Other

Robert Boschgmbh

Stephan Hartmann

Richard Schleupen

Juergen Foerster

Juergen Schenk

Hans-Joachim Volkmann

Joerg Bonitz

Peter Lautenschuetz

A method for determining the ignition angle for an internal combustion engine with adaptive knocking control, in which the occurrence of knocking is reduced by a controlled adjustment of the ignition angle in the retarded direction. The current values for the adjustment in the retarded direction are stored in a characteristic diagram in an operating parameter-dependent fashion. An average adjustment in the retarded direction is determined from these characteristic diagram values, and both a correction ignition angle and a control range limitation for the knocking control are determined therefrom. The fuel quality and ambient influences are automatically sensed with reference to a learned RON level and are also used to reduce the amount of energy expended to control engine knocking.

Method and apparatus for determining the ignition angle for an internal combustion engine with adaptive knocking

A device for detecting a knocking in an internal combustion engine has an evaluating facility, a knock sensor for sensing knocking of an internal combustion engine and producing output signals of the knocking sensor, an evaluation facility for obtaining the filtered signals from the filter from the devices and evaluating the same and a device for controlling a center frequency of at least one of the filter devices depending on at least one operating parameter of the internal combustion engine.

Device for knock detection in internal combustion engine

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Schwieberdingen, Germany

Stephan Hartmann