{
  "$type": "site.standard.document",
  "description": "An ignition system 100 includes an ignition plug 1, a discharge power supply 2 for applying a high voltage to the gap 19 of the ignition plug 1, a high-frequency power supply 3 for supplying a high-frequency current to the gap 19, a matching unit 4 provided between the ignition plug 1 and the…",
  "path": "/patents/974048",
  "publishedAt": "2014-06-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02P23/04",
    "NGK SPARK PLUG CO [JP]"
  ],
  "textContent": "An ignition system 100 includes an ignition plug 1, a discharge power supply 2 for applying a high voltage to the gap 19 of the ignition plug 1, a high-frequency power supply 3 for supplying a high-frequency current to the gap 19, a matching unit 4 provided between the ignition plug 1 and the high-frequency power supply 3, and a mixer 5 through which currents output from the two power supplies 2, 3 flow. An oscillation frequency fs (Hz) which maximizes the current flowing between the matching unit 4 and the mixer 5 when spark discharge is generated and an oscillation frequency fo (Hz) which maximizes the current flowing between the matching unit 4 and the mixer 5 when spark discharge is not generated satisfy a relation fs/fo ¥ 0.85. This allows a current whose oscillation frequency is equal to the oscillation frequency fs to flow between the matching unit 4 and the mixer 5 when spark discharge is not generated.",
  "title": "Ignition system"
}