Direct magnetically controlled inlet valve for fuel pump
AssigneeStanadyne, Inc.
InventorRobert G. Lucas
Life of this patent
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Abstract
An inlet valve assembly for a fuel pump comprises a valve assembly inflow path and valve assembly outflow path; a magnetic valve member situated in an intermediate flow path fluidly linking the inflow path and the outflow path; a magnetic pole adjacent the valve member; and a selectively energizable coil for generating a magnetic flux directly magnetically coupling the pole and the valve member; whereby the valve member opens and closes fluid communication between the inflow path and the outflow path in response to the energized state of the coil.
Claims21
A fuel pump comprising a pump housing, a fuel inlet connection on the housing for delivering feed fuel into an inlet flow path in the housing;
- a pumping chamber and associated pumping mechanism in the housing for receiving feed fuel from the inlet flow path through an inlet valve assembly, increasing the fuel pressure, and delivering fuel at said increased pressure to a discharge flow path;
- an outlet connection on the housing, in fluid communication with the discharge flow path through an outlet valve;
- wherein the inlet valve assembly includes a valve member directly magnetically coupled to an electromagnetic coil, whereby the coil is selectively energized to generate a magnetic flux path directly through the inlet valve member, thereby applying a magnetic force to said valve member to selectively open and close said valve member against a sealing surface in said inlet flow path.
An inlet valve assembly for a fuel pump, comprising:
- a valve assembly inflow path and valve assembly outflow path;
- a magnetic valve member situated in an intermediate position fluidly linking the inflow path and the outflow path;
- a magnetic pole confronting the valve member;
- a selectively energizable coil for generating a magnetic flux directly magnetically coupling the pole and the valve member;
- whereby the valve member opens and closes fluid communication between the inflow path and the outflow path in response to the energized state of the coil.
Dependencies are inferred from the claim text.