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Ravi Rajamani
The environmental impact of hydrocarbon-burning aircraft is one of the main motivations for the move to electric propulsion in aerospace. Also, cars, buses, and trucks are incorporating electric or hybrid-electric propulsion systems, reducing the pressure on hydrocarbons and lowering the costs of electrical components. The economies of scale necessitated by the automotive industry will help contain costs in the aviation sector as well. The use of electric propulsion in airplanes is not a new phenomenon. However, it is only recently that it has taken off in a concrete manner with a viable commercial future. The Electric Flight Technology: Unfolding of a New Future reviews the history of this field, discusses the key underlying technologies, and describes how the future for these technologies will likely unfold, distinguishing between all-electric (AE) and hybrid-electric (HE) architectures. Written by Dr.
Jean Broge
Aviation propulsion development continues to rely upon fossil fuels for the vast majority of commercial and military applications. Until these fuels are depleted or abandoned, burning them will continue to jeopardize air quality and provoke increased regulation. With those challenges in mind, research and development of more efficient and electric propulsion systems will expand. Fuel-cell technology is but one example that addresses such emission and resource challenges, and others, including negligible acoustic emissions and the potential to leverage current infrastructure models. For now, these technologies are consigned to smaller aircraft applications, but are expected to mature toward use in larger aircraft. Additionally, measures such as electric/conventional hybrid configurations will ultimately increase efficiencies and knowledge of electric systems while minimizing industrial costs.
Kevin Jost
Development of higher-voltage electrical systems in vehicles has been slowly progressing over the past few decades. However, tightening vehicle efficiency and emissions regulations and increasing demand for onboard electrical power means that higher voltages, in the form of supplemental 48 V subsystems, may soon be nearing production as the most cost-effective way to meet regulations. The displacement of high-wattage loads to more efficient 48 V networks is expected to be the next step in the development of a new generation of mild hybrid vehicles. In addition to improved fuel economy and reduced emissions, 48 V systems could potentially save costs on new electrical features and help better address the emerging needs of future drivers. Challenges to 48 V system implementation remain, leading to discussions by experts from leading car makers and suppliers on the need for an international 48 V standard. Initial steps toward a proposed standard have already been taken.
Jon Harrop, Peter Harrop
The electric vehicle business will approach a massive $500 billion in 2025 with the traction motors segment capturing over $25 billion. Traction motors propelling land, water and air vehicles along can consist of one inboard motor or - an increasing trend - more than one near the wheels, in the wheels, in the transmission or ganged to get extra power. Complex trends in this industry are explained with this updated report, and future winning suppliers are identified alongside market forecasts. The information is especially important as hybrid vehicles may have the electric motor near the conventional engine or its exhaust, and this may mean they need to tolerate temperatures never before encountered in pure electric vehicles. Motors for highly price-sensitive markets such as electric bikes, scooters, e-rickshaws and micro EVs avoid the price hikes of neodymium and other rare earths in the magnets.
Timothy George Thoppil
Unwinding Electric Motors: Strategic Perspectives and Insights for Automotive Powertrain Applications provides an in-depth assessment of the most important technology, manufacturing, and supply chain aspects of the fast-paced world of electric motors. A joint effort that brings together the technology and product strategy experience of the P3 Group and the focused reach of SAE International, Unwinding Electric Motors: Strategic Perspectives and Insights for Automotive Powertrain Applications lends clarity combined with solid data to those interested in understanding the fundamental factors shaping this industry in the next five years. Authored by Timothy G. Thoppil, from the P3 Group, this market study draws on extensive industry experience and is supported by surveys and interviews with industry professionals from OEMs, Tier 1 suppliers, research institutions, and universities.
