High-Pressure Fuel Pump
AssigneeContinental Automotive GmbH
InventorsMarkus Zankl, Jürgen Bohmann
Life of this patent
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Abstract
Various embodiments include a high-pressure port for a fuel pump comprising: a body defining an internal volume; an outlet valve with an element opening in a first direction; a pressure-limiting valve with an element opening in an opposite second direction; a common valve plate including a sealing seat for both valve elements; and a sleeve guiding the outlet valve element during movement, fastened in the body with an axial stop limiting movement of the outlet valve element and a radial guide guiding the outlet valve element during movement. The guiding sleeve comprises a harder material than the body.
Claims9
A high-pressure port for a high-pressure fuel pump of a fuel injection system, the port comprising:
- a body defining an internal volume;
- an outlet valve with an outlet valve element opening in a first direction;
- a pressure-limiting valve with a pressure-limiting valve element opening in a second direction opposite the first direction;
- a common valve plate including a first sealing seat for the outlet valve element and a second sealing seat for the pressure-limiting valve element;
- and
- a guiding sleeve guiding the outlet valve element during movement, the guiding sleeve fastened in the body with an axial stop limiting movement of the outlet valve element and a radial guide guiding the outlet valve element during movement;
- wherein the guiding sleeve comprises a harder material than the body.
A high-pressure fuel pump for subjecting a fuel in a fuel injection system of an internal combustion engine to high pressure, the pump comprising:
- a pump housing in which the fuel is subjected to high pressure;
- a high-pressure port arranged in a recess of the housing and welded to the pump housing, wherein the port comprises:
- a body defining an internal volume;
- an outlet valve with an outlet valve element opening in a first direction;
- a pressure-limiting valve with a pressure-limiting valve element opening in a second direction opposite the first direction;
- a common valve plate including a first sealing seat for the outlet valve element and a second sealing seat for the pressure-limiting valve element;
- and
- a guiding sleeve guiding the outlet valve element during movement, the guiding sleeve fastened in the body with an axial stop limiting movement of the outlet valve element and a radial guide guiding the outlet valve element during movement;
- wherein the guiding sleeve comprises a harder material than the body;
- a spring carrier projects beyond an end region of the body of the high-pressure port in an axial direction and is arranged in the housing recess with a clearance fit.
Dependencies are inferred from the claim text.