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Books > Professional & Technical > Mechanical engineering & materials > Mechanical engineering > Engines & power transmission > General
Ohne grossen mathematischen Aufwand, unter Nutzung der Kennlinien (Black-box-Prinzip) vermittelt dieser UEberblick das physikalische Verstandnis fur die zahlreichen Bauarten und Varianten. Mit Hilfe des Buches, das viele praktische Einbaubeispiele enthalt, findet der Anwender aus der Menge der Moeglichkeiten die beste Loesung fur sein Problem.
This book presents the design methodology and electrical diagrams of symmetrical six-phase windings, the main elements of the six-phase that are being developed to help meet the demand for high power electric drive systems that are resilient and energy efficient. Chapters are fully illustrated and include detailed tables that provide a comprehensive analysis of energy exchange processes ranging from electrical to magnetic and reveal the advantages of such windings against analogical three-phase windings.
Seit der ersten Auflage dieses Buches hat der Computer Einzug gehalten und die Auslegung und Konstruktion auch der Umlaufgetriebe weitgehend erleichtert. Da- bei erwies sich das damals gewahlte System der einheitlichen Bezeichnungen der Wellen als optimal, weil es die Berechnung der Betriebsdaten gegebener oder ge- suchter einfacher oder zusammengesetzter Planetengetriebe unabhangig von deren Bauart mit ein und demselben Rechenprogramm ermoeglicht. Auch die Zusammenfassung verschiedener Getriebe mit der gleichen speziellen Funktion zu einheitlich berechenbaren Typen hat sich bewahrt, denn diese koennen nun mit einheitlichen Rechenprogrammen analysiert oder ausgelegt werden. In der vorliegenden neu bearbeiteten und erweiterten zweiten deutschen Aufla- ge wurde die leichte Programmierbarkeit durch ubersichtlich dargestellte Berech- nung mit einfachen Formeln besonders beachtet. Dabei werden bei der Auslegung von Getrieben -z. B. fur variable UEbersetzungen -zuerst nur die erforderliche oder gegebenenfalls mehrere geeignete, kennzeichnenden UEbersetzungen" ermittelt und erst dann aus den vielen moeglichen, kinematisch gleichwertigen Getrieben" das konstruktiv gunstigste ausgewahlt. Die Reihe der dargestellten Varianten praktisch ausgefuhrter alterer und neue- rer Anwendungen von Planetengetrieben wurde erweitert, um die Vielfalt der An- wendungsmoeglichkeiten zu zeigen und Inspirationen fur neue Anwendungen zu fordern. Statt des Index 0 (io, 110) fur Standgetriebe werden jetzt zur sicheren Unter- scheidung der Leistungsflusse, z.B. bei Selbsthemmung, stets die Indizes 12 bzw. 21 (i12, i2lo 1112, 1121) benutzt. Dagegen konnte auf die besondere Bezeichnung m statt n fur die Drehzahlen mehrlaufiger Getriebe ohne Nachteil verzichtet werden. Die strenge Unterscheidung von Drehzahlverhaltnissen k zwangloser Getriebe von der UEbersetzung i zwanglaufiger Getriebe ist jedoch weiterhin unverzichtbar.
This book introduces and illustrates modeling, sensing, and control methods for analyzing, designing, and developing spherical motors. It systematically presents models for establishing the relationships among the magnetic fields, position/orientation and force/torque, while also providing time-efficient solutions to assist researchers and engineers in studying and developing these motors. In order to take full advantage of spherical motors' compact structure in practical applications, sensing and control methods that utilize their magnetic fields and eliminate the need to install external sensors for feedback are proposed. Further, the book investigates for the first time spherical motors' force/torque manipulation capability, and proposes algorithms enabling the ball-joint-like end-effector for haptic use based on these motors' hybrid position/force actuation modes. While systematically presenting approaches to their design, sensing and control, the book also provides many examples illustrating the implementation issues readers may encounter.
For those who wish to broaden their knowledge of jet engine technology and associated subjects. Jet Engines covers turbojet, turboprop and turbofan designs and is applicable to civilian and military usage. Starting with an overview of the main design types and fundamentals, it goes on to look at topics such as air intakes, compressors, and exhaust systems. Throughout the book, examples of the engine-to-aircraft relationship are used to follow the application of certain engine types to operational requirements. Why was the Pratt & Whitney TF33-P-7 turbofan selected to power the mighty Lockheed C-141 StarLifter? Why should one airline flying Boeing 747-400s select the Rolls-Royce RB211 turbofan and another select General Electric's CF6-80C2? Clearly it is not only aircraft types but also their operational requirements that dictate the answers - and that is why there is such a wide variety of gas turbine engines in production today.
