Piston pump with cam actuated valves
AssigneeCaterpillar Inc.
InventorRussell Henderson
Life of this patent
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Abstract
A method of controlling a piston pump is disclosed. The method includes actuating a plurality of pistons housed within a cylinder barrel to cause each of the plurality of pistons to engage in reciprocating motion. Fluid supplied to each of the pistons may be regulated by changing a clock position of an intake cam ring to cause a plurality of intake valves to open and close relative to the clock position of the intake cam ring. Fluid discharged by each of the pistons may be regulated by changing a clock position of an exhaust cam ring to cause a plurality of exhaust valves to open and close relative the clock position of the exhaust cam ring.
Claims7
A method of controlling a piston pump, comprising:
- actuating a plurality of pistons housed within a cylinder barrel to cause each of the plurality of pistons to engage in reciprocating motion;
- regulating fluid supplied to each of the pistons by changing a clock position of an intake cam ring to cause a plurality of intake valves to open and close relative to the clock position of the intake cam ring, wherein the intake cam ring surrounds the plurality of intake valves;
- and
- regulating fluid discharged by each of the pistons by changing a clock position of an exhaust cam ring to cause a plurality of exhaust valves to open and close relative to the clock position of the exhaust cam ring, wherein the exhaust cam ring surrounds the plurality of exhaust valves.
Dependencies are inferred from the claim text.