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Effect Of Engine Mistuning On Catalytic Converter Exhaust System Surface Temperature
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Book Synopsis Effect of Engine Mistuning on Catalytic Converter/exhaust System Surface Temperature by : Davis, Eryou & Associates Ltd
Download or read book Effect of Engine Mistuning on Catalytic Converter/exhaust System Surface Temperature written by Davis, Eryou & Associates Ltd and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalytic converter exhaust system temperature tests by : Robin T. Harrison
Download or read book Catalytic converter exhaust system temperature tests written by Robin T. Harrison and published by . This book was released on 1977 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalytic Converter Temperature Study by : California. Air Resources Board. Air Resources Laboratory
Download or read book Catalytic Converter Temperature Study written by California. Air Resources Board. Air Resources Laboratory and published by . This book was released on 1975 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Investigation of Wall Heat Conduction Effects in Catalytic Combustion Systems by : Michael Grimm
Download or read book Numerical Investigation of Wall Heat Conduction Effects in Catalytic Combustion Systems written by Michael Grimm and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Catalytic converters are used in a variety of applications ranging from low-temperature combustion for gas turbine applications to the removal of pollutants from engine exhaust flow. Catalytic converters currently used in industry consist of a ceramic monolithic plug. This monolithic plug has a honeycomb-like structure, and is comprised of many small cylindrical channels (tubes), the inner surfaces of which are covered with a reactive catalyst. Determining the effect of the thermal conductivity of the monolith ceramic material on the ignition, flame stability, and steady state combustion will provide a scientific foundation with regard to the selection of materials for the construction of catalytic monoliths. This effect is investigated in this study through numerical simulations. Two commonly used materials are compared: cordierite, a ceramic with a low thermal conductivity, and silicon carbide, a ceramic with a high thermal conductivity. Another issue that is critical to the design of a catalytic converter is the length of the monolith plug. The optimum length of a monolith tube is one that completely converts the incoming flow while utilizing the entire length of the catalytic coating. In practice, the length is adjusted by stacking monolith plugs end-to-end, though it is unclear how different the end-to-end plugs are when compared to a single continuous tube of the same length. This study numerically investigates the effects of this practice, with the goal to determine if a tube of length 2L exhibits the same behavior as two identical tube sections placed end-to-end, each of length L. The commercial CFD software CFD-ACE+TM was utilized to investigate the afore-stated issues. The inlet flow rates of the methane-air mixture and the fuel equivalence ratio (or fuel-air ratio) were treated as parameters. Only lean and stoichiometric mixtures were considered because in practice catalytic combustion is not performed with rich mixtures. Catalytic combustion of a methane-air mixture on a platinum catalyst was used as the candidate system because the chemistry of this system is well documented. The models were set up and tested in an order of increasing complexity to ensure steady progress in the research. Beginning with simple flow and heat transfer, the model was extended to include a single step combustion reaction, and finally a detailed reaction mechanism consisting of 24 surface reactions between 19 species. Both steady-state and transient simulations were conducted. The results show that thermal conductivity of the ceramic monolith has a large effect on ignition, flame stability, and steady state combustion. The ceramic material with a high thermal conductivity value, namely silicon carbide, produces a stable flame over a much wider range of inlet flow rates than the ceramic material with a low thermal conductivity value, namely cordierite. Over their respective ranges of ignition, for both silicon carbide and cordierite, the maximum temperature of the monolith tube is more or less the same, indicating that there is no effect of thermal conductivity on the maximum temperature. Therefore, a case can be made for using silicon carbide instead of cordierite to create catalytic monoliths capable of handling a wider variety of inlet flow rates. The results also show that the ignition and blowout limits vary significantly between split and continuous tubes at high inlet flow speeds when the monolith tube walls are constructed from materials with high thermal conductivity; in this case, silicon carbide. For high inlet flow speeds there are significant differences between split and continuous tubes for the high thermal conductivity material. For monolith tubes constructed from materials with low thermal conductivity, such as the case of cordierite, there are no significant differences between split and continuous tubes over the entire flammability range. Additionally, for high thermal conductivity materials with low inlet flow speeds and low thermal conductivity materials for all inlet flow speeds over the range of ignition, the fuel conversion percentage does not significantly change and therefore, appears to be independent of inlet flow speed. These results imply that axial heat conduction, or lack thereof due to thermal contact resistance from an air-gap between the end-to-end monolith plugs, through the walls of the monolith results in thermal non-equilibrium between the solid and fluid phase, and subsequently affects ignition and flame stability in catalytic combustion.