This book contains the research report of the DFG Research Unit FOR 1845 (2014-2020) of the Universities of Bremen and Hannover. The thematic focus lies on speeding up ultra-precision machining technology by following a holistic approach to high-performance cutting. This includes ultra-precision milling at high spindle speeds (>10000 rpm), precision tool setting mechanisms for multi-cutting-edge diamond milling tools, magnetic levitation technology for high velocity feed axes, and dedicated control strategies for error identification and compensation at high speeds. Furthermore, automation and measurement aspects of the machine setup process especially for precision balancing of the spindle rotors are presented. Finally, it is demonstrated that how the developed technologies may be integrated into a common machine tool setup. The target audience primarily comprises research experts and practitioners in production engineering, but the book may also be of interest to graduate students alike.
Now in paperback, the life and legacy of the much-overlooked yet highly influential Robert Goddard--the brilliant, eccentric, and controversial pioneer of the space age. More famous in his day than Einstein or Edison, the troubled, solitary genius Robert H. Goddard was the American father of rocketry and space flight, launching the world's first liquid-fuel rockets and the first powered vehicles to break the sound barrier. Supported by Charles Lindbergh and Harry Guggenheim, he devised the methods that carried men to the moon. Today, no rocket or jet plane can fly without his inventions. Yet Goddard is the "forgotten man" of the Space Age. After the Germans launched the V-2 missiles of World War II, the American government usurped his 214 patents and suppressed his contributions in the name of national security, until it was forced to pay one million dollars for patent infringement. Goddard became famous again; monuments and medals raining upon his memory. But his renewed fame soon faded, and Goddard's pivotal role in launching the Space Age has been largely forgotten--until now.
Die Wirtschaftlichkeit der industriellen Produktion hangt vorwiegend von der richtigen Auswahl der Fertigungsverfahren ab. Dabei mussen die an Produktionsplanung, Fertigungstechnik und Konstruktion beteiligten Akteur*innen ausreichende Kenntnisse uber die aktuellen technischen Entwicklungen haben. Dieses Lehrbuch soll bei der Vermittlung dieser Kenntnisse die Brucke schlagen zwischen theoretischen Erlauterungen und einer praxisorientierten Darstellungsweise und stellt dabei ein Standardwerk in Ausbildung und Praxis dar. Es werden die wichtigsten Fertigungsverfahren aus den vier grossen Bereichen Giessen, Umformen, Trennen und Fugen behandelt, wobei eine hohe Anzahl an Abbildungen das Verstandnis fur den Lehrstoff unterstutzt. In der vorliegenden 13. Auflage des Werkes wurden unter anderem der Abschnitt Fugen durch Umformen erweitert und das Laserstrahlschweissen aktualisiert. Die additive Fertigung gewinnt neben der Prototypenherstellung auch in der Serienproduktion immer weiter an Bedeutung und wurde daher deutlich ausgeweitet. Konstrukteur*innen erhalten daruber hinaus nutzliche Hinweise zur zweckmassigen konstruktiven und fertigungstechnischen Gestaltung einzelner Werkstucke in den unterschiedlichen Kapiteln. Digitales Zusatzmaterial wie Videos und PowerPoint-Prasentationen, welches uber Links abrufbar ist, rundet die Wissensvermittlung auf anschauliche Weise ab.
Introduction to Rocket Science and Engineering, Second Edition, presents the history and basics of rocket science, and examines design, experimentation, testing, and applications. Exploring how rockets work, the book covers the concepts of thrust, momentum, impulse, and the rocket equation, along with the rocket engine, its components, and the physics involved in the generation of the propulsive force. The text also presents several different types of rocket engines and discusses the testing of rocket components, subsystems, systems, and complete products. The final chapter stresses the importance for rocket scientists and engineers to creatively deal with the complexities of rocketry.