The SAE International Journal of Alternative Powertrains backfile includes online access to all published papers from 2008 through last year. The SAE International Journal of Alternative Powertrains is dedicated to providing a forum for scholarly publication of original research and review papers that address challenges and present opportunities in alternative and electric powertrains and propulsion technology. The Journal strives to facilitate discussion between researchers, engineers, academic faculty and students, and industry practitioners working with systems as well as components, and the technological aspects and functions of powertrains and propulsion systems alternative to the traditional combination of internal combustion engine and mechanical transmission.
John M. Miller
Completely updated with the most current topics of interest on plug-in hybrid and battery electrics, this new book provides comprehensive coverage on all aspects of the hybrid vehicle design. Key aspects include hybrid propulsion system architectures, propulsion system sizing, electric traction system sizing and design, loss mechanisms, system simulation and vehicle certification. Practicing engineers and managers involved in hybrid vehicle development, modeling and simulation, and testing will find this book invaluable. Worldwide the automotive industry is being challenged to make dramatic improvements in vehicle fuel economy. Taking effect in 2012, the new rules set more aggressive fuel economy measures that will require significant gains in engine and driveline efficiency, better performance cabin climate control, and the introduction of electric hybridization.
Martin Brown
This book is aimed at people who want to understand how AC inverter drives work and how they are used in industry. Power Electronics in Motor Drives is much more about the practical design and application of drives than about the mathematical principles behind them. The key principles of power electronics are described and presented in a simple way, as are the basics of both DC and AC motors. The detailed electronics of DC and AC drives are explained, together with the theoretical background and the practical design issues such as cooling and protection. An important part of the book gives details of the features and functions often found in AC drives, and gives practical advice on how and where to use these. A wide range of drive applications are described from fresh water pumping to baggage handling systems. The practical problems of using AC drives in industry are presented, and together with the application and function descriptions, should prove useful and informative.
This unique book gives rare insight into the work of Honda's worldwide R&D team, covering technical developments from October 2008 through March 2009. With special focus on fuel cell vehicles, the 33 papers included also cover other automotive topics, as well as motorcycle, power products, and other fundamental technologies. Full-color diagrams complement the text. Title highlights include: New Fuel Cell Stack for FCX Clarity Development of Lithium Ion Battery System for Fuel Cell Vehicle Technology for Increased Fuel Efficiency in New INSIGHT Vaporization Characteristic of High-ethanol Gasoline (E85) and Cold Startability Development of Brake-by-Wire System for Super Sport Motorcycles Rearward Visibility Simulation System of Motorcycle Rearview Mirrors Psychological Effects of Use of Electric Scooter This publication is available in both print and electronic format. The electronic format is also conveniently available for purchase in individual chapters.
This unique publication chronicles the top Honda technical developments from October 2006 through March 2007. The 27 papers included give rare insight into the Honda's worldwide R&D team, and cover automotive, motorcycle, power products, and other fundamental technologies. Full-color diagrams complement the text. Title highlights include: Development of 1.8L Flexible Fuel Vehicle System for 2007 Model Year CIVIC for Brazil Hydraulic Control Technologies with Robust Stability and Performance for CVT Start Clutch Development of New BF90 Outboard Motor Research on Extended Expansion General-Purpose Engine (Part 2)- Heat Release and Brake Performance Thermal Management of Air-cooled Motorcycle Engines Using Forced Oil-cooling System Motorcycle Dynamic Simulation Model Incorporating Actual Rider Behavior Data This publication is available in both print and electronic format. The electronic format is also conveniently available for purchase in individual chapters.
Paul Nieuwenhuis, Philip Vergragt, Peter Wells
Mobility is in crisis, but few seem aware of the full extent of it. This book shows that for a genuinely sustainable transport future, far more radical change - affecting many aspects of society - is needed. This book brings together a range of views representing both leading-edge thinking and best practices in the mobility sector, with the individual expert contributions framing a broader vision of future mobility. It is necessary to move beyond the technology of new cars to confront the challenges of institutional, cultural, and social change required for increased sustainability. This book breaks through the conventional boundary between engineering and the social sciences, and the contributors represent both sides of this divide, combining economists, engineers, geographers, designers, and others.
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