Download or read book Preflame Reactions in Diesel Engines written by Gordon Harry Grigg and published by . This book was released on 1955 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preflame Reactions in Diesel Engines written by William Donald Reid and published by . This book was released on 1952 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preflame Reactions in Diesel Engines written by William Ewart Malpas and published by . This book was released on 1950 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Preflame Reactions and Flame Propagation in Direct Injection Diesel Enginees written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was to investigate (invisible) preflame reactions taking place in a direct-injection compression ignition (DI-CI) engine during the ignition delay period and their effects on subsequent (visible) combustion reactions. The investigation was focused on the subject for an engine equipped with a high-pressure injection (HPI) unit in order to support the development of high-power-output Diesel engines. The use of HPZ was found to facilitate more air utilization in a DI-CI engine even operated with intake air at unusually high temperatures (e.g., encountered in uncooled engines). In order to achieve these goals, several new research methods were developed-advanced for the study, including Rutgers or Super Imaging System (SIS), spectrometric methods, and Rutgers Animation Program. The tools were employed on an optical single-cylinder Cummins 903 engine. Among the significant results in system development is that the basic methods for high-speed imaging achievable at consecutive cycles, which shed some new insight into complex in-cylinder phenomena. The new research methods developed under the present ARO study permits observation of timed global pictures of preflame propagation under various engine-fuel conditions. New findings of the study include that the fuel injected into the cylinder immediately commences to chemically react, unlike the previous thought that there is a physical delay proceeding actual chemical reactions. The reactions involved during the preflame reactions appear to be low-temperature kinetics controlled processes to affect the onset of visible-ray flame formation and combustion reactions. The preflame reaction species were found rapidly consumed as soon as the heat-releasing flame propagation took place.
Download or read book A Hot motored Technique for Studying Pre flame Reactions in Dual injection Diesel Engines written by John Henry Shipinski and published by . This book was released on 1963 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fuel Effects on Diesel Combustion Processes written by and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The crank angle locations for the first occurrences of several main combustion events in a Diesel engine were investigated for varied fuel parameters. The events studied include: preflame reactions; premixed flame propagation; start of pressure rise; maximum rate of pressure rise (dp/dt); and peak cylinder pressure. The fuels employed in the study were in two groups: (1) Base fuel-1 and derivatives prepared by mixing it with small doses of a cetane number (CN) enhancing additive; and (2) Base fuel-2 and those made by adding different amounts of bio-Diesel fuel. The experiment was performed by using a single-cylinder direct-injection (DI) Diesel engine equipped with an electronically controlled high-pressure fuel injection unit. The in-cylinder processes during the periods of ignition delay and combustion reaction were measured by using a high-speed multispectral infrared (IR) imaging system developed at Rutgers University. The other events were found from the pressure-time history. The purpose of using these fuels was to investigate: additive effects on the (invisible) preflame reaction and visible premixed flame development; flame behaviors of bio-Diesel fuels; CN effects on in-cylinder reactions; and others. There is some evidence that the formation of the visible flame kernels may not be directly related to the preflame reactions when the additive is used to increase CN. The reactions during the ignition delay of bio-Diesel fuels were rather unpredictable, therefore requiring additional investigation. Among the most indicative timelines for determining a fuel's CN were those of: the maximum dp/dt; the start of pressure rise; the first premixed flame; and the peak pressure. The timeline of maximum dp/dt seems to be most insensitive to the variation of injection timing. Some new findings are also reported in the paper.
Download or read book Chemistry of Diesel Fuels written by Chunsham Song and published by CRC Press. This book was released on 2020-08-08 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited work covers diesel fuel chemistry in a systematic fashion from initial fuel production to the tail pipe exhaust. The chapters are written by leading experts in the research areas of analytical characterization of diesel fuel, fuel production and refining, catalysis in fuel processing, pollution minimization and control, and diesel fuel additives.
Download or read book The Spray Impingement Theory of Ignition Delay in Small Swirl chamber Diesel Engines written by E. J. Ilmari Kurki-Suonio and published by . This book was released on 1965 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Researches on Preliminary Chemical Reactions in Spark Ignition Engines written by E. Muehlner and published by BiblioGov. This book was released on 2013-07 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical reactions can demonstrably occur in a fuel-air mixture compressed in the working cylinder of an Otto-cycle (spark ignition) internal-combustion engine even before the charge is ignited by the flame proceeding from the sparking plug. These are the so-called "prelinminary reactions" ("pre-flame" combustion or oxidation), and an exact knowledge of their characteristic development is of great importance for a correct appreciation of the phenomena of engine-knock (detonation), and consequently for its avoidance. Such reactions can be studied either in a working engine cylinder or in a combustion bomb. The first method necessitates a complicated experimental technique, while the second has the disadvantage of enabling only a single reaction to be studied at one time. Consequently, a new series of experiments was inaugurated, conducted in a motored (externally-driven) experimental engine of mixture-compression type, without ignition, the resulting preliminary reactions being detectable and measurable thermometrically.