Die abnehmenden sachleistungsorientierten Wettbewerbsdifferenzierungen fuhren im Maschinen- und Anlagenbau zum verstarkten Ausbau produktbezogener Dienstleistungen. Zum einen werden die Sachguter durch deren steigende K- plexitat immer dienstleistungsintensiver, zum anderen werden Dienstleistungen nicht langer als add-on zum Sachgut betrachtet, sondern erobern zunehmend die fuhrende Rolle im Systemgeschaft. Es gilt somit, die Primarprodukte des Masc- nenbaus durch vor- und nachgelagerte Dienstleistungen abzusichern. Dabei taucht immer haufiger die Forderung nach sogenannten Full-Service Angeboten auf, die neben Planung, Finanzierung, Inbetriebnahme und Rucknahme auch Verfugb- keitsgarantien durch die UEbernahme der Instandhaltung und Wartung sowie den Anlagenbetrieb umfassen koennen. Diese kundenseitigen Forderungen erklaren sich aus der wirtschaftlichen Notwendigkeit, nicht wertschoepfungsrelevante P- zesse auszulagern bzw. sich auf Kernkompetenzen zu fokussieren. Daruber hinaus eroeffnet die Nutzung multimedialer Internet-Techniken die globale Erschliessung dieser Dienstleistungspotentiale. Zukunftig wird man dem Kundenwunsch entsprechen mussen, pro produzierter Einheit oder pro Produktionsstunde der Maschine abzurechnen. Dabei definiert der Kunde nur noch die Kosten, Stuckzahlen und die Qualitatsstandards der auf der Anlage zu produzierenden Guter. Die technologische Maschinenauslegung verbleibt vollstandig in der Hand des Maschinenlieferanten ohne kundenseitige Auflagen. Dieses Geschaftsmodell kann bis zu einer dynamischen Aktualisierung der Produktionseinrichtungen zur kontinuierlichen Produktivitatssteigerung r- chen.
This book will assess and compare several options for ammonia co-fueling of diesel locomotives with integrated heat recovery, multigeneration (including on-board hydrogen fuel production from ammonia), and emission reduction subsystems from energy, exergy, and environmental perspectives. Economic considerations will be presented to compare the cost of the proposed systems for different scenarios such as carbon-tax rates, diesel fuel cost and ammonia cost. Fossil fuel consumption and the associated negative environmental impact of their combustion is a significant global concern that requires effective, practical, and sustainable solutions. From a Canadian perspective, the Transportation Sector contributes more than 25% of national greenhouse gas emissions due to fossil fuel combustion, largely due to road vehicles (cars, light and heavy duty trucks). This is a complex and critical challenge to address, particularly in urban areas with high population density. There is a need to develop alternative energy solutions for mass passenger and freight transportation systems that will reduce both the traffic-volume of road vehicles as well as the emissions from the mass transportation systems. The book will be helpful to students in senior-level undergraduate and graduate level courses related to energy, thermodynamics, thermal sciences, combustion, HVAC&R, etc. The quantitative comparative assessment of such alternative energy systems provided by this book will be useful for researchers and professionals interested sustainable development.
Gas Turbines Modeling, Simulation, and Control: Using Artificial Neural Networks provides new approaches and novel solutions to the modeling, simulation, and control of gas turbines (GTs) using artificial neural networks (ANNs). After delivering a brief introduction to GT performance and classification, the book: Outlines important criteria to consider at the beginning of the GT modeling process, such as GT types and configurations, control system types and configurations, and modeling methods and objectives Highlights research in the fields of white-box and black-box modeling, simulation, and control of GTs, exploring models of low-power GTs, industrial power plant gas turbines (IPGTs), and aero GTs Discusses the structure of ANNs and the ANN-based model-building process, including system analysis, data acquisition and preparation, network architecture, and network training and validation Presents a noteworthy ANN-based methodology for offline system identification of GTs, complete with validated models using both simulated and real operational data Covers the modeling of GT transient behavior and start-up operation, and the design of proportional-integral-derivative (PID) and neural network-based controllers Gas Turbines Modeling, Simulation, and Control: Using Artificial Neural Networks not only offers a comprehensive review of the state of the art of gas turbine modeling and intelligent techniques, but also demonstrates how artificial intelligence can be used to solve complicated industrial problems, specifically in the area of GTs.
