Abstract: In a method for detecting knocking combustion during the operation of an internal combustion engine with a device for measuring the ionic current, the raw ionic current signal or the evaluated value of the knocking intensity are normalized. This enables the value of the knocking intensity to be reliably compared with a threshold value. The normalization avoids the falsifying influence of large intensity fluctuations of the raw ionic current signal from one combustion cycle to the next without any relation to the true knocking intensity.

Abstract: The present invention relates to a method for detecting knocking combustion during the operation of an internal combustion engine with a device for measuring the ionic current, in which the raw ionic current signal or the evaluated value of the knocking intensity are normalized, which enables the value of the knocking intensity to be reliably compared with a threshold value.

Abstract: The rod ignition transformer including an integrated low-voltage connector to the on-board network supply, and an integrated high-voltage connector to the spark plug, both accommodated in a housing. In the housing, the primary coil and the secondary coil surround a central core comprising a ferromagnetic powder composite material. A magnetic feedback member is formed from a highly-permeable magnetic material having low eddy current losses. The magnetic feedback member preferably is formed from ferrite.

Abstract: An electronic ignition system having a control unit to preset the ignition times of the individual cylinders, an ignition coil, and an end stage with a switching transistor (T.sub.1) for exciting the ignition coil. The end stage is provided with a switching unit with which the sparking cycle of the spark plugs is influenced.

Abstract: The object of the patent application is an electronic control unit with triggering and power components, in particular an ignition control unit, whose electronic circuit comprises various assemblies in hybrid technology. To reduce the assembly expenditure and costs for manufacture, while at the same time reducing the volume, the invention provides for the assemblies of the electronic circuit to be integrated in a hybrid circuit and arranged on a single common carrier element. This carrier element is designed as an electrically non-conductive ceramic carrier of Al.sub.2 O.sub.3, by which the electronic circuit of the control unit is electrically insulated from a heat sink.

Abstract: The invention relates to an electronic control unit, in particular an ignition control unit, containing an electronic circuit in the form of a hybrid circuit arranged on a heat sink, and having a plastic housing element containing the plug terminal jack. There is an electrical connection between the ground connection of the hybrid circuit and a plug terminal. In accordance with the invention, the ground connection between the hybrid circuit and the plug terminal is connected to the heat sink by electrically conducting parts contained in the plastic housing element.

Abstract: In a transistor firing circuit including a transistor, a firing coil having a primary winding across which a flyback voltage appears, and a Zener diode connected at the input side of the transistor for limiting the amplitude of the flyback voltage, there is further provided a resistive voltage divider connected to the transistor and the diode and composed of at least one resistor having a temperature coefficient selected for at least partly compensating for the temperature coefficient of the Zener diode in a manner to maintain the flyback voltage amplitude within narrow, defined limits over the operating temperature range of the circuit.