Method for actuating an injector, and control unit
AssigneeRobert Bosch GmbH
InventorsThibault Jean Roger Henrion, Alexander Fuchs, Florian Moesenbichler
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Abstract
The invention relates to a method for actuating an injector (1), in particular a fuel injector, wherein the stroke movement of a nozzle needle (2) for opening and closing at least one injection opening (3) is controlled by means of the pressure in a control chamber (4), and the pressure in the control chamber (4) is measured by means of a pressure sensor (5) integrated into the injector (1), wherein characteristic information, in particular time and volume flow rate data, is derived from the sensor signals from the pressure sensor (5) for the stroke movement of the nozzle needle (3) and is used to correct an injection rate model that is based on previously measured time and volume flow rate data.
Claims10
A method for actuating an injector (1), the method comprising:
- controlling a stroke movement of a nozzle needle (2) for opening and closing an injection opening (3) via a pressure in a control chamber (4), and
- measuring the pressure in the control chamber (4) via a pressure sensor (5) integrated into the injector (1), wherein characteristic information, including time and volume flow rate data, is derived from a sensor signal from the pressure sensor (5) for the stroke movement of the nozzle needle (2), and is used to correct an injection rate model that is based on previously measured time and volume flow rate data.
Dependencies are inferred from the claim text.