Damper containing internal lubricant
AssigneeSiemens Automotive Corporation
InventorsJason T. Kilgore, Joseph K. Cecelic
Life of this patent
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Abstract
The present invention provides a damper for a fuel system. The damper includes a first chamber with an interior surface, and a second chamber with a fuel receiving opening. A diaphragm separates the first chamber and the second chamber. A device is disposed within the first chamber that biases the diaphragm toward the fuel receiving opening. A retainer, which supports the device proximate the diaphragm, is located in the first chamber. The retainer has a surface exposed to the interior surface of the first chamber. A lubricant is disposed on at least one of the interior surface of the first chamber and the surface of the retainer.
Claims20
A damper for a fuel system, comprising:
- a first chamber having an interior surface;
- a second chamber having a fuel receiving opening;
- a diaphragm separating the first chamber and the second chamber;
- a device disposed within the first chamber that biases the diaphragm toward the fuel receiving opening;
- a retainer supporting the device proximate the diaphragm, the retainer having a surface exposed to the interior surface of the first chamber;
- and
- a lubricant disposed on at least one of the interior surface of the first chamber and the surface of the retainer.
A method of damping pressure pulsations in a fuel system comprising the steps of:
- separating a housing into a first chamber and a second chamber with a diaphragm;
- providing the second chamber having a fuel receiving opening;
- disposing a device in the first chamber that biases the diaphragm toward the fuel receiving opening;
- supporting the device proximate the diaphragm with a retainer;
- and
- providing lubricant between the retainer and the first chamber.
Dependencies are inferred from the claim text.