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:
03/23/2015 10:23 AM
Hon Hai, Tencent partner in electric car business
Taiwan's Hon Hai Precision Industry Co Ltd on Monday said it has partnered Chinese social networker Tencent Holdings Ltd to develop opportunities related to electric vehicles, marking the latest tech foray into "smart" cars. Hon Hai, WeChat operator Tencent and luxury car dealer China Harmony Auto Holding Ltd signed an agreement to work together in the Chinese city of Zhengzhou, Henan province ...
03/19/2015 05:46 PM
Electric cars combat urban heat problem: study
Electric vehicles are a useful tool for fighting sweaty city summers, according to a study published on Thursday. Switching from vehicles powered by fossil fuels to plug-in equivalents would ease a phenomenon called urban heat island, it said. The term describes what happens when city temperatures are driven higher by heat from traffic and air conditioners and by warmth, stored during the day in ...
03/25/2015 04:46 PM
Analysis of Indian Green Car Market
LONDON, March 25, 2015 /PRNewswire/ -- GOVERNMENT POLICIES & INITIATIVES -Evolution of Electric Vehicle Initiatives MNRE has always been involved in formulating policies for promoting Electric Vehicles. ...
Powered by Fresh Content
EVs ON WIKIPEDIA  ·  EVs HISTORY ·  U.S. Patent 1,017,198 , E. W. Bender, Electric Motor vehicle

source: www.fueleconomy.gov



©2015 bjev.com - Info