Fuel pump assembly
AssigneeCummins-Scania HPCR System, LLC
InventorsDonald J. Benson, Eric A. Benham, Richard E. Duncan
Life of this patent
Estimating the term…
Abstract
A fuel pump assembly includes a fuel pump. The fuel pump includes a camshaft having a cam lobe. The camshaft is configured to rotate. The fuel pump includes a first cam roller and a second cam roller disposed about an outer surface of the cam lobe, a first pumping assembly configured to interact with the first cam roller, and a second pumping assembly configured to interact with the second cam roller. The second pumping assembly is offset from the first pumping assembly. The fuel pump further includes a housing configured to support the camshaft, the first cam roller, the second cam roller, the first pumping assembly, and the second pumping assembly.
Claims18
A fuel pump assembly for an engine, comprising:
- a fuel pump comprising:
- a camshaft having a cam lobe, the camshaft configured to rotate;
- a first cam roller and a second cam roller disposed about an outer surface of the cam lobe, wherein the first cam roller and the second cam roller operate on the same cam lobe;
- a first pumping assembly configured to interact with the first cam roller;
- and
- a second pumping assembly configured to interact with the second cam roller,
- wherein the second pumping assembly is offset from the first pumping assembly.
A fuel pump assembly for an engine, comprising:
- a fuel pump comprising:
- a camshaft having a cam lobe, the camshaft configured to rotate;
- a first cam roller and a second cam roller disposed about an outer surface of the cam lobe;
- a first pumping assembly configured to interact with the first cam roller;
- a second pumping assembly configured to interact with the second cam roller, wherein the second pumping assembly is offset from the first pumping assembly;
- and
- a third pumping assembly and a third cam roller, the third pumping assembly configured to interact with the third cam roller.
An engine system, comprising:
- an engine block;
- a cylinder head coupled to the engine block;
- and a fuel system comprising:
- a plurality of fuel injectors positioned within the cylinder head;
- and
- a fuel pump comprising:
- a camshaft having a cam lobe, the camshaft configured to rotate;
- a first cam roller and a second cam roller disposed about an outer surface of the cam lobe;
- a bushing positioned between the cam lobe and at least one of the first cam roller and the second cam roller, the bushing facilitating movement of at least one of the first cam roller and the second cam roller relative to the cam lobe;
- a first pumping assembly configured to interact with the first cam roller;
- and
- a second pumping assembly configured to interact with the second cam roller, wherein the second pumping assembly is offset from the first pumping assembly.
Dependencies are inferred from the claim text.