Electric vehicle
An electric vehicle is a vehicle that is propelled by electric motors. This is the case for metros and usually trams, and for some trains (i.e. for some locomotives and often for multiple units), and for electric trolleybuses.The term is used in particular for electric automobiles. The rest of the article will pertain to those.
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2 Critics 3 Fans 4 United States 5 International 6 History 7 Productions 8 Prototypes 9 Hobbyists and racing 10 External links |
The energy used to power the motors can be obtained from a variety of sources including fuel cells and batteries. Strictly Solar Powered passenger carrying electric cars and model cars are used only for technology-proving races.
There are a variety of battery electric vehicles that have been produced ranging from SUVs to sports cars. The chief problem with battery electric vehicles is their limited range in comparison with gasoline powered vehicles. This problem is being addressed through the use of gas-electric hybrid vehicles which use an electric engine for acceleration and may then be switched to gasoline power for cruising and in the near future may also be addressed through the use of batteries with higher energy densities and longer life. In addition, auto manufacturers have active programs looking at fuel cells which power electric cars, but electric vehicles have an advantage over fuel cells because fuel cell cars require as much as three times more energy per unit distance than an electric car when hydrogen production energy is included (assuming both vehicles use the same electric motors, the same tires, the same rim size, have the same weight, and share aerodynamic characteristics). Battery electric vehicles also have an advantage over fuel cell electric vehicles because they do not need expensive membranes made of platinum and other rare metals in which to develop their energy, although batteries are also expensive and have environmental disposal issues.
Electric vehicles have been noted for being more environmentally friendly than conventional internal combustion engine (ICE) automobiles. Although the power for the car still has to be generated from a source, this energy can be provided by environmentally friendly technologies such as tidal, solar, wind or hydroelectric power. In addition, electric engines are several times more efficient than an ICE because they only have one moving part and often do not require a transmission and can also reclaim kinetic energy when braking through a regenerative process, although transmission losses from electricity distribution must be considered.
Critics of electric vehicles point out that in addition to the contrast in range, the large batteries needed to store energy in the vehicles are a serious environmental hazard. These claims are often refuted by environmentalists because the batteries can be recycled with minimal environmental impact and more advanced batteries such as lithium ion and nickel metal hydride batteries might give the cars the range of conventional gas cars. Due to lack of production volume, these batteries are currently 3-4 times more expensive than conventional Lead Acid or Nickel Cadmium batteries. Firefighters and rescue personnel require special training to deal with the higher voltages encountered in electric vehicle accidents.
Critics also note that years of research have so far failed to yield economical or long-lasting batteries. In addition, battery recharge times are longer than practical in many situations The fastest recharge times being when quick charge technology is utilized, allowing charging times of under 30 minutes but not practical for gas stations.
The greatest fans of electric vehicles are those who have obtained and used them. Owing to the fact that electric vehicles have not been promoted by the major manufactures in the United States, this is a self-selected group, so their enthusiasm may be misleading. Fans point out the following:
The United States produced many electric automobiles, such as the Detroit Electric, during the early 20th century, but production droped to insignificant numbers with the triumph of gasoline internal combustion engine vehicles in the 1920s.
In recent years, electric vehicles have been promoted through the use of tax credits. In California, the California Air Resources Board attempted to set a quota for the use of electric cars, but this was withdrawn after complaints by auto manufacturers that the quotas were economically unfeasible due to a lack of consumer demand. However, many believe this complaint to be unwarranted due to the claim that there were thousands waiting to purchase or lease electric cars from companies such as General Motors, Ford, and Chrysler in which these companies refused to meet that demand despite their production capability. Others note that the original electric car leases were at reduced cost and the program could not be expected to draw the high volumes required without selling or renting the cars at a financial loss.
The electric car requirement in California was replaced by a combination requirement of a small number of zero-emissions vehicles and a larger number of partial zero-emissions vehicles (PZEV).
In London, electrically powered vehicles are one of the categories of vehicle exempted from the Congestion Charge.
Electric vehicles have a history that is highly unknown to the common person. Electric vehicles existed before ICE vehicles and held many vehicle land speed and distance records in the early 1900s. They were produced by Anthony Electric, Baker Electric, Ford Motor Company, and others and at one point in history out-sold gasoline-powered vehicles. Internal combustion engines replaced electric drive with the invention of the electric starter by Cadillac. For more information on this subject, see history of the electric vehicle.
Recent or current production electric vehicles sold or leased to fleets include:
Recent prototype EVs include:
Aside from production electric cars, often hobbyists build their own EVs by converting existing production cars to run on electricity. Universities such as the University of California, Irvine even go so far as to build their own custom electric or hybrid-electric cars from scratch.
Electric vehicles are also highly popular in quarter mile (400 m) racing. The National Electric Drag Racing Association regularly holds electric car races and often competes them successfully against exotics such as the Dodge Viper.
Variety
Critics
Fans
United States
International
History
Productions
Prototypes
Hobbyists and racing
External links