Pressure-controlled control part for common-rail injectors
AssigneeRobert Bosch GmbH
InventorFriedrich Boecking
Life of this patent
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Abstract
The invention relates to an injector for injecting fuel that is at very high pressure, which is present at the injector in a common-rail inlet. The fuel acts on a control part, which is actuatable via a fuel volume contained in the control chamber. An inlet and an outlet of the control chamber are each provided with spring elements; the control chamber can be pressure-relieved via a valve element actuatable by means of an actuator. The control part in the injector housing is guided in two guide portions.
Claims11
In an injector for injecting fuel that is at high pressure and is present at the injector in a common rail inlet (4) and acts on a control part (6) which is actuatable via a fuel volume contained in a control chamber (12), in which an inlet (16) and an outlet (8) of the control chamber (12) are provided with throttle elements, and the control chamber (12) can be pressure-relieved via a valve element (9) actuatable by means of an actuator, the improvement wherein said control part (6) is guided in the injector housing (2) by two guide portions (6.1, 6.2).
Dependencies are inferred from the claim text.