Book Synopsis Electronic Warfare and Radar Systems Engineering Handbook by :
Download or read book Electronic Warfare and Radar Systems Engineering Handbook written by and published by . This book was released on 1997-04-01 with total page 605 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is designed to aid electronic warfare and radar systems engineers in making general estimations regarding capabilities of systems. It is not intended as a detailed designer's guide, due to space limitations. Portions of the handbook and future changes will be posted on an internet link.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Vibration Engineering and Technology of Machinery by : José Manoel Balthazar
Download or read book Vibration Engineering and Technology of Machinery written by José Manoel Balthazar and published by Springer Nature. This book was released on 2021-03-03 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers the latest advances, innovations and applications in the field of vibration and technology of machinery, as presented by leading international researchers and engineers at the XV International Conference on Vibration Engineering and Technology of Machinery (VETOMAC), held in Curitiba, Brazil on November 10-15, 2019. Topics include concepts and methods in dynamics, dynamics of mechanical and structural systems, dynamics and control, condition monitoring, machinery and structural dynamics, rotor dynamics, experimental techniques, finite element model updating, industrial case studies, vibration control and energy harvesting, and MEMS. The contributions, which were selected through a rigorous international peer-review process, share exciting ideas that will spur novel research directions and foster new multidisciplinary collaborations.
Book Synopsis Compressor Performance by : Theodore Gresh
Download or read book Compressor Performance written by Theodore Gresh and published by Newnes. This book was released on 2001-05-17 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compressor Performance is a reference book and CD-ROM for compressor design engineers and compressor maintenance engineers, as well as engineering students. The book covers the full spectrum of information needed for an individual to select, operate, test and maintain axial or centrifugal compressors. It includes basic aerodynamic theory to provide the user with the "how's" and "why's" of compressor design. Maintenance engineers will especially appreciate the troubleshooting guidelines offered. Includes many example problems and reference data such as gas properties and flow meter calculations to enable easy analysis of compressor performance in practice. Includes companion CD with computer programs.M. Theodore Gresh has been with the Elliot Company in Jeannette, Pennsylvania, since 1975, initially working on the mechanical and aerodynamic design and application of centrifugal compressors. Unrivalled coverage of the theory and practical use of all kinds of compressors in industrial use from an industry-leading company sourceComplete subject reference and learning resource in one stop, suitable for newly graduated engineers and experienced professional reference useIncludes companion CD-ROM
Book Synopsis Digital Signal Processing by : Jonathan Y. Stein
Download or read book Digital Signal Processing written by Jonathan Y. Stein and published by Wiley-Interscience. This book was released on 2000-10-09 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get a working knowledge of digital signal processing for computer science applications The field of digital signal processing (DSP) is rapidly exploding, yet most books on the subject do not reflect the real world of algorithm development, coding for applications, and software engineering. This important new work fills the gap in the field, providing computer professionals with a comprehensive introduction to those aspects of DSP essential for working on today's cutting-edge applications in speech compression and recognition and modem design. The author walks readers through a variety of advanced topics, clearly demonstrating how even such areas as spectral analysis, adaptive and nonlinear filtering, or communications and speech signal processing can be made readily accessible through clear presentations and a practical hands-on approach. In a light, reader-friendly style, Digital Signal Processing: A Computer Science Perspective provides: * A unified treatment of the theory and practice of DSP at a level sufficient for exploring the contemporary professional literature * Thorough coverage of the fundamental algorithms and structures needed for designing and coding DSP applications in a high level language * Detailed explanations of the principles of digital signal processors that will allow readers to investigate assembly languages of specific processors * A review of special algorithms used in several important areas of DSP, including speech compression/recognition and digital communications * More than 200 illustrations as well as an appendix containing the essential mathematical background
Book Synopsis Fluid Mechanics and Turbomachinery by : Bijay K Sultanian
Download or read book Fluid Mechanics and Turbomachinery written by Bijay K Sultanian and published by CRC Press. This book was released on 2021-07-21 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes over 250 solved problems to supplement graduate-level courses in fluid mechanics and turbomachinery. Enables students to practice applying key concepts of fluid mechanics and the governing conservation laws to solve real-world problems. Uses the physics-first approach, allowing for a good understanding of the problem physics and the results obtained. Covers problems on flowpath aerodynamics design. Covers problems on secondary air systems modeling of gas turbines.
Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer. This book was released on 1985-03 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 28 (thesis year 1 983) a total of 10,661 theses titles from 26 Canadian and 197 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 28 reports theses submitted in-1983, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Download or read book Hybrid Machining written by Xichun Luo and published by Academic Press. This book was released on 2018-06-27 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid Machining: Theory, Methods, and Case Studies covers the scientific fundamentals, techniques, applications and real-world descriptions of emerging hybrid machining technology. This field is advancing rapidly in industrial and academic contexts, creating a great need for the fundamental and technical guidance that this book provides. The book includes discussions of basic concepts, process design principles, standard hybrid machining processes, multi-scale modeling approaches, design, on-machine metrology and work handling systems. Readers interested in manufacturing systems, product design or machining technology will find this one-stop guide to hybrid machining the ideal reference. Includes tables of recommended processing parameters for key engineering materials/products for each hybrid machining process Provides case studies covering real industrial applications Explains how to use multiscale modeling for hybrid machining
Download or read book The VHF/UHF DX Book written by Ian White and published by . This book was released on 1992 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assembling a VHF/UHF amateur radio station -- VHF/UHF propagation -- Operating techniques -- Transmitters, power amplifiers & EMC -- Antennas -- Designs for VHF and UHF transverters -- Power supplies -- Station control -- Test equipment, etc.
Book Synopsis Principles of Musical Acoustics by : William M. Hartmann
Download or read book Principles of Musical Acoustics written by William M. Hartmann and published by Springer Science & Business Media. This book was released on 2013-07-26 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Musical Acoustics focuses on the basic principles in the science and technology of music. Musical examples and specific musical instruments demonstrate the principles. The book begins with a study of vibrations and waves, in that order. These topics constitute the basic physical properties of sound, one of two pillars supporting the science of musical acoustics. The second pillar is the human element, the physiological and psychological aspects of acoustical science. The perceptual topics include loudness, pitch, tone color, and localization of sound. With these two pillars in place, it is possible to go in a variety of directions. The book treats in turn, the topics of room acoustics, audio both analog and digital, broadcasting, and speech. It ends with chapters on the traditional musical instruments, organized by family. The mathematical level of this book assumes that the reader is familiar with elementary algebra. Trigonometric functions, logarithms and powers also appear in the book, but computational techniques are included as these concepts are introduced, and there is further technical help in appendices.
Book Synopsis Precision Measurement and Fundamental Constants; Proceedings by : Barry N. Taylor
Download or read book Precision Measurement and Fundamental Constants; Proceedings written by Barry N. Taylor and published by . This book was released on 1971 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Steam Turbines in Combined Cycles by :
Download or read book Steam Turbines in Combined Cycles written by and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lasers and Masers written by and published by . This book was released on 1962 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
