Siemens Aktiengesellschaft

Wilfried Kleczka

Stefan Krebs

Gerhard Brielbeck

A method for knock regulation in an internal combustion engine, includes using signals from at least one knock sensor to obtain knock values (KW) and using these knock values (KW) to form knock thresholds (KS) with which the knock values (KW) are compared for the purpose of identifying engine knock. Each determined knock value (KW) is compared with a limit value (g) and is replaced by a replacement value (E) if it exceeds the limit value (g), for calculation of a practical knock threshold (KS).

Method for knock regulation in an internal combustion engine

A method for determining ignition angles for individual cylinders in a multicylinder internal combustion engine forms the ignition angles for the individual cylinders, based on values of a basic family of characteristics (KF,) which applies to all cylinders, as a function of a knocking behavior of the internal combustion engine on the basis of a first (fast) and second (slow) adaptation loop. Once the internal combustion engine has been stopped, the values that are present are used in a third adaptation loop to form a family of characteristics (KF,) which is applicable to all cylinders (z), and a shift value (ZW,(z)) for each cylinder. These are stored in a non-volatile manner.

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Munich, Germany

Wilfried Kleczka