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  2. Uniflow steam engine - Wikipedia

    en.wikipedia.org/wiki/Uniflow_steam_engine

    Galloway uniflow steam engine, now in Thinktank, Birmingham Science Museum. Steam entry is usually controlled by poppet valves (which act similarly to those used in internal combustion engines) that are operated by a camshaft. The inlet valves open to admit steam when minimum expansion volume has been reached at the start of the stroke.

  3. Two-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_engine

    Animation of a two-stroke engine. A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle.

  4. Uniflow engine - Wikipedia

    en.wikipedia.org/wiki/Uniflow_engine

    Uniflow steam engine, a steam engine with a long uniflow cylinder that receives inlet steam at each end (for a double-acting engine) and exhausts through ports at the centre. Uniflow diesel engine, a two-stroke diesel engine with inlet through piston-ported fixed ports in the lower part of the cylinder, and exhaust through valves in the ...

  5. Engine efficiency - Wikipedia

    en.wikipedia.org/wiki/Engine_efficiency

    A gasoline engine burns a mix of gasoline and air, consisting of a range of about twelve to eighteen parts (by weight) of air to one part of fuel (by weight). A mixture with a 14.7:1 air/fuel ratio is stoichiometric, that is when burned, 100% of the fuel and the oxygen are consumed.

  6. Internal combustion engine - Wikipedia

    en.wikipedia.org/wiki/Internal_combustion_engine

    In crankcase scavenged 2-stroke engines, exhaust and intake are performed mostly simultaneously and with the combustion chamber at its maximum volume. The main advantage of 2-stroke engines of this type is mechanical simplicity and a higher power-to-weight ratio than their 4-stroke counterparts. Despite having twice as many power strokes per ...

  7. Stuart Turner (company) - Wikipedia

    en.wikipedia.org/wiki/Stuart_Turner_(company)

    A vertical single-cylinder steam engine popular for steam boats, bore 2.25 inches, stroke 2 inches, standing 15 inches high. With A-frame castings and trunk guide. [33] Swan A vertical twin-cylinder steam engine comprising two 5A engines on a common baseplate, popular for steam launches, bore 2.25 inches, stroke 2 inches, standing 15 inches ...

  8. Steam engine - Wikipedia

    en.wikipedia.org/wiki/Steam_engine

    A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be transformed by a connecting rod and crank into rotational force for work.

  9. History of the internal combustion engine - Wikipedia

    en.wikipedia.org/wiki/History_of_the_internal...

    This engine was fuelled by gas vapours, used the piston's intake stroke to draw in outside air, and the air/fuel mixture was ignited by an external flame. [6] Another gas engine was also patented in 1794 by Thomas Mead. [7] 1801: The concept of using compression in a two-stroke gas engine was theorised by French engineer Philippe LeBon D ...

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