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Brief description of the control of a fuel injector piezoelectric of an internal combustion engine of a vehicle, comprising a step of polarization of the actuator piezoelectric
Brief description of the control of a fuel injector piezoelectric of an internal combustion engine of a vehicle, comprising a step of polarization of the actuator piezoelectric
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机译:对车辆的内燃发动机的燃料喷射器压电的控制的简要描述,包括致动器压电的极化步骤
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摘要
Method for controlling a fuel injector with a piezoelectric actuator acting on a valve element, including the following steps, in the normal operation of the vehicle: (200): Estimating an engine parameter (PjEST), representative of an actual play (JREEL) between the piezoelectric actuator and the valve element, (300): Comparing the engine parameter with the equivalent parameter (PjECU) representative of the original play (JINIT): if the engine parameter differs from the equivalent parameter in such a way that the actual play is greater than the original play: Applying an electrical polarization charge to the piezoelectric actuator, in order to polarize the piezoelectric actuator during the injection of the fuel, Commanding the closure of the injector.
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