Abstract
A process and device are disclosed for driving at least one capacitive actuator (P), in particular a piezoelectrically driven fuel injection valve of an internal combustion engine, by means of a microprocessor-controlled control circuit (ST) with a charging capacitor (C) which can be recharged by an energy source (V), which charges the at least one actuator through switches (X1 to X4) controlled by the control circuit, and into which said actuator is again discharged.
Translated title of the contribution | PROCESS AND DEVICE FOR DRIVING A CAPACITIVE ACTUATOR |
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Original language | German |
Patent number | EP0944925 |
IPC | H02N 2/ 06 A I |
Priority date | 5/08/97 |
Publication status | Published - 29 Sept 1999 |