Dieses bekannte und bewahrte Fachbuch zur Festigkeitsberechnung fuhrt die im Maschinenbaustudium gelehrten Grundlagen uber Werkstoffkunde, Mechanik und Maschinenelemente zusammen. Es ist frei von unnoetigem Ballast, klar aufgebaut und gibt in ubersichtlicher Form die wesentlichen Festigkeitsprobleme im Dampfkessel-, Behalter- und Rohrleitungsbau wieder. Der Autor der Neuauflage brachte das Werk auf den neuesten Stand der Technik und erweiterte es um ein Kapitel uber Explosionsfestigkeit von Apparaten und Rohrleitungen und um ein Kapitel uber Spannungsbewertung explosionsdruckstossfesten Bauteilen. Das Buch berucksichtigt die seit 1990 neu erschienenen AD-Merkblatter, insbesondere zur Spannungsbewertung. Es ist sowohl fur den in der Praxis tatigen Ingenieur als auch fur Studierende eine wertvolle Hilfe und Anleitung bei der Loesung von Festigkeitsfragen.
A modern pedagogical treatment of the latest industry trends in rocket propulsion, developed from the authors' extensive experience in both industry and academia. Students are guided along a step-by-step journey through modern rocket propulsion, beginning with the historical context and an introduction to top-level performance measures, and progressing on to in-depth discussions of the chemical aspects of fluid flow combustion thermochemistry and chemical equilibrium, solid, liquid, and hybrid rocket propellants, mission requirements, and an overview of electric propulsion. With a wealth of homework problems (and a solutions manual for instructors online), real-life case studies and examples throughout, and an appendix detailing key numerical methods and links to additional online resources, this is a must-have guide for senior and first year graduate students looking to gain a thorough understanding of the topic along with practical tools that can be applied in industry.
This book presents the most up-to-date methods of three-dimensional modeling of the fluid dymanics and the solid-fluid interaction within these machines, which are still being developed. Adding modeling to the design process makes it possible not only to predict flow patterns more accurately, and also to determine distorting effects on rotors and casing of pressure and temperature distribution within the compressor. Examples outline the scope of the applied mathematical model.
This book covers all aspects of supercharging internal combustion engines. It details charging systems and components, the theoretical basic relations between engines and charging systems, as well as layout and evaluation criteria for best interaction. Coverage also describes recent experiences in design and development of supercharging systems, improved graphical presentations, and most advanced calculation and simulation tools.
The first comprehensive monograph in blast cleaning technology, this book provides a comprehensive review of the technology, with an emphasis on practical applications. The author first systematically and critically reviews the theory behind the technology. Next you ll learn about the state of current blast cleaning, surface quality aspects, and the effects of blast cleaning on the performance of applied coatings. You ll also discover many of today 's cutting-edge applications, including micro-machining, polishing, maintenance, and surface preparation for coating applications. Finally, the author describes recent advanced applications in the machining industry, including blast cleaning-assisted laser milling.
This professional book deals with belt drying of sewage sludge, mainly of municipal but also of industrial origin. The wastewater treatment resulting in sludge production is briefly described. The types of sludge and their degree of stabilization is treated in depth as they have a high impact on their suitability for belt drying and the necessary exhaust air treatment. Different belt drying systems with or without condensing units and with extruding of dewatered sludge or partial recirculation of dried sludge are presented. Specific water evaporation and energy demand are tabulated for each dryer system on basis of indications of dryer manufacturers, measurements or information of dryer operators. Different sources for thermal energy are stipulated and complete systems of energy supply with internal or external usage of exhaust energy described. Occurring gas compounds in dryer exhaust air and their special features are mentioned in depth. The components and complete systems for exhaust air cleaning are discussed also in their efficiency of removal of individual odorous gas components or of total amount of volatile organic compounds. Conveying systems and storage of dewatered sludge as well as of dried sludge are described together with the related safety issues. Dryer control as well as ATEX, SIL and HAZOP issues and economic aspects are discussed briefly in individual chapters. The book will be useful for engineering enterprises and consultants designing belt drying systems for sludge, but will also transfer useful information to operators. Also authorities dealing with the permission of sludge drying plants will find important aspects with regard to environmental protection and reasonable economic and continuous operation under safe conditions.
