A carburetor (American and Canadian spelling), or carburetor, or carburetor, or carburetor is a device that mixes air and fuel for an internal combustion engine. It is sometimes colloquially abbreviated to carbohydrates in North America or carby in Australia. A carburet or carburet (and therefore carburetion or carburetion, respectively) is to mix the air and fuel or equip (a motor) with a carburetor for that purpose. Carburetors have largely supplanted in the automobile and, to a lesser extent, Aviation By fuel injection. They are still common in small engines for lawn mowers, rototillers, and other equipment.
Fuel injection is the introduction of fuel into an internal combustion engine, most commonly automotive engines, by means of an injector. All diesel engines use fuel injection by design. Gasoline engines can use direct gasoline injection, where the fuel is delivered directly to the combustion chamber, or indirect injection where the fuel mixes with the air before the intake stroke. In gasoline engines, fuel injection replaced carburetors from the 1980s on wards. The main difference between carburetors and fuel injection is that the fuel injection atomizes the fuel through a small nozzle at high pressure, whereas a carburetor is based on the suction created by the accelerated intake air through a Venturi tube to draw fuel into the air stream.