Ignition device for a plasma jet - spark plug and ignition system

摘要

It is an ignition device for a spark plug including a power supply with a positive polarity, in which the ignition device can cause, that the spark plug, a spark discharge with the use of their center electrode is produced as a negative electrode, and furthermore both the time sequence for the supply of electric energy to the spark plug as well as the time sequence for the loading of the capacitors can be set. The ignition device for a spark plug is designed so as to cause the spark plug, a spark discharge with the use of their center electrode is produced as a negative electrode, and comprises a positive power supply and a plurality of energy supply units. Each energy supply unit comprises a capacitor, whose one end is connected to the power supply and whose other end is connected to the spark plug is connected, a charge switching unit, whose one end with a line between the condenser and the spark plug is connected and the other end is grounded, and an energy supply switching unit, whose one end with a line between the condenser and the power supply is connected and the other end is grounded. Thanks to this configuration, a spark discharge and a plasma with the use of the center electrode as a negative electrode can be produced and the time lapse for the supply of electrical energy and the time lapse for the loading can be adjusted.