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US 7,017,839 B2Granted
Fuel injection valve
AssigneeRobert Bosch GmbH
InventorJörg Heyse
Life of this patent
Estimating the term…
Abstract
A fuel injector, in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine, includes a valve needle at whose discharge-side end a valve-closure member is positioned, which cooperates with a valve-seat surface, formed at a valve-seat member, to form a sealing seat. A spray-discharge orifice calotte connected to the valve-seat member of the fuel injector, or integrally formed in one piece with it, has at least three spray-discharge orifices not all extended axes of the spray-discharge orifices intersecting.
Claims10
A fuel injector comprising:
- a valve-seat member;
- a valve seat surface formed at the valve-seat member;
- a valve needle having a discharge-side end and including a valve-closure member situated at the discharge-side end, the valve-closure member cooperating with the valve-seat surface to form a sealing seat;
- and
- a spray-discharge orifice calotte which is one of (a) connected to the valve-seat member and (b) integrally formed in one piece with the valve-seat member, the spray-discharge orifice calotte having at least three spray-discharge orifices, the spray-discharge orifices having extended axes, not all of the extended axes of the spray-discharge orifices intersecting, wherein at most two axes intersect in each case.
2 more elements
Dependencies are inferred from the claim text.