Electric Vehicles (EVs)


Electric vehicles (EVs) are propelled by an electric motor (or motors) powered by rechargeable battery packs. Electric motors have several advantages over internal combustion engines (ICEs):
  • Energy efficient. Electric motors convert 75% of the chemical energy from the batteries to power the wheels-internal combustion engines (ICEs) only convert 20% of the energy stored in gasoline.
  • Environmentally friendly. EVs emit no tailpipe pollutants, although the power plant producing the electricity may emit them. Electricity from nuclear-, hydro-, solar-, or wind-powered plants causes no air pollutants.
  • Reduce energy dependence. Electricity is a domestic energy source.
  • Performance benefits. Electric motors provide quiet, smooth operation and stronger acceleration and require less maintenance than ICEs.
The Down Side: Batteries
EVs face significant battery-related challenges:
  • Driving range. Most EVs can only go 150 miles (or less) before recharging-gasoline vehicles can go over 300 miles before refueling.
  • Recharge time. Fully recharging the battery pack can take 4 to 8 hours.
  • Battery cost: The large battery packs are expensive and usually must be replaced one or more times.
  • Bulk & weight: Battery packs are heavy and take up considerable vehicle space.
Researchers are working on improved battery technologies to increase driving range and decrease recharging time, replacement frequency, weight, and cost. These factors will ultimately determine the future of EVs.

Information Articles News Links
other news:
09/14/2014 11:25 PM
Greening of the economy with electric vehicles
New Zealand has a fantastic opportunity to accelerate the "Greening of our Economy" by implementing smart policies that are both environmentally and economically beneficial to New Zealand.
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Research and Markets: Global and Chinese Low Speed Electric Vehicles Industry Report 2014
Research and Markets has announced the addition of the "Global and Chinese Low Speed Electric Vehicles Industry Repor
09/13/2014 11:47 AM
World's First Electric Car Race Kicks Off This Weekend
The first-ever racing series featuring only electric cars will begin this weekend in China. On Saturday (Sept. 13), sleekly designed electric vehicles will zoom around a 2.14-mile (3.4 kilometers) course in Beijing that will take the cars past the city's iconic "Bird's Nest" stadium, built for the 2008 Olympic Games. The inaugural season of the so-called Formula E championship series will run ...
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EVs ON WIKIPEDIA  ·  EVs HISTORY ·  U.S. Patent 1,017,198 , E. W. Bender, Electric Motor vehicle

source: www.fueleconomy.gov



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