Natural Gas Vehicles
Natural Gas Vehicles use compressed natural gas (CNG) as fuel instead of petrol to run an internal combustion engine. The operation is cleaner than with petrol. Cars using this technology are readily available, or, a normal car can be converted. Natural gas vehicles are most practical for fleets of vehicles, such as taxis, that are centrally maintained and fuelled, and travel more miles per day than vehicles for personal use. CNG-powered buses are in use in Brazil, Argentina, India, Pakistan and Bangladesh. CNG vehicles available today include the Honda Civic CGX above and the Ford Crown Victoria.
Natural gas is mostly made up of methane, with about 5 percent is made up of water vapour, butane, propane, ethane and other trace gases. Methane can be produced from coal.
Advantages of Natural Gas Vehicles
Disadvantages of Natural Gas Vehicles