Fuel injection pumping apparatus

Details Fuel injection pumping apparatus Fuel injection pumping apparatus

1995-03-03

1996-04-09

Miller, Carl S.

Internal-combustion engines

Charge forming device

Fuel injection system

123494, F02M 3704

Patent

active

055051782

ABSTRACT:
A fuel injection pump apparatus has a cam ring angularly adjustable within a housing in which is also mounted a rotary drive shaft having an enlarged piston provided with teeth about its periphery. A transducer is provided to sense the passage of the teeth and this includes a part fixed on the housing and a second part mounted on the cam ring. The first part defines a pair of pole pieces which have opposite magnetic polarity and the second part carries a pair of magnetizable plates which remain in close proximity to the pole pieces, the plates defining projections which are in close proximity to the teeth. A sensing coil is provided in the first component and provides a signal as the reluctance between the projections varies as the teeth move past the projections.

REFERENCES:
patent: 4388907 (1983-06-01), Sugo
patent: 4495915 (1985-01-01), Shinoda
patent: 4574756 (1986-03-01), Ito
patent: 4643155 (1987-02-01), Oneill
patent: 4653454 (1987-03-01), Konishi
patent: 4656990 (1987-04-01), Miyaki
patent: 5063903 (1991-11-01), Wahl
patent: 5103792 (1992-04-01), Winkler
patent: 5357930 (1994-10-01), Fehlman

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