Fuel injection pump having a compact spill-port timing control u

Details Fuel injection pump having a compact spill-port timing control u Fuel injection pump having a compact spill-port timing control u

1983-06-07

1986-03-04

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123357, 123503, F02M 5920

Patent

active

045734429

ABSTRACT:
In a fuel injection pump, an engine drives a rotary plunger having an axially extending bore connected to a compression chamber, plural fuel inlet ports alignable with an inlet passage for introducing fuel to the compression chamber, fuel distribution ports for distributing the compressed fuel through the bore to each one of the fuel delivery passages and plural spill ports. A spill-port timing control unit is provided comprising a stator core, a coil wound on thereon, a magnetized ring having a spill groove, and a spring for resiliently maintaining the ring in a reference angular position with respect to the stator core. The magnetized ring is mounted on the plunger so that it can rotate from the reference angular position to an angularly displaced position in proportion to the magnetic flux of the coil to align the spill groove of the ring with each spill port of the plunger to create a passageway through which the compressed fuel is allowed to escape at the termination of fuel injection.

REFERENCES:
patent: 3797469 (1974-03-01), Kobayashi
patent: 3999529 (1976-12-01), Davis
patent: 4036193 (1977-07-01), Kobayashi
patent: 4211520 (1980-07-01), Kranc
patent: 4406263 (1983-09-01), Leblanc

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