Continental Automotive Gmbh

Gerhard Wirrer

Klaus-Dieter Schneider

A circuit arrangement controls at least one injection valve, in particular a solenoid injection valve, for an internal combustion engine. The circuit includes a supply potential connection, a reference potential connection; one or more solenoids; a controllable voltage boosting circuit for generating from the first voltage a second voltage that is higher than the first voltage. The voltage boosting circuit is connected at a first input to the supply potential connection and at a first output to the solenoids by means of a respective first controllable semiconductor switching element. A control circuit is connected at least to a respective first semiconductor switching element and the voltage boosting circuit. The control circuit applies the first or the second voltage to the first coil connection of exactly one solenoid depending on an actuation state of one of the injection valves.

Circuit arrangement for controlling an injection valve

For the processing of a knock sensor signal during the detection of knocking in a combustion engine, in order to allow for inexpensively designed, efficient, and accurate bandpass filtering, a signal processing device () has an analog filter (), a sigma-delta modulator () designed for analog-digital conversion, a CIC filter () designed to decimate the sampling rate, and a digital filter ().

Growing community of inventors

Kallmünz, Germany

Gerhard Wirrer