A reciprocating pump includes a drive section and a pump section. The
drive section has a reciprocating coil assembly to which alternating
polarity control signals are applied during operation. A permanent magnet
structure of the drive section creates a magnetic flux field which
interacts with an electromagnetic field produced during application of
the control signals to the coil. Depending upon the polarity of the
control signals applied to the coil, the coil is driven in one of two
directions of movement. A drive member transfers movement of the coil to
a pump element which reciprocates with the coil to draw fluid into a pump
chamber and expel the fluid during each pump cycle. The pump is
particularly well suited to cyclic pumping applications, such as fuel
injection systems for internal combustion engines.