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Computational Study Of Under Expanded Jets Mixture Formation And Combustion In Direct Injection Spark Ignition Hydrogen Engines
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Book Synopsis Computational Study of Under-expanded Jets, Mixture Formation and Combustion in Direct-injection Spark-ignition Hydrogen Engines by : Arash Hamzehloo
Download or read book Computational Study of Under-expanded Jets, Mixture Formation and Combustion in Direct-injection Spark-ignition Hydrogen Engines written by Arash Hamzehloo and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Study of Under-expanded Jets, Mixture Formation and Combustion in Direct-injection Spark-ignition Hydrogen Engines by : A. Hamzehloo
Download or read book Computational Study of Under-expanded Jets, Mixture Formation and Combustion in Direct-injection Spark-ignition Hydrogen Engines written by A. Hamzehloo and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Analysis of Mixture Formation and Combustion in a Hydrogen Direct-injection Internal Combustion Engine by : Udo Gerke
Download or read book Numerical Analysis of Mixture Formation and Combustion in a Hydrogen Direct-injection Internal Combustion Engine written by Udo Gerke and published by Cuvillier Verlag. This book was released on 2007 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulation of a Hydrogen Internal Combustion Engine with Cryogenic Mixture Formation by : Simon Ellgas
Download or read book Simulation of a Hydrogen Internal Combustion Engine with Cryogenic Mixture Formation written by Simon Ellgas and published by Cuvillier Verlag. This book was released on 2008 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogen-air Mixing Evaluation in Reciprocating Engines by : L. G. Dodge
Download or read book Hydrogen-air Mixing Evaluation in Reciprocating Engines written by L. G. Dodge and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a computational study of fuel-air mixing in a hydrogen jet using a spark-ignited, hydrogen-fueled engine. The computational results were compared with experimental measurements being conducted at the Musashi Institute of Technology in Tokyo, Japan. The hydrogen-air mixing work was directed at understanding the extreme sensitivity of ignition to spark pluglocation and spark timing in direct-injected, hydrogen-fueled engines.
Book Synopsis Handbook of Hydrogen Energy by : S.A. Sherif
Download or read book Handbook of Hydrogen Energy written by S.A. Sherif and published by CRC Press. This book was released on 2014-07-29 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt: Can hydrogen and electricity supply all of the world’s energy needs? Handbook of Hydrogen Energy thoroughly explores the notion of a hydrogen economy and addresses this question. The handbook considers hydrogen and electricity as a permanent energy system and provides factual information based on science. The text focuses on a large cross section of applications such as fuel cells and catalytic combustion of hydrogen. The book also includes information on inversion curves, physical and thermodynamic tables, and properties of storage materials, data on specific heats, and compressibility and temperature–entropy charts and more. Analyzes the principles of hydrogen energy production, storage, and utilization Examines electrolysis, thermolysis, photolysis, thermochemical cycles, and production from biomass and other hydrogen production methods Covers all modes of hydrogen storage: gaseous, liquid, slush, and metal hydride storage Handbook of Hydrogen Energy serves as a resource for graduate students, as well as a reference for energy and environmental engineers and scientists.
Book Synopsis Hydrogen-air Mixing Evaluation in Reciprocating Engines by :
Download or read book Hydrogen-air Mixing Evaluation in Reciprocating Engines written by and published by . This book was released on 1994 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a computational study of fuel-air mixing in a hydrogen jet using a spark-ignited, hydrogen-fueled engine. The computational results were compared with experimental measurement being conducted at the Musashi Institute of Technology in Tokyo, Japan. The hydrogen-air mixing work was directed at understanding the extreme sensitivity of ignition to spark plug location and spark timing in direct-injected, hydrogen-fueled engines.
