Patent ID: 6422836
Filing Date: 2002-07-23
Classification: F02M,F04B

Abstract:
A reciprocating fuel pump comprising:a housing assembly; a bi-directional reluctance motor, comprising: a first generally annular solenoid coil; a second generally annular solenoid coil disposed adjacent to and coaxial with the first coil; an armature disposed coaxially with the first and second solenoid coils and movable axially bidirectionally by energization of the first and second coils; and a magnetic flux conducting member disposed coaxially between the first and second solenoid coils and the armature and having first and second reluctance gaps; and a pump assembly, comprising: a pump member secured to the armature, the pump assembly being operative to pump fluid into and out of the fuel pump in response to reciprocating movement of the armature.