| 摘要 |
High-frequency plasma ignition device, in particular for an internal combustion engine, in particular for the ignition of a fuel/air mixture in a combustion chamber of an internal combustion engine, comprising a series resonant circuit which has an electric inductor and an electric capacitor connected in series, and a high-frequency generator with a first electrical terminal and a second electrical terminal for the resonant excitation of the series resonant circuit, a first electrical contact point being provided in which one end of the capacitor and one end of the inductor are connected to one another electrically. The capacitor has a second electrical contact point at an end which is remote from the first contact point, and the inductor has a third electrical contact point at an end which is remote from the first contact point. An electrical connecting device connects the first terminal of the high-frequency generator to the third contact point and the second terminal of the high-frequency generator to the second contact point electrically in such a way that an output signal of the high-frequency generator is applied to the series resonant circuit via the second and third electrical contact points. A a first electrode is arranged and configured in such a way that it is connected electrically to the first electrical contact point. A second electrode is arranged and configured in such a way that it is connected electrically to the second electrical contact point, with the result that an electric voltage which is applied across the capacitor is available between a free end of the first electrode, which free end is remote from the first electrical contact point, and a free end of the second electrode, which free end is remote from the second electrical contact point, for igniting a plasma between said free ends of the first and second electrode. A third electrode is arranged and configured in such a way that it is connected electrically to the third electrical contact point, and a free end of the third electrode, which free end is remote from the third electrical contact point, is arranged in such a way that an electric voltage which is applied via the second and third electrical contact points is available between said free end of the third electrode and the free end of the second electrode for maintaining the plasma after ignition. |
