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  2. Hot-tube ignitor - Wikipedia

    en.wikipedia.org/wiki/Hot-tube_ignitor

    The hot tube usually enters the combustion chamber at the valve block, to the side of the main cylinder bore in a side-valve, and after an ignition event remains full of a small residue of spent gasses as the piston pushes the majority of such out of the exhaust valve.

  3. Heating element - Wikipedia

    en.wikipedia.org/wiki/Heating_element

    Silicon carbide, is used in hot surface igniters, which are heating elements designed for igniting flammable gas, are common in gas ovens and clothes dryers. Silicon nitride has been recently used as a surface igniter for gas furnace and diesel engine glow plugs. Such heating elements or glow plugs reach a maximum temperature of 1400 °C and ...

  4. Hot-bulb engine - Wikipedia

    en.wikipedia.org/wiki/Hot-bulb_engine

    Hot-bulb engine (two-stroke). 1. Hot bulb. 2. Cylinder. 3. Piston. 4. Crankcase Old Swedish hot-bulb engine in action. The hot-bulb engine, also known as a semi-diesel [1] or Akroyd engine, is a type of internal combustion engine in which fuel ignites by coming in contact with a red-hot metal surface inside a bulb, followed by the introduction of air (oxygen) compressed into the hot-bulb ...

  5. Ignitron - Wikipedia

    en.wikipedia.org/wiki/Ignitron

    (1) Anode, (2) Cathode, (3) Ignitor, (4) Mercury, (5) Ceramic insulators, (6) Cooling fluid An ignitron is a type of gas-filled tube used as a controlled rectifier and dating from the 1930s. Invented by Joseph Slepian while employed by Westinghouse , Westinghouse was the original manufacturer and owned trademark rights to the name "Ignitron".

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  7. Hot air solder leveling - Wikipedia

    en.wikipedia.org/wiki/Hot_air_solder_leveling

    HASL or HAL (for hot air (solder) leveling) is a type of finish used on printed circuit boards (PCBs). The PCB is typically dipped into a bath of molten solder so that all exposed copper surfaces are covered by solder.