Compact opposed pump
AssigneeCummins-Scania HPCR System, LLC
InventorsEric A. Benham, Mustafa Utku Unal, Donald J. Benson, Samuel David Griffith Magnuson, Benjamin Scott Myser
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a high-pressure fuel pump having barrel sets comprising offset, opposing barrel units within the same plane and having plungers disposed therein. The high-pressure fuel pump further includes a camshaft having at least one offset lobe and a cam ring encircling the lobe and in contact with the plungers, which translate the rotational movement of the camshaft to longitudinal movement of the plungers, controlling inflow, compression, and outflow of fuel within the pump.
Claims15
1-15. (canceled)
A high-pressure fuel pump comprising:
- a housing;
- a camshaft assembly disposed through the housing, the camshaft assembly having an offset lobe and a cam ring encircling the offset lobe;
- a first modular barrel unit coupled to a first side of the housing;
- and
- any one of a passive inlet metering valve, an active inlet metering valve, and a hybrid active inlet metering valve coupled to the housing, wherein the first modular barrel unit includes:
- a module body defining:
- a first opening configured to receive an inlet valve,
- a second opening configured to receive a plunger,
- a channel configured to house an outlet check valve, and
- a modular pathway configured to align with at least one fuel pathway of the housing of the high pressure pump;
- a plunger disposed in the second opening;
- and
- an outlet check valve disposed within the channel.
A modular barrel unit comprising:
- a module body defining:
- a first opening configured to receive an inlet valve of at least one of a passive inlet metering valve, an active inlet metering valve, and a hybrid active inlet metering valve;
- a second opening configured to receive a plunger;
- a channel configured to house an outlet check valve;
- and
- a modular pathway configured to align with at least one fuel pathway of a high-pressure fuel pump;
- a plunger disposed within the second opening;
- and an outlet check valve disposed within the channel.
Dependencies are inferred from the claim text.