Rosenberger Hochfrequeńztechnik Gmbh & Co. Kg

Rosenberger Hochfrequenztechnik Gmbh

Ruhr-Universitat Bochum

Carl Zeiss Smt Gmbh

Peter Awakowicz

Thomas Musch

Gunnar Armbrecht

Michael Wollitzer

Michel Aliman

Martin Fuchs

Gordon Notzon

Sven Gröger

Marcel Van Delden

Andre Bergner

Christian Schulz

Hin Yiu Anthony Chung

Gennady Fedosenko

Martin Lapke

Thorsten Benter

Alexander Laue

Leonid Gorkhover

Robert Storch

Christian Zietz

Ralf Peter Brinkmann

Thomas Mussenbrock

Ilona Rolfes

Achim Von Keudell

Jens Oberrath

Tim Styrnoll

Rüdiger Reuter

Marc BÖKE

Jörg Winter

An ignition device for igniting an air/fuel mixture in a combustion chamber, in particular of an internal combustion engine, having a spark plug which has a first electrode and a second electrode, having a high voltage source for generating an electrical high voltage pulse at an output of the high voltage source, and having a high frequency voltage source for generating an electrical high frequency alternating voltage at an output of the high frequency voltage source, wherein the output of the high voltage source is connected electrically to the first electrode of the spark plug via a first electrical conduction path in such a way that the high voltage pulse is present at the first electrode, wherein the output of the high frequency voltage source is connected electrically to the second electrode via a second electrical conduction path in such a way that the high frequency alternating voltage is present at the second electrode.

Ignition device for igniting an air/fuel mixture in a combustion chamber

The invention relates to a spark plug () for an internal combustion engine, in particular having a high frequency ignition system, having a central electrode (), a ground electrode () and an electrical insulator () arranged between the central electrode () and the ground electrode (), wherein a central electrode connecting point () for electrically connecting the central electrode () to an ignition system is provided on the insulator (), wherein the central electrode () and the ground electrode () project beyond the insulator () at an axial end () of the spark plug () and each form, with a part projecting axially beyond the insulator (), a central electrode end () and a ground electrode end (), wherein the central electrode end () and the ground electrode end () are arranged and embodied in such a way that an axial region () of a gap () is formed between them in an axial direction, wherein the axial region () of the gap () is spaced apart from the insulator (), wherein at least one additional electrode () is provided which projects beyond the insulator () at the axial end () of the spark plug () and forms, with a part which projects axially beyond the insulator (), an additional electrode end (). In this case the additional electrode () is arranged electrically insulated from the ground electrode () and the central electrode (), on the spark plug (), wherein the additional electrode end () projects into the axial region () of the gap () between the central electrode end () and the ground electrode end () or is arranged into a region () of the gap () which is radially adjacent to the axial region () of the gap (), and as a result divides the gap () into two ignition spark end gaps ().

Spark plug for a high frequency ignition system

An ignition device for igniting an air/fuel mixture in at least one combustion chamber, having an ignition system with electrodes for each combustion chamber, a high-voltage source for generating an electrical high-voltage impulse at an output of the high-voltage source, and a high-frequency voltage source for generating an electrical high-frequency alternating voltage, wherein m ignition systems () are provided with the formula (I) (natural numbers without zero) and m&#x2265;2, wherein &#x3ba; high-frequency voltage sources are provided with the formula (II), and &#x3ba;&#x3c;m, wherein at least one power distributor device is provided which is electrically connected, on the one hand, to at least one high-frequency voltage source and, on the other hand, to n ignition systems, wherein formula (III) and 2&#x2264;n&#x2264;m, the power distributor device transmits the high-frequency alternating voltage or voltages from the high-frequency voltage source or sources to the ignition systems n.

Ignition device and method for igniting an air/fuel mixture

An ignition device for igniting an air-fuel mixture in a combustion chamber, in particular an internal combustion engine, having a spark plug, which has a first electrode and a second electrode, and a high voltage source for generating an electrical high voltage pulse at an output of the high voltage source and having a high frequency voltage source for generating an electrical high frequency alternating voltage at an output of the high frequency voltage source, wherein the output of the high voltage source is electrically connected to the first electrode of the spark plug via a first electrical conductor path such that the high voltage pulse is applied to the first electrode, wherein the second electrode is electrically connected to an electrical ground potential, wherein the spark plug has a third electrode, wherein the output of the high frequency voltage source is electrically connected to the third electrode via a second electrical conductor path, such that the high frequency alternating voltage is applied to the third electrode.

The invention relates to a device and method for measuring the density of a plasma by determining an impulse response to a high-frequency signal coupled into a plasma. The density, electron temperature and/or collision frequency as a function of the impulse response can be determined. A probe having a probe head and a probe shaft can be introduced into the plasma, wherein the probe shaft is connected to a signal generator for electrically coupling a high-frequency signal into the probe head. The probe core is enclosed by the jacket and has at its surface mutually insulated electrode areas of opposite polarity. A balun is arranged at the transition between the probe head and an electrically unbalanced high-frequency signal feed to convert electrically unbalanced signals into balanced signals.

Device and use of the device for measuring the density and/or the electron temperature and/or the collision frequency of a plasma

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Bochum, Germany

Peter Awakowicz