to measure crankshaft speed and position, airflow rate, inlet air pressure and temperature, fuel consumption, brake power, cylinder combustion pressure, and exhaust gas temperature. The design, construction and characterization of a pulse controlled hydrogen injection system for HCCI and DIH2 was carried out and discussed. In this research, special attention was paid to characterize and identify the operating parameters that control the hydrogen combustion in a CI engine. High rates of engine cylinder pressure rise were found when using hydrogen and some form of control solution is required. Simulation and engine tests were carried out to characterize and identify new design approaches to control such high rates of pressure rise, culminating in the proposal of a pulsed injection methodology, and also the use of the Miller cycle to mitigate the observed high rates of pressure rise. A number of possible iv innovative solutions and measures, making the hydrogen engine operation reliable and safe are also presented.
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Rocchi, Jean-Philippe. "Simulations aux grandes échelles de la phase d'allumage dans un moteur fusée cryotechnique". Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/14667/1/rocchi.pdf.

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À ses débuts, la conquête spatiale a pu bénéficier des rivalités politiques de la Guerre Froide pour se développer rapidement sans réellement se soucier des efforts économiques à fournir. Aujourd’hui, de nombreux pays subissent le revers de la médaille de cette course effrénée : pour maintenir une flotte de lanceurs viable économiquement, les différentes agences spatiales doivent faire face à un dilemme opposant la minimisation des coûts de lancement à la maximisation de leur fiabilité. Dans cette logique d’optimisation, les industriels présents dans ce processus de réflexion se tournent vers la simulation numérique pour tenter d’améliorer leurs connaissances des technologies existantes, en particulier sur les zones d’ombres inaccessibles aux mesures expérimentales. Dans la lignée de plusieurs études théoriques et expérimentales, ces travaux visent à apporter un éclairage nouveau sur les phénomènes se produisant lors de l’allumage d’un moteur fusée cryotechnique. Ces recherches se tournent dans un premier temps vers l’amélioration de la modélisation de la flamme H2/O2. La validation d’une cinétique chimique réduite initialement destinée à la combustion H2/Air permet de justifier son utilisation lors de l’allumage. Puis, le développement d’un modèle de combustion turbulente pour le régime de flamme de diffusion est mené dans le but de palier aux limitations du modèle de flamme épaissie. Enfin, une analyse du cas où les régimes prémélangés et non-prémélangés sont présents tous les deux permet d’étudier un moyen simple de les distinguer même dans le cas où ils sont très proches. Dans un second temps, ces travaux se tournent vers l’étude de l’allumage dans un moteur fusée cryotechnique. Après avoir analysé de manière globale le calcul d’une séquence simplifiée, deux études plus approfondies sont menées pour investiguer, d’une part, les différents régimes de combustion, et d’autre part, les différents modes de propagation de la flamme propres à cette configuration.
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Tahtouh, Toni. "Les effets combinés de l'hydrogène et de la dilution dans un moteur à allumage commandé". Phd thesis, Université d'Orléans, 2010. http://tel.archives-ouvertes.fr/tel-00604166.

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Une des solutions pour diminuer les émissions polluantes émises par un moteur à combustion interne est de réinjecter une partie des gaz d'échappement (Exhaust Gas Recirculation, EGR) à l'admission. Cependant, dans le cas d'une dilution du mélange air-carburant trop importante, la combustion est plus instable voire ne pas s'entretenir. L'ajout d'une faible quantité d'hydrogène a le potentiel de contrer cet effet négatif de forte dilution. C'est dans ce contexte que ce travail de thèse est basé sur une étude détaillée des effets combinés de l'ajout de l'hydrogène et de la dilution dans un moteur à allumage commandé alimenté par du méthane ou de l'iso-octane. Dans la première partie de ce travail, le potentiel de l'ajout de l'hydrogène combiné à la dilution, en termes d'émissions polluantes et de rendement global du moteur, est montré. Dans la deuxième partie, afin de mieux comprendre l'effet de l'hydrogène et de la dilution dans un moteur à combustion interne et leurs influences sur les propriétés fondamentales de la combustion, la vitesse de combustion laminaire, paramètre fondamentale, a été déterminée expérimentalement pour des mélanges isooctane ou méthane avec de l'air contenant différents pourcentages d'hydrogène et de dilution. Des corrélations ont pu ainsi être formulées permettant d'estimer la vitesse fondamentale de combustion laminaire pour ces mélanges. Dans la dernière partie, l'utilisation de deux diagnostics optiques (la chemiluminescence de la flamme et la tomographie par plan laser du front de flamme couplé à la mesure de vitesse par vélocimétrie par imagerie de particules) a permis de quantifier l'effet de l'hydrogène et de la dilution sur la propagation de flamme turbulente dans un moteur à allumage commandé muni d'accès optiques. Nous avons ainsi montré que le la vitesse de combustion laminaire a un effet prépondérant, comparé au nombre de Lewis, sur la vitesse de combustion turbulente dans un moteur à allumage commandé.
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Hsieh, Ming-Fong, i 謝明峰. "Experimental study of hydrogen direct injection spark ignition engine". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/61958709169998335777.

