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Compressed Natural Gas

Compressed Natural Gas. CNG ( Compressed natural gas ) is a fossil fuel substitute for gasoline (petrol ) used in cars and locomotives such as trains. made of methane ADVANTAGES CNG does not contain any lead, thereby eliminating fouling of spark plugs.

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Compressed Natural Gas

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  1. Compressed Natural Gas

  2. CNG (Compressed natural gas) is a fossil fuel substitute for gasoline (petrol) • used in cars and locomotives such as trains. • made of methane ADVANTAGES • CNG does not contain any lead, thereby eliminating fouling of spark plugs. • CNG-powered vehicles have lower maintenance costs than other hydrocarbon-fuel-powered vehicles.

  3. CNG fuel systems are sealed, preventing fuel losses from spills or evaporation. • Increased life of lubricating oils, as CNG does not contaminate and dilute the crankcase oil. • Being a gaseous fuel, CNG mixes easily and evenly in air. • CNG is less likely to ignite on hot surfaces, since it has a high auto-ignition temperature (540 °C), and a narrow range (5–15 percent) of flammability. • Less pollution and more efficiency: CNG emits significantly fewer pollutants (e.g., carbon dioxide (CO2), unburned hydrocarbons (UHC), carbon monoxide (CO), nitrogen oxides (NOx), sulfur oxides (SOx) and PM (particulate matter) than petrol.

  4. Comprehension Questions: (answer in your notebooks) • Find the meaning of the underlined words. • What is CNG and where is it made from? • Why does it increase the life of lubricating oils? Print the file.

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