Abstract: Disclosed is a method for determining a static flow rate of a piezo-electric injector of an injection system. The piezo-electric injector includes a needle and a piezo-electric actuator designed to control a valve of the injector. The injection system includes an electric generator designed to send electric current pulses to the piezo-electric actuator of the injector, and a voltage sensor designed to measure voltage values at the terminals of the piezo-electric actuator. The method includes the following steps: sending during a phase of closure of the needle of an electric current pulse such that the piezo-electric actuator is positioned in contact with the valve, without giving rise to the opening thereof; measurement of a plurality of voltage values of the piezo-electric actuator; and determining a static flow rate of the piezo-electric injector on the basis of a plurality of voltage values measured of the piezo-electric actuator.

Abstract: Disclosed is a method for determining a static flow rate of a piezo-electric injector of an injection system. The piezo-electric injector includes a needle and a piezo-electric actuator designed to control a valve of the injector. The injection system includes an electric generator designed to send electric current pulses to the piezo-electric actuator of the injector, and a voltage sensor designed to measure voltage values at the terminals of the piezo-electric actuator. The method includes the following steps: sending during a phase of closure of the needle of an electric current pulse such that the piezo-electric actuator is positioned in contact with the valve, without giving rise to the opening thereof; measurement of a plurality of voltage values of the piezo-electric actuator; and determining a static flow rate of the piezo-electric injector on the basis of a plurality of voltage values measured of the piezo-electric actuator.

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.

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.

Abstract: A control method dedicated to the management of an injector of an internal combustion engine, the internal combustion engine being coupled to a device for the post-treatment of the exhaust gases, when an additional injection for treating the gases or an additional injection for calibrating the injection is demanded by the controller, the method including a step of combining the gas-treatment additional injection and the additional injection for calibrating the injection into one, the combining-into-one being performed when additional-injection parameters are compatible.

Abstract: A control method dedicated to the management of an injector of an internal combustion engine, the internal combustion engine being coupled to a device for the post-treatment of the exhaust gases, when an additional injection for treating the gases or an additional injection for calibrating the injection is demanded by the controller, the method including a step of combining the gas-treatment additional injection and the additional injection for calibrating the injection into one, the combining-into-one being performed when additional-injection parameters are compatible.