The process of mixing air with vaporized gasoline in a carburetor to create the combustible mixture that an engine burns.
From carburet (to combine with carbon/fuel) plus -ion (process suffix). Emerged in late 19th century as internal combustion engines became widespread.
Getting carburetion exactly right is surprisingly complex—too much fuel and it's wasted, too little and the engine stalls—and different weather, altitude, and driving conditions all require different ratios, which is why modern fuel injection with computers was such a game-changer.
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