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  2. Spark plug - Wikipedia

    en.wikipedia.org/wiki/Spark_plug

    Spark plug with single side electrode An electric spark on the spark plug. A spark plug (sometimes, in British English, a sparking plug, [1] and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within ...

  3. Ignition system - Wikipedia

    en.wikipedia.org/wiki/Ignition_system

    A variation coil-on-plug ignition has each coil handle two plugs, on cylinders which are 360 degrees out of phase (and therefore reach top dead center (TDC) at the same time); in the four-cycle engine this means that one plug will be sparking during the end of the exhaust stroke while the other fires at the usual time, a so-called "wasted spark ...

  4. Spark plug wires - Wikipedia

    en.wikipedia.org/wiki/Spark_plug_wires

    Spark plug wires (also called high tension leads) are electrical cables used by older internal combustion engines to transmit high-voltage electricity from the distributor to the spark plugs. Tension in this instance is a synonym for voltage. High tension may also be referred to as HT. [1] Many modern engines use coil-on-plug ignition, a design ...

  5. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.

  6. Spark gap - Wikipedia

    en.wikipedia.org/wiki/Spark_gap

    A spark plug.The spark gap is at the bottom. A spark plug uses a spark gap to initiate combustion.The heat of the ionization trail, but more importantly, UV radiation and hot free electrons (both cause the formation of reactive free radicals) [citation needed] ignite a fuel-air mixture inside an internal combustion engine, or a burner in a furnace, oven, or stove.

  7. Contact breaker - Wikipedia

    en.wikipedia.org/wiki/Contact_breaker

    The contact breaker is operated by an engine-driven cam.On an engine with a distributor, the contact breaker can be found beneath the distributor cap.The position of the contact breaker is set so that it opens (and hence generates a spark) at exactly the optimum moment to ignite the fuel/air mixture.

  8. Delco ignition system - Wikipedia

    en.wikipedia.org/wiki/Delco_ignition_system

    So-called capacitive discharge ignition systems create coil voltages with much shorter rise times and can produce a spark across spark plugs with some fouling. Electronic ignition systems replace some or all of the components the Delco ignition system with solid state and/or optical devices and provide both higher voltages and more reliable ...

  9. Duraspark - Wikipedia

    en.wikipedia.org/wiki/Duraspark

    A resistance wire is used in the primary circuit. The distributors in EEC-III (and later) systems eliminate conventional mechanical and vacuum advance mechanisms. All timing is controlled by the engine computer, which is capable of firing the spark plug at any point within a 50-degree range depending on calibration.

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