用于促动机动车辆的喷射阀的压电促动器的方法和装置

• Format: Patent
• Language: Chinese
• Published: 19.04.2022
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

本发明涉及用于促动燃料喷射系统的喷射阀的压电促动器的方法，该方法包括如下步骤：使用所存储的电流/电压特征曲线来识别用于执行喷射过程的用于压电促动器的促动信号，检测在喷射过程期间流动通过压电促动器的电流的走势、以及在喷射过程期间被施加到压电促动器的电压的走势，使用所检测的电流走势和所检测的电压走势来修改所存储的电流/电压特征曲线，以及，使用所存储的、修改的电流/电压特征曲线，来识别用于执行随后的喷射过程的用于压电促动器的促动信号。本发明还涉及用于促动燃料喷射系统的喷射阀的压电促动器的装置。 Various embodiments include a method for actuating a piezo actuator of an injection valve of a fuel injection system comprising: determining actuation signals for the piezo actuator using a stored current/voltage characteristic curve for carrying out an injection process; detecting the profile of the current flowing through the piezo actuator during the injection process and the profile of the voltage applied to the piezo actuator during the injection process; adapting the stored current/voltage characteristic curve based at least in part on the detected current profile and the detected voltage profile; and determining actuation signals for the piezo actuator using the stored, adapted current/voltage characteristic curve for carrying out a subsequent injection proces