Fuel pump assembly
AssigneeHengst GmbH & Co. KG
InventorAndreas Kasper
Life of this patent
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Abstract
The invention relates to a fuel pump assembly for a motor vehicle, which can be upstream of a fuel pump of the motor vehicle in a fuel line of the motor vehicle, having a pump housing and a pump device arranged thereupon, by means of which fuel can be pumped into and/or through the pump housing when the pump device is in the active state thereof, wherein the pump device has at least one stroke piston pump having an inlet valve and an outlet valve which are opened and closed in alternation by pressure activation when the pump device is active. In order to provide a fuel pump assembly which enables a very energy efficient operation of a motor vehicle thereby equipped, according to the invention the inlet valve and the outlet valve are held in the open positions thereof when the pump device is inactive.
Claims11
1-10. (canceled)
A fuel pump assembly for a motor vehicle that can be connected upstream from a fuel pump of the motor vehicle in a fuel line of the motor vehicle, comprising:
- a pump housing and a pump device situated thereon with which fuel can be pumped into and/or through the pump housing when the pump device is in its active state,
- the pump device comprising at least one stroke piston pump having an inlet valve and an outlet valve that are alternately opened and closed by pressure actuation when the pump device is active, and
- one of the inlet and outlet valves being provided on a piston of the stroke piston pump,
- wherein the valve provided on the piston of the stroke piston pump is the inlet valve, and
- wherein the inlet valve and the outlet valve are each held in their open positions when the pump device is inactive in such a way that fuel that is pumped by the fuel pump of the motor vehicle through the pump housing of the fuel pump assembly does not have to open any valve of the fuel pump assembly.
Dependencies are inferred from the claim text.