The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 1993
Filed:
Oct. 14, 1992
Kenneth H Klopfer, East Hartland, CT (US);
Ilija Djordjevic, East Granby, CT (US);
Malcolm C Higgins, Windsor Locks, CT (US);
Daniel E Salzgeber, Windsor, CT (US);
Stanadyne Automotive Corp., Windsor, CT (US);
Abstract
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.