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Spark plug facts for kids

Kids Encyclopedia Facts

Also known as a "sparking plug", it's a device used in delivering the electric current to the air-fuel mixture in the combustion chamber. It’s connected to the ignition coil and as the electricity flows through the coil, a voltage difference develops between the electrodes on the spark plug.

Images for kids

  • Spark plug insulator

    Dissected modern spark plug showing the one-piece sintered alumina insulator. The lower portion is unglazed.

  • Candela rotta

    Two spark plugs in comparison views in multiple angles, one of which is consumed regularly, while the other has the insulating ceramic broken and the central electrode shortened, due to manufacturing defects and / or temperature swing

  • Bougie3

    Central and lateral electrodes

  • Spark plug gauge

    Gap gauge: A disk with a tapered edge; the edge is thicker going counter-clockwise, and a spark plug will be hooked along the edge to check the gap.

  • Sparkplug3

    Spark plug with two side (ground) electrodes

  • Spark plugs old and replacement 7058

    Old spark plug removed from a car, new one ready to install.

  • 2spark plug viewers

    Two spark plug viewers

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Spark plug Facts for Kids. Kiddle Encyclopedia.