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One GGE of CNG pressurized at 2,400 psi (17 MPa) is 0.77 cubic feet (22 litres; 5.8 US gallons). This volume of CNG at 2,400 psi has the same energy content as one US gallon of gasoline (based on lower heating values: 148,144 BTU/cu ft (1,533.25 kWh/m 3 ) of CNG and 114,000 BTU/US gal (8.8 kWh/L) of gasoline. [ 22 ]
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)
Using EPA 2018 Fuel Economy Guides assumptions for national average pricing of $2.56/gal regular gasoline and $0.13/kWh [42] we can calculate a vehicle that is rated at 84 MPGe or 40 kW/100 Mi efficiency and has a 16.5 kW EV battery of which 13.5 kWh is usable for electric driving with an advertised range of 33 miles per charge.
In 2013, Nat G CNG Solutions and AGA Systems announced that it had begun offering a Compressed Natural Gas (CNG) version of the Chevrolet Equinox and the GMC Terrain using the 2.4-liter direct-injected engine. The natural gas version is a "bi-fuel" CNG vehicle, meaning that it can run on either gasoline or natural gas, giving it extended range.
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 Brazilian Fiat Siena Tetrafuel 1.4 is the first bi-fuel car that runs on natural gas (CNG) alternating automatically with any of the typical fuel blends used in flexible-fuel vehicles, pure gasoline, or gasohol E25, or just ethanol . Shown below are the CNG storage tanks in the trunk.
However, slow-fill (many hours) can be cost-effective with LNG stations [missing citation - the initial liquefaction of natural gas by cooling requires more energy than gas compression]. The time to fill a CNG tank varies greatly depending on the station. Home refuels typically fill at about 1 kg/h (0.4 GGE/h). At gas stations, where the ...
Cascade storage is used at compressed natural gas (CNG) fueling stations. Typically three CNG tanks will be used, and a vehicle will first be fueled from one of them, which will result in an incomplete fill, perhaps to 2000 psig for a 3000 psig tank. The second and third tanks will bring the vehicle's tank closer to 3000 psi.