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  2. Water injection (engine) - Wikipedia

    en.wikipedia.org/wiki/Water_injection_(engine)

    Water injection has been used in both reciprocating and turbine aircraft engines. In a reciprocating engine, the use of water injection, also called anti-detonation injection or ADI, is used to prevent engine knocking also known as "detonation". [ 3] Commonly found on large radial engines with pressure carburetors, it is a mixture of water and ...

  3. 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), NGV's rely on methane combustion, resulting in cleaner emissions due to the removal of contaminants from the natural gas source.

  4. Alternative fuel vehicle - Wikipedia

    en.wikipedia.org/wiki/Alternative_fuel_vehicle

    An alternative fuel vehicle is a motor vehicle that runs on alternative fuel rather than traditional petroleum fuels ( petrol or petrodiesel ). The term also refers to any technology (e.g. electric cars, hybrid electric vehicles, solar-powered vehicles) powering an engine that does not solely involve petroleum. [citation needed]

  5. 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.

  6. Bi-fuel vehicle - Wikipedia

    en.wikipedia.org/wiki/Bi-fuel_vehicle

    Diesel engines converted to use gaseous fuels fall into this class due to the different ignition system. The most common technology and alternate fuel available in the market for bi-fuel gasoline cars is Autogas (LPG), followed by natural gas (CNG), [6] and it is used mainly in Europe. Poland, the Netherlands, and the Baltic states have many ...

  7. Water-fuelled car - Wikipedia

    en.wikipedia.org/wiki/Water-fuelled_car

    A water-fuelled car is an automobile that hypothetically derives its energy directly from water. Water-fuelled cars have been the subject of numerous international patents, newspaper and popular science magazine articles, local television news coverage, and websites. The claims for these devices have been found to be pseudoscience and some were ...

  8. Gas engine - Wikipedia

    en.wikipedia.org/wiki/Gas_engine

    Gas engine. A gas engine is an internal combustion engine that runs on a fuel gas (a gaseous fuel), such as coal gas, producer gas, biogas, landfill gas, natural gas or hydrogen. In the United Kingdom and British English -speaking countries, the term is unambiguous. In the United States, due to the widespread use of "gas" as an abbreviation for ...

  9. European emission standards - Wikipedia

    en.wikipedia.org/wiki/European_emission_standards

    The European emission standards are vehicle emission standards for pollution from the use of new land surface vehicles sold in the European Union and European Economic Area member states and the United Kingdom, and ships in EU waters. [ 1][ 2] The standards are defined in a series of European Union directives staging the progressive ...