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碩士
逢甲大學
機械工程學所
97
This study chooses the hydrogen direct injection on the performance of the hydrogen engine to explore. The experiment engine adopts single cylinder and four strokes which converts gasoline fuel into hydrogen fuel. Moreover , modified on the engine, installed fuel injection systems,control systems, air intake system and power measuring device. Experimental results show that fuel injection timing in the intake stroke (270-300ObTDC) can successfully start the hydrogen engine, WOT status and hydrogen injection pressure 60bar amount maximum speed 2200rpm.That is disagreed with default target of 3600rpm. The major cause of ignition timing is not correct, when equivalence ratio changes ignition timing could not in the maximum torque (MBT) sparking. Followed by reasons include fuel injection pressure could not be changed with the equivalence ratio and the control circuit trigger signals as may be unstable. This thesis discuss our experimental results with references , discussion of the ignition timing, injection pressure, control circuit and the relationship between the experimental results. This research is insufficient ignition timing angle to crank angle 20O not yet reached the goal of the experiment caused.
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Książki na temat "Ignition engine; Hydrogen"

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Zurawski, Robert L. Catalytic ignition of hydrogen and oxygen propellants. [Washington, DC: National Aeronautics and Space Administration, 1988.

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United States. National Aeronautics and Space Administration., red. Hydrogen-oxygen torch ignitor. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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United States. National Aeronautics and Space Administration., red. Hydrogen-oxygen torch ignitor. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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United States. National Aeronautics and Space Administration., red. Hydrogen-oxygen torch ignitor. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Billings, Roger E. The hydrogen world view. Independence, Mo: American Academy of Science, 1991.

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Engineers, Society of Automotive, i Future Transportation Technology Conference and Exposition (1993 : San Antonio, Tex.), red. Alternative fuels: Alcohols, hydrogen, natural gas and propane. Warrendale, PA: Society of Automotive Engineers, 1993.

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Rouler sans pétrole. Québec: Éditions MultiMondes, 2008.

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Welch, Alan Buckingham. Performance characteristics of a hydrogen-fueled diesel engine with ignition assist. 1986.

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Combustion Processes in Engine Utilizing Gaseous Fuels. SAE International, 1997.

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Hydrogen-oxygen torch ignitor. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Części książek na temat "Ignition engine; Hydrogen"

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Sharma, Priybrat, i Atul Dhar. "Advances in Hydrogen-Fuelled Compression Ignition Engine". W Prospects of Alternative Transportation Fuels, 55–78. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7518-6_5.

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Kosmadakis, G. M., F. Moreno, J. Arroyo, M. Muñoz i C. D. Rakopoulos. "Spark-Ignition Engine Fueled with Methane-Hydrogen Blends". W Energy, Transportation and Global Warming, 405–20. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30127-3_31.

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Shrestha, S. O. Bade, i G. A. Karim. "Hydrogen as an Additive to Methane for Spark Ignition Engine Applications". W Hydrogen Power: Theoretical and Engineering Solutions, 55–61. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-015-9054-9_7.

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Gärtner, Jan Wilhelm, Daniel D. Loureiro i Andreas Kronenburg. "Modelling and Simulation of Flash Evaporation of Cryogenic Liquids". W Fluid Mechanics and Its Applications, 233–50. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09008-0_12.