Book Synopsis Automotive Spark-Ignited Direct-Injection Gasoline Engines by : F. Zhao
Download or read book Automotive Spark-Ignited Direct-Injection Gasoline Engines written by F. Zhao and published by Elsevier. This book was released on 2000-02-08 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of fuel injection, spray atomization and vaporization, charge cooling, mixture preparation and the control of in-cylinder air motion are all being actively researched and this work is reviewed in detail and analyzed. The new technologies such as high-pressure, common-rail, gasoline injection systems and swirl-atomizing gasoline fuel injections are discussed in detail, as these technologies, along with computer control capabilities, have enabled the current new examination of an old objective; the direct-injection, stratified-charge (DISC), gasoline engine. The prior work on DISC engines that is relevant to current GDI engine development is also reviewed and discussed. The fuel economy and emission data for actual engine configurations have been obtained and assembled for all of the available GDI literature, and are reviewed and discussed in detail. The types of GDI engines are arranged in four classifications of decreasing complexity, and the advantages and disadvantages of each class are noted and explained. Emphasis is placed upon consensus trends and conclusions that are evident when taken as a whole; thus the GDI researcher is informed regarding the degree to which engine volumetric efficiency and compression ratio can be increased under optimized conditions, and as to the extent to which unburned hydrocarbon (UBHC), NOx and particulate emissions can be minimized for specific combustion strategies. The critical area of GDI fuel injector deposits and the associated effect on spray geometry and engine performance degradation are reviewed, and important system guidelines for minimizing deposition rates and deposit effects are presented. The capabilities and limitations of emission control techniques and after treatment hardware are reviewed in depth, and a compilation and discussion of areas of consensus on attaining European, Japanese and North American emission standards presented. All known research, prototype and production GDI engines worldwide are reviewed as to performance, emissions and fuel economy advantages, and for areas requiring further development. The engine schematics, control diagrams and specifications are compiled, and the emission control strategies are illustrated and discussed. The influence of lean-NOx catalysts on the development of late-injection, stratified-charge GDI engines is reviewed, and the relative merits of lean-burn, homogeneous, direct-injection engines as an option requiring less control complexity are analyzed.
Book Synopsis Scramjets by : Mostafa Barzegar Gerdroodbary
Download or read book Scramjets written by Mostafa Barzegar Gerdroodbary and published by Butterworth-Heinemann. This book was released on 2020-07-21 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scramjet engines are a type of jet engine and rely on the combustion of fuel and an oxidizer to produce thrust. While scramjets are conceptually simple, actual implementation is limited by extreme technical challenges. Hypersonic flight within the atmosphere generates immense drag, and temperatures found on the aircraft and within the engine can be much greater than that of the surrounding air. Maintaining combustion in the supersonic flow presents additional challenges, as the fuel must be injected, mixed, ignited, and burned within milliseconds. Fuel mixing, along with the configuration and positioning of the injectors and the boundary conditions, play a key role in combustion efficiency. Scramjets: Fuel Mixing and Injection Systems discusses how fuel mixing efficiency and the advantage of injection systems can enhance the performance of the scramjets. The book begins with the introduction of the supersonic combustion chamber and explains the main parameters on the mixing rate. The configuration of scramjets is then introduced with special emphasis on the main effective parameters on the mixing of fuel inside the scramjets. In addition, basic concepts and principles on the mixing rate and fuel distribution within scramjets are presented. Main effective parameters such as range of fuel concentration for the efficient combustion, pressure of fuel jet and various arrangement of jet injections are also explained. This book is for aeronautical and mechanical engineers as well as those working in supersonic combustion who need to know the effects of compressibility on combustion, of shocks on mixing and on chemical reactions, and vorticity on the flame anchoring. Explains the main applicable approaches for enhancement of supersonic combustion engines and the new techniques of fuel injection Shows how the interaction of main air stream with fuel injections can develop the mixing inside the scramjets Presents results of numerical simulations and how they can be used for the development of the combustion engines
Book Synopsis Injection and Ignition Characteristics of Gaseous Fuel Jets for Low-emission Engines by : Hengameh Delbari
Download or read book Injection and Ignition Characteristics of Gaseous Fuel Jets for Low-emission Engines written by Hengameh Delbari and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application of renewable natural gas (RNG) and hydrogen (H2) in internal combustion engines with a direct injection (DI) configuration leads to improved thermal efficiency and reduced CO2. Because of the high nozzle pressure ratios (NPR) relevant to DI, typically an under-expanded jet is formed past the nozzle exit. Transient jet development affects ignition and combustion properties, and consequently performance and emissions of the engines significantly. In this research, the effects of parameters including injection pressure, gas type and composition, and back pressure on the characteristics of the gaseous jets have been experimentally investigated. The ignition properties of these jets have been studied using a hot surface. Results indicate that the NPR has the most significant effect on the jets' penetration rate. Additionally, adding H2 to natural gas contributes considerably to improve ignition properties of the gaseous mixture. The results are of value to support future modeling and engine development.
