| 摘要 |
<p>The invention describes a method and an apparatus for charging a piezoelectric element, for example, used as an actuator in a fuel injection system of an internal combustion engine. The method and apparatus are characterized in that the piezoelectric element is activated by an activation voltage having a value set as a function of a capacitance of the piezoelectric element, the capacitance being determined based on a time for charging/discharging the piezoelectric element to a desired voltage, and based upon, for example, a correction value for injected fuel volume. <IMAGE></p> |
