Valve needle for a fluid injection valve
AssigneeContinental Automotive GmbH
InventorsMaria Carmela Fierro, Walter Becuzzi
Life of this patent
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Abstract
The present disclosure relates to fluid injection valves. Embodiments of the teachings thereof may include a valve needle for a fluid injection valve and a fluid injection valve. For example, a valve needle for a fluid injection valve may include: a needle shaft; and a sealing ball welded to a tip of the needle shaft. The welded joint between the sealing ball and the needle shaft comprises at least two separate weld seams extending along a perimeter of the valve needle in the form of c-shaped arcs.
Claims11
A valve needle for a fluid injection valve, the valve needle comprising:
- a needle shaft;
- and
- a sealing ball welded to a tip of the needle shaft;
- wherein a welded joint between the sealing ball and the needle shaft comprises at least two separate weld seams extending along a circular perimeter of the valve needle,
- wherein each of the weld seams comprises a c-shaped arc having a uniform circular curvature extending along the circular perimeter of the valve needle in an angular range between 90 and 180 degrees, and
- wherein each of the weld seams is physically distinct from each other weld seam along the circular perimeter of the valve needle, to thereby define a non-continuous weld around the circular perimeter of the valve needle.
A fluid injection valve comprising:
- a fluid flow inlet;
- a fluid flow outlet;
- a needle shaft;
- and
- a sealing ball welded to a tip of the needle shaft and configured to seal the fluid flow outlet when in a closed position;
- wherein a welded joint between the sealing ball and the needle shaft comprises at least two separate weld seams extending along a circular perimeter of the valve needle,
- wherein each of the weld seams comprises a c-shaped arc having a uniform circular curvature extending along the circular perimeter of the valve needle in an angular range between 90 and 180 degrees, and
- wherein each of the weld seams is physically distinct from each other weld seam along the circular perimeter of the valve needle, to thereby define a non-continuous weld around the circular perimeter of the valve needle.
Dependencies are inferred from the claim text.