Xem 1-20 trên 42 kết quả Hybrid electric vehicles
  • Important factor in political decision-making is a public opinion as well. Therefore, it is very important to raise global ecological awareness and wider public education regarding ecology. Goal of this book is to bring closer to the readers new drive technologies that are intended to environment and nature protection. The book presents modern technique achievements and technologies applied in the implementation of electric vehicles. Special attention was paid to energy efficiency of EV's. Also today's trends, mathematical models and computer design elements of future cars are presented....

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  • The idea of combining electrical engines and internal combustion (IC) engines has a long history. In 1901 J. Lohner and F. Porsche had already presented a first hybrid electric vehicle (HEV). But this revolutionary concept did not reach full maturity because the electrical components were not developed. The main concern was the battery, a high-performing battery system with acceptable long-term endurance was not available at the time. The battery of the vehicle shown in Figure 1 had a weight of not less than 1800 kg. It was not until the end of the twentieth century that HEVs became a...

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  • There are different degrees of hybridization from microhybrids to extended-range electric vehicles (E-REVs). The complete range between nonhybridized vehicles and pure battery electric vehicles (EVs) is covered. Depending on the degree of hybridization, there are different functionalities available. Table 1 shows the functionality for full hybrid electric vehicles (full HEVs), plug-in hybrid electric-vehicles (PHEV Full HEV, full heavy electric vehicles; PHEVs) with 10 or 40 miles electric-only range, and E-REVs. ...

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  • The design, construction and testing of valve-regulated lead/acid cells with grid designs optimised for high-rate partial state-of-charge cycling for hybrid electric vehicles are described. Computer modelling was used to develop the grid designs. This showed that designs with opposed tabs and terminals on the top and bottom of the cell were likely to have the best performance not only in terms of grid conductivity but also for uniformity.

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  • An electric drive is the electromechanical system that converts electrical energy to mechanical motion. Being a part of automatic equipment, it acts together with the driven object, such as a machine tool, metallurgical, chemical, or flying apparatus, domestic or medical device. Electric drives area includes applications in computers and peripherals, motor starters, transportation (electric and hybrid electric vehicles, subway, etc.

    pdf102p sn_buon 29-11-2012 40 15   Download

  • This is the seventh report by the National Research Council Standing Committee to Review the Research Program of the Partnership for a New Generation of Vehicles (PNGV). The PNGV program is a cooperative research and development (R&D) program between the federal government and the United States Council for Automotive Research (USCAR), whose members are DaimlerChrysler Corporation, Ford Motor Company, and General Motors Corporation (GM).

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  • Electrically powered road vehicles are currently more and more debated and many new prototypes of vehicles and batteries have been presented, e.g. at the 18th International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition in October 2001 in Berlin, Germany, the world’s largest event on this topic under the motto ‘‘Clean and efficient mobility for the millennium’’.

    pdf18p congdat261 08-11-2010 81 14   Download

  • Vehicles that utilize more than one energy source for propulsion are usually termed hybrid vehicles. Although the onboard energy storage system (ESS) may be a flywheel or a hydraulic accumulator, most hybrid vehicles use chemical batteries or capacitors and are termed hybrid-electric vehicles. Fuel cells (FCs) may be used in hybrid-electric vehicles as primary power sources instead of conventional internal combustion engines (ICEs). In this article, ICE–battery hybrid transit buses are discussed specifically and contrasted with conventional drive buses. ...

    pdf16p congdat261 24-11-2010 59 14   Download

  • The rapid development of science and technology leads to improvement of human life, but also creating of new crisis situation. Mankind is confronted with risks that have not been seen before in human history. Global worming is one of the typical examples. Although ma‐ jority of the experts that are studying climate changes claim that global worming is a fact and that it is caused by human, there are also scientists that doubt those statements. One of the main problems related to critical situations is – mater of responsibility.

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  • Road traffic is one of the major consumers of energy, particularly in western industrialized countries, and globally it exhibits the highest growth rate in energy consumption of all sectors. In the Organisation for Economic Cooperation and Development (OECD) countries, more than 33% of the total final energy consumption goes into the transportation sector, amounting to more than 11% of the world’s total primary energy consumed.

