Tuesday, October 29, 2013
Single Barrel Carburetor Types
A carburetor combines fuel and air for the internal combustion engine of a motor vehicle. This device can have a single barrel, two barrels or four barrels. A single-barrel carburetor is commonly used on small engines that do not need large amounts of fuel and air. More barrels are only needed when there is a high rate of air flow and fuel displacement.
Single-Barrel Downdraft Carburetor
The single-barrel downdraft carburetor is one of the most common types of single barrel carburetors. These carburetors are suitable for engines requiring low air velocity and containing more air passages. Single-barrel downdraft carburetors use gravity to push the mixture of air and fuel into the cylinder.
Natural or Side Draft Carburetor
Natural or side draft single-barrel carburetors are best suited for use in small spaces above the engine. Unlike the downdraft carburetor, these types of carburetor move the air horizontally into the devices manifolds, which supply the air and fuel mixture to the cylinder.
Updraft Carburetor
The third type of single-barrel carburetor is the updraft carburetor. This type has been replaced by the aforementioned carburetors but some older cars still use them. The updraft carburetor is placed below the engine. Gravity forces the fuel from the tank above into the carburetor below. However, the air and fuel mixture must still be pushed upward into the engine.
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