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Method of controlling a fuel injector

机译:控制燃料喷射器的方法

摘要

Disclosed is a method of controlling a solenoid actuated fuel injector 10 for an internal combustion engine. The injector 10 includes a solenoid actuator 22 which may be energized to move a pintle 20 and needle arrangement such that the needle moves away from a valve seat 28 to an open position. The invention includes circuitry adapted to apply a chopped hysteresis control subsequent to an energisation phase. The control method comprises: obtaining a signal of the current or voltage across the solenoid, analyzing the voltage or current to detect a chopped hysteresis pulse, determining the time point of the end of the chopped hysteresis pulse and applying a braking pulse to the solenoid, the timing of which is dependent on the time point of the end of the chopped hysteresis pulse.
机译:公开了一种控制用于内燃机的螺线管致动的燃料喷射器10的方法。喷射器10包括螺线管致动器22,该螺线管致动器22可被通电以移动枢轴20和针头布置,使得针头从阀座28移开至打开位置。本发明包括适于在激励阶段之后施加斩波磁滞控制的电路。该控制方法包括:获得螺线管两端的电流或电压的信号;分析电压或电流以检测斩波的滞后脉冲;确定斩波的滞后脉冲的结束时间点;以及向螺线管施加制动脉冲;其定时取决于斩波后的磁滞脉冲结束的时间点。

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