Stanadyne Automotive Corp.

Malcolm C Higgins

Ilija Djordjevic

Kenneth H Klopfer

Daniel E Salzgeber

A fuel injection pump having a rotor with a distributor rotor at its outer end and an annular arrangement of radial pumping plunger bores providing a pumping chamber at its inner end. The pump rotor has a coaxial throughbore providing a valve bore intersecting the annular arrangement of plunger bores. A poppet valve, axially shiftable in the valve bore, has a sealing head engageable with a valve seat at the inner end of the rotor throughbore. An armature of a valve electromagnet is fixed to the outer end of the poppet valve for attraction by a coaxial stator when the electromagnet is energized. The poppet valve and armature are coupled to the pump rotor for rotation therewith. A coaxial accumulator bore is provided in a drive shaft adjacent the inner end of the rotor throughbore for supplying fuel to and receiving spilled fuel from the pumping chamber. A shaft driven transfer pump supplies fuel via an annulus in the distributor head to a chamber at the outer end of the rotor and then via the rotor throughbore and a coaxial bore in the poppet valve to the accumulator bore. A pressure regulator is connected between the accumulator bore and transfer pump inlet.

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Windsor Locks, CT, United States of America

Malcolm C Higgins