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  • Hydrogen fuel cells are one of the most promising alternatives to internal combustion engine hybrids and pure battery electric power for propelling passenger vehicles. Compared to internal combustion engine hybrid vehicles burning hydrocarbon fuels, fuel cell vehicles offer three primary advantages. First, the fuel cell system produces no tank-to-wheel carbon dioxide emissions and no other harmful emissions such as oxides of nitrogen, carbon monoxide, or particulates. Second, the fuel cell system offers the potential for approximately 30% higher well-to-wheel energy efficiency.

    pdf13p congdat261 24-11-2010 58 22   Download

  • A look on energy, renewable energies, energy storage and synthetic fuels, hybrid architecture, fuel cells, hydrogen as a vector of energy of the future.The Earth resources are quite limited in quantity Many challenges to mankind in 21st century: development, health, water, food, demography, education, energy.In physics, energy (Ancient Greek: ἐνέργεια energeia "activity, operation"[1]) is a quantity that is often understood as the ability a physical system has to produce changes on another physical system.

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  • The book presents several approaches in the key areas of practice for which the MATLAB software package was used. Topics covered include applications for: -Motors -Power systems -Robots -Vehicles The rapid development of technology impacts all areas. Authors of the book chapters, who are experts in their field, present interesting solutions of their work. The book will familiarize the readers with the solutions and enable the readers to enlarge them by their own research. It will be of great interest to control and electrical engineers and students in the fields of research the book covers....

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  • In this paper, we investigate the use of paste additives to improve the performance of a horizontal plate, lead–acid battery. The horizontal plate battery can deliver high power for electric and hybrid electric vehicle applications. We develop a series of designs having different paste additives to continuously improve the specific energy ŽW hrkg. performance of this battery. Computer models, previously developed and reported, are used to estimate the specific energy performance of these designs.

    pdf8p congdat261 19-11-2010 55 6   Download

  • The applications of underwater vehicles have shown a dramatic increase in recent years, such as, mines clearing operation, feature tracking, cable or pipeline tracking and deep ocean exploration. According to different applications, the mechanical and electrical configuration and shape of an underwater vehicle are different. For instance, manipulators are necessary when doing mines clearing operation or some other tasks which need to deal with environment.

    pdf0p beobobeo 01-08-2012 38 6   Download

  • A large size 80 V bipolar lead acid battery was constructed and tested successfully with a drive cycle especially developed for a HEV. The bipolar battery was made using the bipolar plate developed at TNO and an optimised paste developed by Centurion. An empirical model was derived for calculating the Ragone plot from the results from a small size 12 V bipolar lead±acid battery.

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  • We insure your car for its agreed value. Your car’s agreed value is set by Just Car at the commencement of your policy and it’s almost always adjusted at the beginning of each subsequent period of cover. It is shown on the most recent of your insurance schedule and renewal notice and it does not change during the period of cover. The agreed value includes GST and is the most we will pay for your car , less any excess(es) and any other deductions this policy explains, for accidental loss or damage covered by this policy occurring during the period...

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  • Some insurers have research units and can advise manufacturers and other organizations of theft trends and vulnerabilities of various vehicles to theft. The Coalition Against Insurance Fraud’s public awareness campaign includes airbag theft and works with legislators to address insurance fraud issues. The National Insurance Crime Bureau has brought together insurers and law enforcement agencies to facilitate identification, detection and prosecution of auto theft-related insurance fraud.

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  • Technological improvements might also involve the adoption and use of alternative fuel or alternative propulsion vehicles. In developing countries, the most commonly discussed alternative vehicle strategies include compressed natural gas (CNG), liquefied petroleum gas (LPG), alcohol-based fuels, and electric propulsion or hybrid -electric vehicles in certain applications. Other alternative fuels showing potential long -term promise in the transport sector include hydrogen fuel cells and various synthetic fuels for use in compression-ignition engines.

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  • Introduction: Today, the energy supply is primarily based on the combustion of fossil fuels. Electricity generation is the main driver for carbon dioxide emissions in stationary applications, whereas vehicles powered by internal combustion engines are a major source of distributed carbon dioxide emissions. The generation of electricity from renewable energy sources such as solar power, wind power, tidal power, or the use of biomass is reducing the burden from carbon dioxide emissions.

    pdf17p congdat261 06-12-2010 101 22   Download

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