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AbstractRocket engine manufacturers attempt to replace toxic, hypergolic fuels by less toxic substances such as cryogenic hydrogen and oxygen. Such components will be superheated when injected into the combustion chamber prior to ignition. The liquids will flash evaporate and subsequent mixing will be crucial for a successful ignition of the engine. We now conduct a series of DNS and RANS-type simulations to better understand this mixing process including microscopic processes such as bubble growth, bubble-bubble interactions, spray breakup dynamics and the resulting droplet size distribution. Full scale RANS simulations provide further insight into effects associated with flow dynamic such as shock formation behind the injector outlet. Capturing these gas dynamic effects is important, as they affect the spray morphology and droplet movements.
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Ibrahim, M. Mohamed, i A. Ramesh. "Experimental Analysis of Hydrogen-Fueled Homogeneous Charge Compression Ignition (HCCI) Engine". W Exergy for A Better Environment and Improved Sustainability 2, 471–87. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62575-1_34.

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Adritowin, F., i V. Christus Jeya Singh. "Studies on Hydrogen Production for Enhancing Performance of Spark Ignition Engine". W Recent Advances in Energy Technologies, 441–50. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3467-4_28.

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Verma, Saket, S. C. Kaushik i L. M. Das. "Exergy Analysis of Hydrogen-Fueled Spark Ignition Engine Based on Numerical Investigations". W Combustion for Power Generation and Transportation, 297–316. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3785-6_14.

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Shere, Anilkumar, i K. A. Subramanian. "Enhancement of Hydrogen Energy Share in an Automotive Compression Ignition Engine Using EGR". W Lecture Notes in Mechanical Engineering, 515–26. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5996-9_40.

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De Simio, Luigi, Michele Gambino i Sabato Iannaccone. "Using Natural Gas/Hydrogen Mixture as a Fuel in a 6-Cylinder Stoichiometric Spark Ignition Engine". W Enriched Methane, 175–94. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-22192-2_10.

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Shere, Anilkumar, i K. A. Subramanian. "Performance Enhancement and Emissions Reduction in a DME Fueled Compression Ignition Engine Using Hydrogen Under Dual-Fuel Mode". W Lecture Notes in Mechanical Engineering, 505–23. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8517-1_40.

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Streszczenia konferencji na temat "Ignition engine; Hydrogen"

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Prasad, Rajesh Kumar, i Avinash Kumar Agarwal. "Development of Laser Ignited Hydrogen Fueled Supercharged Engine". W Laser Ignition Conference. Washington, D.C.: OSA, 2017. http://dx.doi.org/10.1364/lic.2017.lwa5.7.

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Agarwal, Avinash Kumar, i Rajesh Kumar Prasad. "Laser Ignition of Hydrogen Enriched Compressed Natural Gas (HCNG) Fueled Supercharged Engine". W Laser Ignition Conference. Washington, D.C.: OSA, 2017. http://dx.doi.org/10.1364/lic.2017.ltha3.3.

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Bika, Anil Singh, Luke Franklin, Helmer Acevedo i David Kittelson. "Hydrogen Fueled Homogeneous Charge Compression Ignition Engine". W SAE 2011 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2011. http://dx.doi.org/10.4271/2011-01-0672.

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Nguyen, Ducduy, Renston Fernandes i James W. G. Turner. "Variable Compression Ratio Hydrogen-Fueled Homogeneous Charge Compression Ignition Engine". W 16th International Conference on Engines & Vehicles. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2023. http://dx.doi.org/10.4271/2023-24-0067.

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<div class="section abstract"><div class="htmlview paragraph">Hydrogen-fueled homogeneous charge compression ignition (HCCI) engines have shown the ability to provide a cleaner and more efficient alternative to conventional fossil fuels. The use of hydrogen as a fuel has the potential to reduce greenhouse gas and promote sustainability.</div><div class="htmlview paragraph">In this study, a modified single-cylinder Cooperative Fuel Research (CFR) engine was utilised to operate on hydrogen in a HCCI combustion mode under various compression ratio (CR) conditions. In the experiments, the amount of hydrogen injected was adjusted at each CR to maintain the crank angle at 50% mass fraction burned (CA50) combustion phasing at 3±1 crank angle degrees after top dead center or as lean as possible. The engine speed was fixed at 600 rpm, and the impact of different intake air temperatures was also investigated.</div><div class="htmlview paragraph">The results indicated that as the compression ratio increases, the air-fuel ratio needs to be increased to maintain the desired CA50 value, i.e., the engine needs to operate leaner. The net indicated mean effective pressure of the engine reached a value of 2.9 bar at a compression ratio of 14 and an intake air temperature of 150<sup>O</sup>C. The effects of CR and intake temperature on engine performance metrics, such as power output and the rate of heat release, were also investigated. The experimental data showed that the intake air temperature did not have a significant effect on engine performance and power output. At a compression ratio of 16:1 and 600 rpm, the engine's indicated thermal efficiency was found to be approximately 33% across the range of intake temperatures investigated. Furthermore, the fact that the engine effectively produced zero NOx emissions under the various CR conditions tested further highlights the potential for hydrogen HCCI engines to be adopted as a cleaner and more efficient alternative to internal combustion engines using conventional fuels, provided the available range of operation is acceptable and can be made large enough for practical applications.</div></div>
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Li, Hailin, i Ghazi A. Karim. "Hydrogen Fuelled Spark-Ignition Engines: Predictive and Experimental Performance". W ASME 2003 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ices2003-0548.