Klassische Pkw werden gerne als technisches Kulturgut gesehen. Das ist mit ein Grund, weshalb die Zahl derer, die Young- und Oldtimerfahrzeuge technisch in fahrfertigen Zustand versetzen und darin halten, stetig steigt. Hierzu ist technisches Verständnis, wie ein einzelnes Erzeugnis oder ein gesamtes System funktioniert, eine große Hilfe.Das Buch „Klassische Ottomotorsteuerung“, basierend auf der zum Teil stark überarbeiteten und ergänzten Gelben Reihe von Bosch, greift auf 416 Seiten genau diesen Sachverhalt auf und erklärt in anschaulicher Weise die Grundlagen zu Ottomotoren, insbesondere die Themen Gemischaufbereitung und Zündung. Neben klassischen Vergasern und Zündsystemen werden auch sämtliche Jetronic-Systeme abgebildet. Ein Kapitel zur frühen Motronic, die Zündung und Gemischaufbereitung erstmals miteinander vereint, rundet das Gesamtbild ab. Das Buch ist somit für technikaffine Besitzer von Young- und Oldtimerfahrzeugen ein enormer Wissensfundus, um die technischen Funktionen der historischen Technik besser verstehen zu können.
Diesel engines are installed in just about every yacht and in most large motorboats and, while professional help is often at hand, sometimes it is not. Indeed, engine failure is one of the most frequent causes of RNLI launches. This book explains how to prevent problems, troubleshoot and make repairs using safe techniques. It could also help you save money on expensive bills for yard work you could do yourself. Diesels Afloat covers everything from how the diesel engine works to engine electrics, from fault finding to out of season layup. With this guide and your engine's manual you can get the best performance from your boat's engine and be confident in dealing with any problem. The book covers the syllabus of the RYA Diesel Engine and MCA Approved Engine (AEC-1) courses. This edition has been thoroughly modernised and updated by former course lecturer and currently chief engineer on merchant ships, Callum Smedley.
This book presents new research results in the field of gravity compensation in robotic systems. It explores topics such as gravity compensation of planar articulated robotic manipulators; the stiffness modeling of manipulators with gravity compensators; the multi-degree-of-freedom counter-balancing; the design of actuators with partial gravity compensation; a cable-driven robotic suit with gravity compensation for load carriage; various compensation systems for medical cobots and assistive devices; gravity balancing of parallel robots. The volume demonstrates that gravity compensation methods continue to develop, and new approaches and solutions are constantly being reported. These solutions apply both to new structural solutions and to their new applications. Cobots, exoskeletons and robotic suits, assistive devices, as well as biomechanical systems are among the most promising applications and most pressing areas for further innovation.
This book comprehensively discusses diesel combustion phenomena like ignition delay, fuel-air mixing, rate of heat release, and emissions of smoke, particulate and nitric oxide. It enables quantitative evaluation of these important phenomena and parameters. Most importantly, it attempts to model them with constants that are independent of engine types and hence they could be applied by the engineers and researchers for a general engine. This book emphasizes the importance of the spray at the wall in precisely describing the heat release and emissions for most of the engines on and off-road. It gives models for heat release and emissions. Every model is thoroughly validated by detailed experiments using a broad range of engines. The book describes an elegant quasi-one-dimensional model for heat release in diesel engines with single as well as multiple injections. The book describes how the two aspects, namely, fuel injection rate and the diameter of the combustion bowl in the piston, have enabled meeting advanced emission, noise, and performance standards. The book also discusses the topics of computational fluid dynamics encompassing RANS and LES models of turbulence. Given the contents, this book will be useful for students, researchers and professionals working in the area of vehicle engineering and engine technology. This book will also be a good professional book for practising engineers in the field of combustion engines and automotive engineering.
This book focuses on gasoline compression ignition (GCI) which offers the prospect of engines with high efficiency and low exhaust emissions at a lower cost. A GCI engine is a compression ignition (CI) engine which is run on gasoline-like fuels (even on low-octane gasoline), making it significantly easier to control particulates and NOx but with high efficiency. The state of the art development to make GCI combustion feasible on practical vehicles is highlighted, e.g., on overcoming problems on cold start, high-pressure rise rates at high loads, transients, and HC and CO emissions. This book will be a useful guide to those in academia and industry.
This book discusses the impact of fuels characteristics and their effects on the combustion processes in internal combustion engines. It includes the analysis of a variety of biofuels (alcohol fuels and biodiesel) and biogases (natural gas, hydrogen, etc.), providing valuable information related to consequent effects on performance and emissions. The contents focus on recent results and current trends of fuel utilization in the transport sector. State-of-the-art of clean fuels application are also discussed. Thighs book will be of interest to those in academia and industry involved in fuels, IC engines, engine instrumentation, and environmental research.
An introductory text on radiation heat transfer for undergraduate and postgraduate students with no prior knowledge of the subject. The text introduces the physical principles of radiation heat transfer and develops methods for the analysis of thermal radiation in a variety of engineering applications. |
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