Kenneth Eugene Potter

US Patent:

56366159, Jun 10, 1997

Filed:

Oct 16, 1995

Appl. No.:

8/543306

Inventors:

Stacy J. Shorey - Grand Rapids MI
Randall C. Harkema - Caledonia MI
Beckie J. DeYoung - Stanwood MI
Kenneth R. Potter - Kalamazoo MI
Robert D. Straub - Lowell MI

Assignee:

Diesel Technology Company - Wyoming MI

International Classification:

F02M 3704

US Classification:

123506

Abstract:

A device is provided for pumping fuel through an internal combustion engine, comprising a pump cylinder and a piston reciprocable within the pump cylinder to define a pump chamber open at one end in which fuel is pressurized during a pump stroke of the piston. A fuel supply means is provided for supplying fuel to the pump chamber. The fuel supply means includes an electromagnetically actuated fuel control valve having an armature secured thereto, with the armature residing in a fuel-filled armature cavity. The armature electromagnetically cycled between a first position closing the fuel control valve and thereby closing the flow of fuel to the pumping chamber and a second position opening the control valve thereby allowing fuel to flow to the pumping chamber. The armature is a flat plate secured to the control valve and constructed with a series of flow through holes and/or slots of prescribed geometry to (i) assist in precluding cavitation errosion of the armature and/or fastener securing it to the control valve by the fuel within the armature cavity, and (ii) to enhance the hysteresis characteristics of the fuel control valve. Various embodiments are provided.

US Patent:

57432384, Apr 28, 1998

Filed:

Mar 25, 1997

Appl. No.:

8/824373

Inventors:

Stacy Jean Shorey - Grand Rapids MI
Randall Clare Harkema - Caledonia MI
Beckie J. DeYoung - Stanwood MI
Kenneth R. Potter - Kalamazoo MI
Robert Daniel Straub - Lowell MI

Assignee:

Diesel Technology Company - Wyoming MI

International Classification:

F02M 3704

US Classification:

123506

Abstract:

A device is provided for pumping fuel through an internal combustion engine, comprising a pump cylinder and a piston reciprocable within the pump cylinder to define a pump chamber open at one end in which fuel is pressurized during a pump stroke of the piston. A fuel supply means is provided for supplying fuel to the pump chamber. The fuel supply means includes an electromagnetically actuated fuel control valve having an armature secured thereto, with the armature residing in a fuel-filled armature cavity. The armature electromagnetically cycled between a first position closing the fuel control valve and thereby closing the flow of fuel to the pumping chamber and a second position opening the control valve thereby allowing fuel to flow to the pumping chamber. The armature is a flat plate secured to the control valve and constructed with a series of flow through holes and/or slots of prescribed geometry to (i) assist in precluding cavitation errosion of the armature and/or fastener securing it to the control valve by the fuel within the armature cavity, and (ii) to enhance the hysteresis characteristics of the fuel control valve. Various embodiments are provided.