Where Can I Refuel?
How Do I Refuel a CNG Vehicle?
Why Compressed Natural Gas??
Gasoline powered vehicles produce oxides of nitrogen (NOx) that when combined with volatile organic compounds (V0C's ) which are produced by trees naturally, will react with sunlight in the lower atmosphere to form ozone, a primary constituent of smog. CNG powered vehicles are clean - they emit 85% less NOx, 70% less reactive hydrocarbons, and 74% less carbon monoxide than similar gasoline powered vehicles. The use of CNG-fueled vehicles significantly reduces emissions of ozone precursors. In 1994, about 55,000 vehicles in the United States ran on compressed natural gas (CNG).
How does CNG work?
The common CNG vehicle fuels at pressures of either 3,000 or 3,600 pounds per square inch (psi) and stores its fuel in one or more cylinders located under the body or in the trunk of the vehicle. The filling valve is located in the same general area as that of the gasoline refueling receptacle. When the CNG leaves the storage tank, it travels through high-pressure fuel lines into one or more pressure regulators, where it is reduced to atmospheric pressure. Unlike gasoline, which must be vaporized before ignition, CNG is already gaseous when it enters the combustion chamber. When the intake valve opens, the gas enters the combustion chamber, where it is ignited to power the vehicle.