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  2. Gas cylinder - Wikipedia

    en.wikipedia.org/wiki/Gas_cylinder

    Industrial compressed gas cylinders used for oxy-fuel welding and cutting of steel. A gas cylinder is a pressure vessel for storage and containment of gases at above atmospheric pressure. High- pressure gas cylinders are also called bottles. Inside the cylinder the stored contents may be in a state of compressed gas, vapor over liquid ...

  3. Pressure vessel - Wikipedia

    en.wikipedia.org/wiki/Pressure_vessel

    A welded steel pressure vessel constructed as a horizontal cylinder with domed ends. An access cover can be seen at one end, and a drain valve at the bottom centre. A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure. Construction methods and materials may be chosen ...

  4. Otto cycle - Wikipedia

    en.wikipedia.org/wiki/Otto_cycle

    It is the thermodynamic cycle most commonly found in automobile engines. [1] The Otto cycle is a description of what happens to a gas as it is subjected to changes of pressure, temperature, volume, addition of heat, and removal of heat. The gas that is subjected to those changes is called the system.

  5. Compression ratio - Wikipedia

    en.wikipedia.org/wiki/Compression_ratio

    For example, if the static compression ratio is 10:1, and the dynamic compression ratio is 7.5:1, a useful value for cylinder pressure would be 7.5 1.3 × atmospheric pressure, or 13.7 bar (relative to atmospheric pressure). The two corrections for dynamic compression ratio affect cylinder pressure in opposite directions, but not in equal strength.

  6. Firing order - Wikipedia

    en.wikipedia.org/wiki/Firing_order

    The firing order of an internal combustion engine is the sequence of ignition for the cylinders. In a spark ignition (e.g. gasoline/petrol) engine, the firing order corresponds to the order in which the spark plugs are operated. In a diesel engine, the firing order corresponds to the order in which fuel is injected into each cylinder.

  7. Four-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Four-stroke_engine

    The cylinder wall is a thin sleeve surrounding the piston head which creates a space for the combustion of fuel and the genesis of mechanical energy. A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of ...

  8. Stroke ratio - Wikipedia

    en.wikipedia.org/wiki/Stroke_ratio

    Stroke ratio, today universally defined as bore/stroke ratio, is a term to describe the ratio between cylinder bore diameter and piston stroke length in a reciprocating piston engine. This can be used for either an internal combustion engine, where the fuel is burned within the cylinders of the engine, or external combustion engine, such as a ...

  9. Engine configuration - Wikipedia

    en.wikipedia.org/wiki/Engine_configuration

    Engine configuration. The engine configuration describes the fundamental operating principles by which internal combustion engines are categorized. Piston engines are often categorized by their cylinder layout, valves and camshafts. Wankel engines are often categorized by the number of rotors present. Gas turbine engines are often categorized ...

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