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US 2016/0032878 A1Published application
Mechanical fuel pump deactivation
AssigneeCummins Inc.
InventorAdam C. Cecil
Life of this patent
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Abstract
A mechanical fuel pump is disclosed for delivering fuel to an engine of a vehicle, the mechanical fuel pump having an activated configuration and a deactivated configuration. A dual fuel system and method are also disclosed for use with the mechanical fuel pump.
Claims20
A fuel pump comprising:
- a rotatable camshaft including at least one lobe;
- a pump housing defining a pump chamber;
- a pump piston reciprocally mounted in the pump chamber;
- and
- a deactivating element operatively positioned between the at least one lobe and the pump piston, the deactivating element having:
- a first configuration wherein the deactivating element transfers movement of the at least one lobe to the pump piston to deliver fuel to an engine;
- and
- a second configuration wherein the deactivating element absorbs movement of the at least one lobe to deactivate the fuel pump.
5 more elements
A fuel pump comprising:
- a rotatable camshaft including at least one lobe;
- a pump housing defining a pump chamber;
- a pump piston reciprocally mounted in the pump chamber;
- and
- a deactivating element that uncouples the at least one lobe from the pump piston to deactivate the fuel pump.
2 more elements
A method of delivering fuel to an engine of a vehicle, the method comprising:
- rotating a camshaft including at least one lobe;
- operating a fuel pump by transferring movement of the at least one lobe to a pump piston;
- and
- deactivating the fuel pump by absorbing movement of the at least one lobe.
1 more element
Dependencies are inferred from the claim text.