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  2. Compressed natural gas - Wikipedia

    en.wikipedia.org/wiki/Compressed_natural_gas

    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.

  3. HCNG - Wikipedia

    en.wikipedia.org/wiki/HCNG

    HCNG or H2CNG (hydrogen compressed natural gas) is a mixture of compressed natural gas and 4–9 percent hydrogen by energy. [1] It may be used as a fuel gas for internal combustion engines [2] [3] [4] and home appliances. (regarding the acronyms in the above emissions chart: AVL = Average Levels? CNG = Compressed Natural Gas HCNG = Hydrogen ...

  4. Natural gas vehicle - Wikipedia

    en.wikipedia.org/wiki/Natural_gas_vehicle

    Methane, the main component of natural gas, has an autoignition temperature of 580 °C, [47] 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.

  5. Building a True Natural Gas Highway - AOL

    www.aol.com/news/2012-11-15-a-true-natural-gas...

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  6. The Cutting Edge: What You Need to Know About Natural Gas - AOL

    www.aol.com/news/2012-11-10-the-cutting-edge...

    There is already increased adoption for natural gas engines, including major automobile manufacturers such as. In the following video, Austin Smith presents an in-depth look at the cutting edge ...

  7. Advantages of Natural Gas Engines - AOL

    www.aol.com/news/2013-08-21-advantages-of...

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  8. Autogas - Wikipedia

    en.wikipedia.org/wiki/Autogas

    There are two types of autogas equipment and autogas stations as well: LPG (propane-butane mix) and compressed natural gas (CNG, methane). Natural gas is stored at a higher pressure than LPG (200 bar vs. 10 bar for LPG). The main consumer of LPG is commercial light-weight cargo transport (so as GAZelles in Russia are mostly LPG-powered).

  9. United States vehicle emission standards - Wikipedia

    en.wikipedia.org/wiki/United_States_vehicle...

    Emissions from all non-road engines are regulated by categories. [48] In the United States, the emission standards for non-road diesel engines are published in the US Code of Federal Regulations, Title 40, Part 89 (40 CFR Part 89). Tier 1–3 Standards were adopted in 1994 and was phased in between 1996 and 2000 for engines over 37 kW (50 hp ...

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