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US 12,173,675 B2Granted
Pump assemblies with barrel guiding features
AssigneeCummins Inc.
InventorsEric A. Benham, Karthik Sethuraman, Donald J. Benson, Michael Andrew Lucas, Richard E. Duncan
Life of this patent
Estimating the term…
Abstract
At least some embodiments of the present disclosure are directed to pump assemblies. In some embodiments, the pump is a high-pressure pump for an engine. The pump includes: an inlet valve configured to receive fuel; an armature coupled to the inlet valve and configured to actuate the inlet valve; and a pump barrel comprising a barrel guide, the barrel guide comprising a protrusion and configured to guide a motion of the armature.
Claims20
A high-pressure pump for an engine, the pump comprising:
- an inlet valve configured to receive fuel;
- an armature coupled to the inlet valve and configured to actuate the inlet valve, the armature including an armature surface and a height along the armature surface measured from a bottom surface of the armature to a top surface of the armature;
- and
- a pump barrel comprising a barrel guide and a barrel seat, the barrel guide comprising a protrusion having a height extending from the barrel seat through the bottom surface from which the height of the armature is measured to the top surface of the armature and configured to guide a motion of the armature from a closed position of the inlet valve in which the bottom surface of the armature is supported on the seat to an open position in which an air gap is formed between the bottom surface of the armature and the seat.
1 more element
A high-pressure pump for an engine, the pump comprising:
- an inlet valve configured to receive fuel;
- an armature coupled to the inlet valve and configured to actuate the inlet valve, the armature comprising an armature surface and a height along the armature surface measured from a bottom surface of the armature to a top surface of the armature;
- and
- a pump barrel comprising a barrel guide and a barrel seat, the barrel guide comprising a first surface conforming to a surface of the armature surface, the first surface having a height extending from the barrel seat through the bottom surface from which the height of the armature is measured to the top surface of the armature and configured to guide a motion of the armature from a closed position of the inlet valve in which the bottom surface of the armature is supported on the seat to an open position in which an air gap is formed between the bottom surface of the armature and the seat.
1 more element
Dependencies are inferred from the claim text.