Thursday, July 16, 2009

Electric vehicle

An electric vehicle is a vehicle with one or more electric motors for propulsion. This is also referred to as an electric drive vehicle. The motion may be provided either by wheels or propellers driven by rotary motors, by linear motors. A few experimental vehicles, such as some cars and a handful of aircraft use solar panels for electricity.

Unlike an internal combustion engine that is tuned to specifically operate with a particular fuel such as gasoline, diesel or natural gas, an electric drive vehicle needs electricity, which comes from sources such as batteries or a generator. This flexibility allows the drive train of the vehicle while the energy source can be changed.

The electricity used to propel the vehicle may be provided in many different ways; it can come from any energy source, fossil fuels, nuclear power, and renewable and can either be supplied to the vehicle continuously as it is used or stored in the vehicle in some way, such as batteries, super capacitors or fuel cells.

Electric vehicles can include electric cars, electric trains, electric motorcycles and scooters even electric spacecraft. For especially large electric vehicles, such as submarines, the chemical electric can be replaced by a nuclear reactor. The nuclear reactor usually provides heat which is then fed to the propulsion.

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