Book Synopsis Mixture Formation in Direct Injection Hydrogen Engines by :
Download or read book Mixture Formation in Direct Injection Hydrogen Engines written by and published by . This book was released on 2011 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Combustion Technologies for Low Carbon Emissions by : Jun Li
Download or read book Advanced Combustion Technologies for Low Carbon Emissions written by Jun Li and published by Frontiers Media SA. This book was released on 2023-07-10 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of Mixture Formation Processes in a Natural Gas Powered Direct Injection Spark Ignition Engine by : Xinyi Liu
Download or read book An Investigation of Mixture Formation Processes in a Natural Gas Powered Direct Injection Spark Ignition Engine written by Xinyi Liu and published by . This book was released on 2000 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Study on Mixture Formation Characteristics in a Direct-injection Hydrogen Engine by : Sujith Sukumaran
Download or read book Numerical Study on Mixture Formation Characteristics in a Direct-injection Hydrogen Engine written by Sujith Sukumaran and published by . This book was released on 2010 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combustion and Pollutant Characteristics of IC Engines Fueled with Hydrogen and Diesel/hydrogen Mixtures Using 3D Computations with Detailed Chemical Kinetics by : Hassan A. Khairallah
Download or read book Combustion and Pollutant Characteristics of IC Engines Fueled with Hydrogen and Diesel/hydrogen Mixtures Using 3D Computations with Detailed Chemical Kinetics written by Hassan A. Khairallah and published by . This book was released on 2015 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In order to develop design guidelines for optimum operations of internal combustion engines fueled with alternative fuels, a comprehensive understanding combustion behavior and the pollutant formation inside the cylinder are needed. The first part of this thesis aimed to numerically study the engine performance and in-cylinder pollutant formation in a spark ignition engine fueled with hydrogen. Advanced simulations were performed using multi- dimensional software AVL FIRE coupled with CHEMKIN. The detailed chemical reactions with 29 steps of hydrogen oxidation with additional nitrogen oxidation reactions were also employed. Formation rates of nitrogen oxides (NO[subscript x]) within the engine were accurately predicted using the extended Zeldovich mechanism with parameters adjusted for a carbon-free fuel. The computational results were first validated against experimental results with different equivalence ratios and then employed to examine a spark-ignition engine fueled with hydrogen under different operating conditions. Strategies that could have significant effects on the engine performance and emissions, such as exhaust gas recirculation (EGR) and ignition timing were also investigated. Furthermore, the maximization of engine power and minimization of NO[subscript x] emissions were considered as conflicting objectives for preliminary optimization. Finally, a skeletal reaction mechanism was developed to include the reaction kinetics of diesel and hydrogen fuel mixtures to investigate in-cylinder combustion processes of such a dual fuel compression-ignition engine. The model was then employed to examine the effects of exhaust gas recirculation (EGR) and N2 dilution on NO[subscript x] emissions"--Abstract, page iv.
Book Synopsis Study of Fuel Air Mixture Formation Process in Spark Ignition Engines by : Gang Chen
Download or read book Study of Fuel Air Mixture Formation Process in Spark Ignition Engines written by Gang Chen and published by . This book was released on 1995 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics of Turbulent Jet Ignition by : Sayan Biswas
Download or read book Physics of Turbulent Jet Ignition written by Sayan Biswas and published by Springer. This book was released on 2018-05-03 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on developing strategies for ultra-lean combustion of natural gas and hydrogen, and contributes to the research on extending the lean flammability limit of hydrogen and air using a hot supersonic jet. The author addresses experimental methods, data analysis techniques, and results throughout each chapter and: Explains the fundamental mechanisms behind turbulent hot jet ignition using non-dimensional analysis Explores ignition characteristics by impinging hot jet and multiple jets in relation to better controllability and lean combustion Explores how different instability modes interact with the acoustic modes of the combustion chamber. This book provides a potential answer to some of the issues that arise from lean engine operation, such as poor ignition, engine misfire, cycle-to-cycle variability, combustion instability, reduction in efficiency, and an increase in unburned hydrocarbon emissions. This thesis was submitted to and approved by Purdue University.
