{
  "$type": "site.standard.document",
  "description": "Ceramic heater (1) comprises an insulating ceramic substrate, a resistance heating element and an ion current detecting electrode portion. The detecting electrode portion has at least part of detecting face made of a nonmetallic conductive ceramic having a cationic component of at least one non…",
  "path": "/patents/1101116",
  "publishedAt": "2002-10-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02P19/028",
    "NGK SPARK PLUG CO [JP]"
  ],
  "textContent": "Ceramic heater (1) comprises an insulating ceramic substrate, a resistance heating element and an ion current detecting electrode portion. The detecting electrode portion has at least part of detecting face made of a nonmetallic conductive ceramic having a cationic component of at least one non metallic element. The resistance heating element is buried in the insulating ceramic substrate. The ion current detecting electrode portion is integral with the resistance heating element. Independent claims are also included for: (1) a method of manufacturing the heater, which comprises: preparing a composite shaped body of the structural components described and sintering; (2) a glow plug (50) which comprises a ceramic heater, (3) a housing (4) with a mounting portion formed to hold the ceramic heater and to mount the heater in an internal combustion engine so that the ion current detecting face is positioned in a combustion chamber; and (4) an ion current detecting device, which comprises the glow plug, a heating power source to energize the resistance heating element, an ion generating power source unit to apply voltage to the current detecting electrode portion through the resistance heating element of the plug, a power switch to connect one of the heating power source unit and the ion generating source unit selectively with the glow plug and an ion current detecting portion to detect ion current flow to the detecting electrode portion.",
  "title": "Ceramic heater and its manufacturing method, glow plug and ion current detecting device"
}