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Compressed natural gas (CNG) is a fuel gas mainly composed of methane (CH 4), compressed to less than 1% of the volume it occupies at standard atmospheric pressure.It is stored and distributed in hard containers at a pressure of 20–25 megapascals (2,900–3,600 psi; 200–250 bar), usually in cylindrical or spherical shapes.
The fuel consumption is an equivalent measure for cars sold outside the United States, typically measured in litres per 100 km traveled; in general, the fuel consumption and miles per gallon would be reciprocals with appropriate conversion factors, but because different countries use different driving cycles to measure fuel consumption, fuel ...
Volkswagen Caddy/Caddy Maxi EcoFuel CNG (a camping car/van version also available as the Caddy Life Tramper EcoFuel CNG) Volkswagen Eurovan (Transporter) T4/T5 2,0 I4/3,2 VR6 BiFuel/EcoFuel CNG and TSI EcoFuel CNG (latter planned) (also LWB) Suzuki Mehran VX CNG BI FUEL Chevy Express Van CNG (Note, limited range ~130 miles/tank)
AMFA specifies the energy content of 100 cubic feet of natural gas to be equal to 0.823 gallons-equivalent of natural gas, and the gallon equivalency of natural gas is considered to have a fuel content, similar to that for alcohol fuels, equal to 0.15 gallons of fuel.
The estimated fuel cost for this vehicle to drive 25 miles in a combination of city and highway driving is US$1.47 using CNG, based on an average fuel price of US$1.93 per gasoline equivalent gallon (121.5 cubic feet).
Methane, the main component of natural gas, has an autoignition temperature of 580 °C, [48] whereas gasoline and diesel autoignite at approximately 250 °C and 210 °C respectively. With a compressed natural gas (CNG) engine, the mixing of the fuel and the air is more effective since gases typically mix well in a short period of time.
For engines, the facelifted Ertiga received the new K15C Dualjet 1.5-litre MHEV petrol engine and a new compressed natural gas (CNG) engine. [47] The model surpassed 10 lakh total sales figure in February 2024 [ 48 ] and was the top selling car in October 2024 for the second month running with numbers of 18,785 units.
Compressed natural gas (CNG) carrier ships are those designed for transportation of natural gas under high pressure. [1] CNG carrier technology relies on high pressure, typically over 250 bar (2900 psi ), to increase the density of the gas, but it is still 2.4 times less than that of LNG (426 kg/m 3 ). [ 2 ]