Compressed Natural Gas

Compressed Natural Gas (CNG) is a natural gas in compressed form. Natural gas is a mixture of hydrocarbons mainly methane (CH₄) and is produced either from gas wells or in conjunction with crude oil production. Due to its low energy density for use as a vehicular fuel, it is compressed to a pressure of 200 - 250 bars to facilitate storage in cylinders mounted in vehicle and so it is called compressed natural gas (CNG).