Download or read book Preflame Reactions in Compression Ignition Engines a Macroscopic Study written by M. A. Kawakibi and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling Diesel Combustion written by P. A. Lakshminarayanan and published by Springer Science & Business Media. This book was released on 2010-03-03 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phenomenology of Diesel Combustion and Modeling Diesel is the most efficient combustion engine today and it plays an important role in transport of goods and passengers on land and on high seas. The emissions must be controlled as stipulated by the society without sacrificing the legendary fuel economy of the diesel engines. These important drivers caused innovations in diesel engineering like re-entrant combustion chambers in the piston, lower swirl support and high pressure injection, in turn reducing the ignition delay and hence the nitric oxides. The limits on emissions are being continually reduced. The- fore, the required accuracy of the models to predict the emissions and efficiency of the engines is high. The phenomenological combustion models based on physical and chemical description of the processes in the engine are practical to describe diesel engine combustion and to carry out parametric studies. This is because the injection process, which can be relatively well predicted, has the dominant effect on mixture formation and subsequent course of combustion. The need for improving these models by incorporating new developments in engine designs is explained in Chapter 2. With “model based control programs” used in the Electronic Control Units of the engines, phenomenological models are assuming more importance now because the detailed CFD based models are too slow to be handled by the Electronic Control Units. Experimental work is necessary to develop the basic understanding of the pr- esses.
Download or read book Ignition Points and Combustion Reactions in Diesel Engines written by Jenö Tausz and published by . This book was released on 1928 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ignition point measurement and ignition point test equipment is examined.
Download or read book Researches on Preliminary Chemical Reactions in Spark ignition Engines written by E. Mühlner and published by . This book was released on 1943 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical reactions can demonstrably occur in a fuel-air mixture compressed in the working cylinder of an Otto-cycle (spark ignition) internal-combustion engine even before the charge is ignited by the flame proceeding from the sparking plug. These are the so-called "preliminary reactions" ("pre-flame" combustion or oxidation), and an exact knowledge of their characteristic development is of great importance for a correct appreciation of the phenomena of engine-knock (detonation), and consequently for its avoidance. Such reactions can be studied either in a working engine cylinder or in a combustion bomb. The first method necessitates a complicated experimental technique, while the second has the disadvantage of enabling only a single reaction to be studied at one time. Consequently, a new series of experiments was inaugurated, conducted in a motored (externally-driven) experimental engine of mixture-compression type, without ignition, the resulting preliminary reactions being detectable and measurable thermometrically.
Download or read book Optimization Methods for the Mixture Formation and Combustion Process in Diesel Engines written by Jost Weber and published by Cuvillier Verlag. This book was released on 2008 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engine Combustion Instrumentation and Diagnostics written by Hua Zhao and published by SAE International. This book was released on 2001-01-30 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a complete description of instrumentation and in-cylinder measurement techniques for internal combustion engines. Written primarily for researchers and engineers involved in advanced research and development of internal combustion engines, the book provides an introduction to the instrumentation and experimental techniques, with particular emphasis on diagnostic techniques for in-cylinder measurements.
Download or read book Thermo and Fluid dynamic Processes in Diesel Engines written by James H.W. Whitelaw and published by Springer Science & Business Media. This book was released on 2002-01-11 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes versions of papers selected from those presented at the THIESEL 2000 Conference on Thermofluidynamic Processes in Diesel Engines, held at the Universidad Politecnica de Valencia, during the period of September th th 13 to 15 , 2000. The papers are grouped into seven thematic areas: State of the Art and Prospective, Fuels for Diesel Engines, Injection System and Spray Formation, Combustion and Pollutant Formation, Modelling, Experimental Techniques, and Air Management. These areas cover most of the technologies and research strategies that may allow Light Duty and Heavy Duty Diesel engines to comply with current and forthcoming emission standards, while maintaining or improving fuel consumption. The main objectives of the conference were to bring together ideas and experience from Industry and Universities to facilitate interchange of information and to promote discussion of future research and development needs. The technical papers emphasised the use diagnostic and simulation techniques and their relationship to engineering practice and the advancement of the Diesel engine. We hope that this approach, which proved to be successful at the Conference, is reflected in this volume. We thank all those who contributed to the success of the Conference, and particularly the members of the Advisory Committee who assessed abstracts and chaired many of the technical sessions. Weare also grateful to participants who presented their work or contributed to the many discussions. Finally, the Conference benefitted from financial support from the organisations listed below and we are glad to have this opportunity to record our gratitude.
Download or read book Effects of Preflame Reactions on the Detonability of Fuel Air Mixtures written by Milo Duncan Bell and published by . This book was released on 1962 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