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Hydrogen is well recognized as a suitable fuel for spark-ignition engine applications that has many unique attractive features and limitations. It is a fuel that can continue potentially to meet the ever increasingly stringent regulations for exhaust and greenhouse gas emissions. The application of hydrogen as an engine fuel has been tried over many decades by numerous investigators with varying degrees of success. The performance data reported often tend not to display consistent agreement between the various investigators mainly because of the wide differences in engine type, size, operating conditions used and the differing criteria employed to judge whether knock is taking place or not. With the ever-increasing interest in hydrogen as an engine fuel, there is a need to be able to model extensively various features of the performance of spark ignition (S.I.) hydrogen engines so as to investigate and compare reliably the performance of widely different engines under a wide variety of operating conditions. The paper employs a quasi-dimensional two-zone model for the operation of S.I. engines when fuelled with hydrogen. In this approach, the engine combustion chamber at any instant of time during combustion is considered to be divided into two temporally varying zones: a burned zone and an unburned zone. The model incorporates a detailed chemical kinetic model scheme of 30 reaction steps and 12 species, to simulate the oxidation reactions of hydrogen in air. A knock prediction model, developed previously for S.I. methane-hydrogen fuelled engine applications (Shrestha and Karim 1999(a) and 1999(b)) was extended to consider operation on hydrogen. The effects of changes in operating conditions, including a very wide range of variations in equivalence ratio on the onset of knock and its intensity, combustion duration, power, efficiency and operational limits were investigated. The results of this predictive approach were shown to validate well against corresponding experimental results of our own and those of others, obtained mostly in a variable compression ratio CFR engine. On this basis, the effects of changes in some of the key operational engine variables, such as compression ratio, intake temperature and spark timing are presented and discussed. Some guidelines for superior knock free-operation of engines on hydrogen are made also.
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Adgulkar, Dinesh D., N. V. Deshpande, S. B. Thombre i I. K. Chopde. "3D CFD Simulations of Hydrogen Fuelled Spark Ignition Engine". W ASME 2008 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ices2008-1649.

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By supporting hydrogen as an alternative fuel to the conventional fuel i.e. gasoline, new era of renewable and carbon neutral energy resources can be introduced. Hence, development of hydrogen fuelled internal combustion engine for improved power density and less emission of NOx has become today’s need and researchers are continuously extending their efforts in the improvement of hydrogen fuelled internal combustion engine. In this work, three dimensional CFD simulations were performed using CFD code (AVL FIRE) for premixed combustion of hydrogen. The simplified 3D geometry of engine with single valve i.e. inlet valve was considered for the simulation. Various combustion models for spark ignition for hydrogen i.e. Eddy Breakup model, Turbulent Flame Speed Closure Combustion Model, Coherent Flame model, Probability Density Function model were tested and validated with available simulation results. Results obtained in simulation indicate that the properties of hydrogen i.e. high flame speed, wide flammability limit, and high ignition temperature are among the main influencing factors for hydrogen combustion being different than that of gasoline. Different parameters i.e. spark advance angle (TDC to 40° before TDC in the step of 5°), rotational speed (1200 to 3000 rpm in the step of 300 rpm), equivalence ratio (0.5 to 1.2 in the step of 0.1), and compression ratio (8, 9 and 10) were used to simulate the combustion of hydrogen in spark ignition engine and to investigate their effects on the engine performance, which is in terms of pressure distribution, temperature distribution, species mass fraction, reaction progress variable and rate of heat release for complete cycle. The results of power output for hydrogen were also compared with that of gasoline. It has been observed that power output for hydrogen is almost 12–15% less than that of gasoline.
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Weyandt, Nathan. "Ignition of Underbody and Engine Compartment Hydrogen Releases". W SAE 2006 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2006. http://dx.doi.org/10.4271/2006-01-0127.

