WHY A CARBURETOR?
As a liquid, gasoline
is of little or no use to an engine. Its energy
can be released only by combustion, or burning;
in order to burn properly it must be in vapor
form, properly mixed with air, and delivered
to the cylinder of the engine as a combustible
mixture, where it is first compressed and then
ignited by the spark plug.
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WHAT MUST THE CARBURETOR DO?
It is the carburetor's
responsibility to meter, atomize, and distribute
the gasoline throughout the air being drawn
into the engine. It must do these things properly
through a wide range of speed, load, and temperature,
in answer to the demands of the driver, who
controls the amount of fuel flow by his use
of the accelerator.
Since the modern carburetor must do all its
duties automatically with changes in conditions,
it is bound to be an intricate device and appears
very complicated. However, when reduced to basic
functions and studied one step at a time, carburetion
is more easily understood.
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