Pressure-controlled injector with controlled nozzle needle
AssigneeRobert Bosch GmbH
InventorFriedrich Boecking
Life of this patent
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Abstract
The invention relates to an injector for injecting fuel, which is at high pressure, into the combustion chambers of an internal combustion engine. In the injector housing of the injector, a control part and a nozzle needle are received movably, and the injection nozzle inlet is opened by opening a valve chamber and by pressure relief of a control chamber. In the injector housing, control chambers for actuating a nozzle needle and the control part are provided, which can be pressure-relieved via a common control valve.
Claims8
An injector for injecting fuel, which is at high pressure, into combustion chambers of an internal combustion engine, comprising a control part (3) and a nozzle needle (30) received movably in an injector housing (2), and an injection nozzle inlet (34) opened by opening of a valve chamber (12) by pressure relief of a control chamber (36), wherein in the injector housing (2), control chambers (36, 37) are adapted to actuate a nozzle needle (30) and the control part (3) which can be pressure-relieved via a common control valve (25, 27), with each of the control chambers (36, 37) including a separate throttle element (23, 24) located on the outlet-side.
Dependencies are inferred from the claim text.