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Stenlåås, O., M. Christensen, R. Egnell, B. Johansson i F. Mauss. "Hydrogen as Homogeneous Charge Compression Ignition Engine Fuel". W 2004 SAE Fuels & Lubricants Meeting & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2004. http://dx.doi.org/10.4271/2004-01-1976.

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Pochet, Maxime, Ida Truedsson, Fabrice Foucher, Hervé Jeanmart i Francesco Contino. "Ammonia-Hydrogen Blends in Homogeneous-Charge Compression-Ignition Engine". W 13th International Conference on Engines & Vehicles. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2017. http://dx.doi.org/10.4271/2017-24-0087.

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Matham, V., K. Majmudar i K. Aung. "Numerical Simulations of a Hydrogen-Enriched Methane Fueled Spark Ignition Engine". W ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61047.

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The use of alternative fuels such as natural gas (methane) in spark-ignition (SI) engines is beneficial to the environment as it reduces emissions of pollutants such as NOx from these engines with slight penalty on the performance. This paper investigated the use of methane and hydrogen/methane mixtures in an SI engine by numerical simulations. The numerical simulations were based on the models of finite heat release, cylinder heat transfer, pumping losses, and friction losses. Simulations were carried out to evaluate the effects of compression ratio, equivalence ratio, ignition timing, and engine speed on the performance of the SI engine. The results showed that the current model could satisfactorily predict the performance of an SI engine fueled by gaseous fuels.
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Raporty organizacyjne na temat "Ignition engine; Hydrogen"

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Dhanasekaran, Chinnathambi, i Gabriel Mohan Kumar. Hydrogen Gas in Diesel Engine using DEE as Ignition Source. Warrendale, PA: SAE International, październik 2012. http://dx.doi.org/10.4271/2012-32-0013.

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Sakurai, Yoshihito, i Teruo Suzuki. Effect of Hydrogen and Gasoline-Mixed Combustion on Spark Ignition Engine. Warrendale, PA: SAE International, wrzesień 2005. http://dx.doi.org/10.4271/2005-08-0503.

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Olsen, Daniel, i Azer Yalin. L52360 NOx Reduction Through Improved Precombustion Chamber Design. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), grudzień 2018. http://dx.doi.org/10.55274/r0011536.

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several objectives were Several objectives were completed. First, a literature review was performed to assess the current technological state of prechambers. This includes state of the art design, reliability surveys, and proven prechamber design criteria. This is an enabling tool for developing new prechamber concepts for year 2 of the project. The prioritized concepts are (in order): - Improved prechamber geometry - apply high speed engine prechamber design and scale up for large bore engines. - Adiabatic prechamber - traditional prechamber will ceramic lining to reduce heat transfer to the prechamber cooling jacket - Natural Gas Reforming - reform prechamber natural gas (roughly 3% of total engine fueling) into CO and hydrogen for low emission, high flame speed ignition. - Micro Prechamber Geometry - non-fueled and fueled micro prechambers for igniting lean engine mixtures with low NOx contribution on engine out emissions (2 concepts). - Develop diagnostic tools to evaluate the performance of prechamber concepts. The tools developed were combustion visualization utilizing high speed cameras, heat release analysis, and spectroscopy.
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Pratapas, John, Daniel Mather i Anton Kozlovsky. Evaluation of Technical Feasibility of Homogeneous Charge Compression Ignition (HCCI) Engine Fueled with Hydrogen, Natural Gas, and DME. Office of Scientific and Technical Information (OSTI), marzec 2013. http://dx.doi.org/10.2172/1132559.

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John Pratapas, Daniel Mather i Anton Kozlovsky. Evaluation of Technical Feasibility of Homogeneous Charge Compression Ignition (HCCI) Engine Fueled with Hydrogen, Natural Gas, and DME. Office of Scientific and Technical Information (OSTI), marzec 2007. http://dx.doi.org/10.2172/939579.

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Inoue, Taisuke, Hitoshi Nakano, Kenjio Nakagawa, Kimitaka Yamane, Yasuo Takagi i Tetsuya Ohira. Experimental Study on Application of Hydrogen Gas Direct Injection at High Pressure Into a Small Displacement Spark Ignition Engine. Warrendale, PA: SAE International, maj 2005. http://dx.doi.org/10.4271/2005-08-0275.

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