Injector with a control face on the outlet side
AssigneeRobert Bosch GmbH
InventorFriedrich Boecking
Life of this patent
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Abstract
The invention relates to an injector with a valve chamber which is contained in an injector housing and can be loaded by way of an inlet from the high-pressure accumulation chamber. This valve chamber loads a nozzle inlet to an injection nozzle by means of a control element that can be moved in the injector housing upon the pressure relief of a control chamber. On the control element, which is embodied of one part or multiple parts, a control surface is disposed in the pressure relief region of the nozzle inlet.
Claims9
In an injector including a valve chamber (25) contained in an injector housing (2), which valve chamber can be loaded by way of a high-pressure accumulation chamber inlet (13, 26), and loads a nozzle inlet (15) for an injection nozzle by means of a control element (3) that can be moved in the injector housing (2) to relieve the pressure in a control chamber (4), the improvement wherein a control surface (8) is disposed on the control element (3;
- 27, 28), which is embodied of one part or multiple parts, in the leakage oil chamber region (10, 16) of the nozzle inlet (15),
- wherein the control surface (8) is embodied at a leakage oil control groove (29) with an axial span (9).
Dependencies are inferred from the claim text.