Robert Boschgmbh

Kai Dierssen

Carsten Kluth

Robert Sloboda

Anton Kantschar

Andreas Meinken

Jan Boettger

Rudi Eichhorn

Jochen Goebels

Werner Haeming

Oskar Torno

Federico Buganza

Jasmin Dieringer

Stefan Kempf

Frédéric Gabel

Goetz Stelzenmueller

Frederic Gabel

A method and a device are provided for controlling an internal combustion engine, a knock sensor being provided for acquiring combustion signals of the internal combustion engine. Devices are also provided that, during running operation of the internal combustion engine, select operating ranges of the internal combustion engine that are suitable for a determination of fuel quality, and carry out a determination of the fuel quality in these ranges on the basis of signals of the knock sensor.

Method and device for controlling an internal combustion engine

An apparatus for furnishing an amplified sensor signal of a knock sensor, encompassing an analog amplifier for amplifying the sensor signal in accordance with a first definable gain factor; an analog/digital converter for digitizing the amplified sensor signal into a digitized sensor signal; a digital amplifier for amplifying the digitized sensor signal in accordance with a second definable gain factor; and a control unit in order to furnish the first and the second gain factor as a function of a baseline sound level of the sensor signal, the baseline sound level corresponding to the component of the solid-borne sound signal generated in normal operation without knocking.

Knock detection system and method for an amplifier control for a knock signal

A method for computing an ignition angle of an internal combustion engine as a function of the operating conditions of the engine and knock signals K, which indicate knocking combustion in the engine. If knock occurs, the ignition angle is retarded. If knock stops for a first period, the ignition angle is advanced again. Advance of the ignition angle is limited on the basis of the first period. If knock stops for a second period, which exceeds the first period, the ignition angle is further advanced.

Method for computing an ignition angle of an internal combustion engine

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Karlsruhe, Germany

Kai Dierssen