An engine control fuel pump apparatus is provided with a low load fuel
pump control section, a high load fuel pump control section and a
subordinate pump drive section. The low load fuel pump control section
controls a main fuel pump for supplying fuel to an engine when an engine
operating condition indicates that the engine is operating with a low
load. The high load fuel pump control section controls the main fuel pump
and a subordinate fuel pump for supplying fuel to the engine when an
engine operating condition indicates that the engine is operating with a
high load. The subordinate pump drive section drives the subordinate fuel
pump for a prescribed period of time when a rotational speed of the
engine is equal to or higher than a prescribed rotational speed while the
engine is operating in an low load operating region in which the low load
fuel pump control section controls the main fuel pump for supplying fuel
to the engine.