How CNG Conversions Work


Three Main Components to a Vehicle Conversion

  1. The “under the hood” low pressure CNG Conversion System
  2. The CNG Tank, also referred to as CNG Cylinders to store the on-board compressed natural gas (CNG)
  3. The NFPA-52 Certified high pressure parts




The CNG tank is secured either in the car’s trunk, the bed of the truck, under the vehicle, behind the cab or in the saddle.   A high pressure fuel receptacle, fuel filter, fittings and a CNG fuel line is installed to route and clean the CNG being transferred from the CNG tank into the CNG  regulator.  The regulator reduces the natural gas from 3600 psi to 36 psi until it meets the volume required by the fuel injection system of the car’s engine. Once the gas has reached an acceptable pressure, the solenoid valve releases the flow of natural gas into a multipoint gaseous fuel injection system.   Sensors and computers adjust the fuel-air mixture so that when the spark plugs ignites the gas, it burns efficiently which provides all the power and performance that you expect from your vehicle.

CNG Fueling 2Fueling a CNG converted vehicle requires the same motions and fueling time as is required to fill the vehicle with gasoline or diesel.  The user benefits from increased fuel capacity by storing both gasoline and CNG which can double your driving range.  A CNG conversion does require that the vehicle still store gasoline in the tank as this will be needed to start and  warm the vehicle before automatically switching to run on CNG.  Also, there will be times when driving conditions require that you suddenly speed up or in the case that you encounter an unexpected hill, the vehicle will automatically switch to gasoline for the needed additional power.

Gasoline Bi-Fuel CNG Conversions work just like the original vehicle and are non-invasive and do not alter or interfere with any of the original engine manufacturer (OEM) factory settings or fuel system.  Because the conversions do not tamper with any engine devices or controls they do not violate any anti-tampering laws.

Just about any combustion engine can be converted to run on natural gas.  People have even successfully converted airplanes and trains to run on CNG.

CNG Vehicle Conversions