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Automotive glossary: What is a Carburetor or Carburator?

Definition of Carburetor: To produce the gasoline air mixture for the combustion process, an extra gadget is necessary. Either an injection system (prevailing nowadays) or one or more carburetors (nowadays prevalently used with two-stroke gasoline engines, small or older engines). In the carburetor, the gasoline is sucked through a jet (a brass screw with an exactly calibrated drill) and thereby atomized finely. By several mechanisms an optimal as possible mixing ratio of air and gasoline is accomplished, i.e. with accelerations as well as when going with full load (maximum engine power is required), in idle speed and with steady part load (for example constantly going with half throttle). In addition, usually there is an automatic or manual gadget (choke), to make the mixture more rich (more gasoline in the air) when cold starting than on normal operation.

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