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2. Natural gas vehicle - Wikipedia

   en.wikipedia.org/wiki/Natural_gas_vehicle

   A natural gas vehicle (NGV) utilizes compressed natural gas (CNG) or liquefied natural gas (LNG) as an alternative fuel source. Distinguished from autogas vehicles fueled by liquefied petroleum gas (LPG), NGVs rely on methane combustion, resulting in cleaner emissions due to the removal of contaminants from the natural gas source.

3. Liquefied petroleum gas - Wikipedia

   en.wikipedia.org/wiki/Liquefied_petroleum_gas

   LPG is composed mainly of propane and butane, while natural gas is composed of the lighter methane and ethane. LPG, vaporised and at atmospheric pressure, has a higher calorific value (46 MJ/m 3 equivalent to 12.8 kWh/m 3) than natural gas (methane) (38 MJ/m 3 equivalent to 10.6 kWh/m 3), which means that LPG cannot simply be substituted for ...

4. Bi-fuel vehicle - Wikipedia

   en.wikipedia.org/wiki/Bi-fuel_vehicle

   This conversion is adjusted for low speed engines up to 1000 RPM. System for conversion of industrial diesel engine to Bi-fuel operation by substitution of 70–90% natural gas for diesel or HFO. Gas is injected directly before intake valve by high speed electromagnetic injector, one or two injector per each cylinder.

5. Gas to liquids - Wikipedia

   en.wikipedia.org/wiki/Gas_to_liquids

   The World Bank estimates that over 150 billion cubic metres (5.3 × 10 ^ 12 cu ft) of natural gas are flared or vented annually, an amount worth approximately $30.6 billion, equivalent to 25% of the United States' gas consumption or 30% of the European Union's annual gas consumption, [13] a resource that could be useful using GTL. Gas-to ...

6. Autogas - Wikipedia

   en.wikipedia.org/wiki/Autogas

   Autogas or LPG is liquefied petroleum gas (LPG) used as a fuel in internal combustion engines in vehicles as well as in stationary applications such as generators. It is a mixture of propane and butane. [1] Autogas is widely used as a "green" fuel, as its use reduces CO 2 exhaust emissions by around 15% compared to petrol. [2]

7. Liquefied natural gas - Wikipedia

   en.wikipedia.org/wiki/Liquefied_natural_gas

   The heating value depends on the source of gas that is used and the process that is used to liquefy the gas. The range of heating value can span ±10 to 15 percent. A typical value of the higher heating value of LNG is approximately 50 MJ/kg or 21,500 BTU/lb. [2] A typical value of the lower heating value of LNG is 45 MJ/kg or 19,350 BTU/lb.