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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 atm), usually in cylindrical or spherical shapes.
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. The station normally has a compressor, which refills the station's tanks, using natural gas ...
If a filling station allows customers to pay at the dispenser, the data from the dispenser may be transmitted via RS-232, RS-485 or Ethernet to the point of sale, usually inside the filling station's building, and fed into the station's cash register operating system. The cash register system gives a limited control over the gasoline pump, and ...
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OLCO Petroleum Group – 319 stations in Ontario and Quebec; Petro-Canada – 1323 stations and 200 Petro-Pass stations across Canada; some acquired from BP (1983), Petrofina (1981) and Gulf Oil in the 1980s; Pioneer Petroleum – 130 stations in Ontario; 7-Eleven brand gasoline; Shell Canada – Canadian unit of Shell with 1800 stations across ...
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 ...
In April 2010 the GX became available to the public in Oklahoma. The CNG Civic in this market is related to favorable natural gas costs and the numerous high-pressure filling stations. The promotion of CNG conversions by natural gas producers headquartered in Oklahoma provided an incentive for Honda to market the Civic GX there.