Fuel Pump and How it Works
The fuel pump is a submersible pump with a permanent magnet electric motor.
Fuel enters
the pump inlet tube after passing through a sock style filter and is pushed through the pump
by the motor to the outlet.
The purpose of the...
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Fuel Pump and How it Works
The fuel pump is a submersible pump with a permanent magnet electric motor.
Fuel enters
the pump inlet tube after passing through a sock style filter and is pushed through the pump
by the motor to the outlet.
The purpose of the fuel pump is to convey the fuel reaching
from its fuel tank into the individual cylinders under the requisite high pressure in order to
ensure good atomization and good combustion of fuel.
Fuel pump consists of a motor, a vane roller pump, a fuel damper, and a relief valve to
prevent system damage from over pressure.
The pump contains a single check valve on the
output side which restricts fuel movement in either direction, maintaining fuel system
pressure, typically, at 40 to 45 psi when the pump is not operating.
The pump plunger is moved upwards by the two piece cam through the roller and the guide
plunger.
A spring forces the guide plunger with the roller down on to the cam, while a
second spring presses the pump plunger on t
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