A fuel transfer apparatus for providing fuel to a vehicle engine from a
plurality of fuel tanks. A transfer pump is positioned intermediate a pair
of fuel tanks and is operable to transfer fuel therebetween. Fuel is
provided to the engine from a first one of the two fuel tanks. Excess fuel
is returned to the first one of the two fuel tanks. When the level in the
first fuel tank is less than the level in the second fuel tank by a
predetermined amount, the transfer pump transfers an amount of fuel from
the second fuel tank to the first fuel tank. Fuel level sensors are
utilized to monitor the level of fuel in the two fuel tanks and report to
a microprocessor which controls the transfer pump. The microprocessor
utilized to control the transfer pump may be incorporated into the
transfer pump, may be a stand alone microprocessor, or may comprise an
existing vehicle circuit board such as, e.g., the electronic control
module (ECM). A fuel transfer line interconnects the two tanks and is
located above the two tanks.
