A plasma ignition plug for an internal combustion engine has a thorium alloyed tungsten anode separated from a vanadium- or beryllium-alloyed copper cathode by a boron nitride ceramic powder insulator. A generally semi-spherical titanium emitter is electrically coupled to the anode and disposed within an end of the insulator so as to form an annular gap with a torus on the end of the cathode. The surface of the emitter protrudes slightly beyond the rim of the torus on the cathode. High amplitude pulses driven into the anode arc across the annular gap to the cathode at more than twenty-four spots simultaneously, generating a plasma ignition front.

A plasma ignition plug for an internal combustion engine has a thorium alloyed tungsten anode separated from a vanadium- or beryllium-alloyed copper cathode by a boron nitride ceramic powder insulator. A generally semi-spherical titanium emitter is electrically coupled to the anode and disposed within an end of the insulator so as to form an annular gap with a torus on the end of the cathode. The surface of the emitter protrudes slightly beyond the rim of the torus on the cathode. High amplitude pulses driven into the anode arc across the annular gap to the cathode at more than twenty-four spots simultaneously, generating a plasma ignition front.

The antenna structure has a high frequency wave transmission line that transmits a high frequency wave and an emission antenna part for emitting the high frequency wave supplied via the high frequency wave transmission line. The emission antenna part includes a metal antenna having a rod-like shape and a ceramic layer that covers at least a part of the metal antenna.

Disclosed is a high-voltage ignition device for automobiles that can avoid generating high temperatures, comprising a generator, a charger electrically connected to the generator, a lithium battery pack electrically connected to the charger, an ignition switch electrically connected to the lithium battery pack, an ignition coil electrically connected to the ignition switch, a distributor electrically connected to the ignition coil, a high-voltage package electrically connected to the distributor, and spark plugs electrically connected to the high-voltage package; the voltage of the lithium battery pack is higher than the voltage of the generator, and a control switching device is provided between the ignition coil and the distributor. The invention can achieve long-term constant high-voltage ignition, making the fuel burn more fully, the power is more powerful, and the fuel consumption is reduced at the same time, and the economy is better.