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US 10,859,049 B2Granted
Fuel pump
AssigneeDelphi Technologies IP Limited
InventorsEngin Erdemir, Benjamin P. West, Gunay Cicek, Erol Kahraman
Life of this patent
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Abstract
A fuel pump includes a pump head defining a barrel in which a plunger is slidable to pressurise fuel in a pumping chamber, and a fluid-inlet path through which fuel flows in to the pumping chamber under control of an inlet valve during a plunger return stroke. The plunger causes pressurisation of the fuel in the fluid-inlet path. The fuel pump may also include a fluid-outlet path through which fuel flows out of the pumping chamber, preferably under control of an outlet valve, during a plunger pumping stroke.
Claims11
A fuel pump comprising;
- a pump head defining a barrel in which a pumping plunger is slidable to pressurise fuel in a pumping chamber;
- and
- a fluid-inlet path through which fuel flows in to the pumping chamber under control of an inlet valve during a plunger return stroke;
- wherein the pumping plunger is configured to cause pressurisation of the fuel in the fluid-inlet path;
- wherein a portion of the fluid-inlet path is defined by a priming-pump chamber;
- wherein the fluid-inlet path comprises a fluid-inlet passage leading from the priming-pump chamber to a pumping-chamber inlet;
- and
- wherein the fluid-inlet passage is defined by the pump head.
5 more elements
Dependencies are inferred from the claim text.