Method for controlling an injector in a common rail system
AssigneeVitesco Technologies GmbH
InventorsEdouard GAMBIER, Johann RATINAUD, Quentin DUSSARDIER
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Abstract
The invention relates to a method for controlling an injector in a common rail system, comprising the following steps: detecting (E2) an increase between an observed static flow rate and a reference static flow rate and determining (E3) a corrected rail-pressure setpoint (Pcor) guaranteeing the same quantity of fluid injected with the observed static flow rate as that injected with a reference pressure (Pref) and the reference static flow rate. The invention thus advantageously makes it possible to maintain the same duration of injection.
Claims4
A method for controlling an injector in a common rail system, comprising:
- detecting an increase between an observed static flow rate and a reference static flow rate,
- determining a corrected rail-pressure setpoint guaranteeing the same quantity of fluid injected with the observed static flow rate as that injected with a reference pressure and the reference static flow rate, where the duration of injection and, respectively, the mass of fluid injected remains the same, and where the corrected pressure is determined experimentally from a characteristic of static flow rate as a function of rail pressure, by adding to the reference pressure the difference between a pressure that there ought to be for the observed static flow rate, and the reference pressure.
Dependencies are inferred from the claim text.