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Fuel injection is a system for mixing fuel with air in an
internal combustion engine. It has become the primary fuel delivery
system used in automotive petrol engines, having almost completely
replaced carburetors in the late 1980s.
A fuel injection system is designed and calibrated specifically
for the type(s) of fuel it will handle. Most fuel injection systems are
for gasoline or diesel applications. With the advent of electronic
fuel injection (EFI), the diesel and gasoline hardware has become
similar. EFI's programmable firmware has permitted common hardware to be
used with different fuels.
Carburetors were the predominant method used to meter fuel on gasoline
engines before the widespread use of fuel injection. A variety of
injection systems have existed since the earliest usage of the
internal combustion engine.
The primary difference between carburetors and fuel injection is
that fuel injection atomizes the fuel by forcibly pumping it through a
small nozzle under high pressure, while a carburetor relies on low
pressure created by intake air rushing through it to add the fuel to the
airstream.
The fuel injector is only a nozzle and a valve: the power to
inject the fuel comes from a pump or a pressure container farther back
in the fuel supply. |
(847) 220-8763
Fuel Injectors
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