{
  "$type": "site.standard.document",
  "description": "A glow plug deterioration determination system 1 includes: a glow plug 40; a GCU 30 that controls energization of the glow plug 40 from a power supply 10 by driving switch means T 1 to T 4 to open and close in accordance with a drive signal SI issued by an ECU 20; a self-diagnosis unit (DIU) 32…",
  "path": "/patents/1015224",
  "publishedAt": "2011-03-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02P19/027",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "A glow plug deterioration determination system 1 includes: a glow plug 40; a GCU 30 that controls energization of the glow plug 40 from a power supply 10 by driving switch means T 1 to T 4 to open and close in accordance with a drive signal SI issued by an ECU 20; a self-diagnosis unit (DIU) 32 that detects an abnormality between the glow plug 40, the switch means T 1 to T 4 , and the GCU 30 and transmits a self-diagnosis signal DI to the ECU 20; and current detecting means S 1 to S 4 for detecting a plug current I GL flowing through the glow plug 40, wherein the DIU 32 includes deterioration level determining means 330 for determining whether the glow plug 40 is in a deteriorated condition by comparing a plug current converted voltage Vi that is proportionate to the plug current I GL with a plurality of voltage thresholds Vref 1 to Veef n .",
  "title": "Glow plug deterioration determination system"
}