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US 6,745,993 B2Granted
Fuel injection valve
AssigneeRobert Bosch GmbH
InventorMartin Mueller
Life of this patent
Estimating the term…
Abstract
A fuel injector, such as a fuel injector for fuel injection systems in internal combustion engines, includes a valve needle, the valve-closure member of which cooperates with a valve seat surface to form a sealing seat, and includes an armature engaging with the valve needle, the armature being arranged on the valve needle in an axially movable manner and being damped by a damping element including an elastomer. A ring space is formed between damping element and the valve needle, which is filled with fuel, the ring space being in contact with a throttle gap.
Claims13
A fuel injector, comprising:
- a valve needle including a valve-closure member, the valve-closure member cooperating with a valve seat surface to form a sealing seat;
- a damping element made of an elastomer;
- a flange including a ring-shaped depression on which the damping element is arranged, the ring-shaped depression forming a ring space between the damping element and the valve needle, the ring-space being in contact with a throttle gap at the valve needle;
- and
- an armature engaging with the valve needle, the armature being arranged on the valve needle in an axially movable manner and damped by the damping element, and the damping element being arranged between the flange and the armature;
- wherein the ring-space is configured to receive fuel.
3 more elements
Dependencies are inferred from the claim text.