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  2. Choke (firearms) - Wikipedia

    en.wikipedia.org/wiki/Choke_(firearms)

    A: Cylinder (no choke) B: Improved cylinder C: Glocken D: Skeet E: Full (normal) F: Spitzbogen G: Jug H: Paradox. The exit end of a choke is smaller by some dimension than the actual bore of the barrel. This difference in diameter is the amount of constriction.

  3. Phonograph cylinder - Wikipedia

    en.wikipedia.org/wiki/Phonograph_cylinder

    Phonograph cylinders (also referred to as Edison cylinders after its creator Thomas Edison) are the earliest commercial medium for recording and reproducing sound.Commonly known simply as "records" in their heyday (c. 1896–1916), a name which has been passed on to their disc-shaped successor, these hollow cylindrical objects have an audio recording engraved on the outside surface which can ...

  4. Multi-valve - Wikipedia

    en.wikipedia.org/wiki/Multi-valve

    A cylinder head of a four valve Nissan VQ engine engine. A multi-valve or multivalve engine is one where each cylinder has more than two valves (an intake, and an exhaust).A multi-valve engine has better breathing, and with more smaller valves (having less mass in motion) may be able to operate at higher revolutions per minute (RPM) than a two-valve engine, delivering more power.

  5. Engine configuration - Wikipedia

    en.wikipedia.org/wiki/Engine_configuration

    1919 Napier Lion II aircraft engine with three cylinder banks. Any design of motor/engine,be it a V or a boxer can be called an "in-line" if it's mounted in-line with the frame/chassis and in-line with the direction of travel of the vehicle.When the motor/engine is across the frame/chassis this is called a TRANSVERSE motor.Cylinder arrangement is not in the description of how the motor/engine ...

  6. Variable Cylinder Management - Wikipedia

    en.wikipedia.org/wiki/Variable_Cylinder_Management

    Honda J35A 3.5L V6 SOHC i-VTEC Variable Cylinder Management(VCM) Engine on 2008 Honda Inspire. Variable Cylinder Management (VCM) is Honda's term for its variable displacement technology, which saves fuel by using the i-VTEC system to disable one bank of cylinders during specific driving conditions—for example, highway driving.

  7. Monobloc engine - Wikipedia

    en.wikipedia.org/wiki/Monobloc_engine

    As casting improved and cylinder blocks became a monobloc, it also became possible to cast both cylinders and crankcase as one unit. The main reason for this was to improve stiffness of the engine construction, reducing vibration and permitting higher speeds. Most engines, except some V engines, are now a monobloc of crankcase and cylinder block.

  8. Inline engine (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Inline_engine_(aeronautics)

    For an aero engine, advantages of the inverted layout include improved access to cylinder heads and manifolds for the ground crew, [5] [6] [7] having the centre of mass of a multi-bank engine lower in the engine and, for engines mounted in the nose, improved visibility for the pilot and placing the widest part of a multi-bank engine closer to ...

  9. Variable displacement - Wikipedia

    en.wikipedia.org/wiki/Variable_displacement

    The oldest engine technological predecessor for the variable-displacement engine is the hit and miss engine, developed in the late 19th century.These single-cylinder stationary engines had a centrifugal governor that cut the cylinder out of operation so long as the engine was operating above a set speed, typically by holding the exhaust valve open.