Robert Boschgmbh

Wolfgang Hilbert

Michael Baeuerle

Werner Haeming

Oskar Torno

Stefan Unland

Iwan Surjadi

Robert Sloboda

Ulrich Rothhaar

Robert H Entenmann

Thomas Edelmann

Klaus Schenk

Stefan Bollig

A method for detecting knocking provides for weighting or limitation of the knocking threshold. For this purpose, on the one hand a normal range of the reference level is defined and in the case of a deviation from this normal range the knocking threshold is multiplied by a weighting factor less than 1 and, alternatively, the knocking threshold is limited when a prescribable limit value is reached.

Method for detecting knocking

Method for the adaptive knock control of an internal combustion engine

Device for detecting faults in an apparatus for detecting knocking

Protection system for a pressure-charged internal combustion engine and

A system for automatically controlling the supercharging of an internal combustion engine by controlling a variable parameter signal, such as pressure, air quantity, or air mass which characterizes the status of the internal combustion engine supercharging operation. The system includes a closed-loop control system. To optimize supercharging performance the response characteristic of the control system is determined as a function of the rotational frequency of the internal combustion engine and an operating parameter signal which characterizes the dynamic output response of the internal combustion engine and of the supercharger. In the case of large system deviations, the operating parameter signal is derived from the actual measured value of the control variable. The control system raises the value of the operating parameter signal when the control system is deactivated to avoid making an incorrect determination of the value of the operating parameter signal when the control system is then immediately reactivated. When small system deviations occur, the control system operates based on the assumption that the engine and supercharger are operating at a steady-state condition. Under such conditions, the control system uses a stored value for the value of the operating parameter signal.

Automatic supercharging control system for an internal combustion engine

Growing community of inventors

Moeglingen, Germany

Wolfgang Hilbert