{
  "$type": "site.standard.document",
  "description": "An exhaust gas purifying device performs a diagnosis of operational normality or abnormality of a catalyst on the basis of a change in catalyst temperature due to an increase in the reduction substance content of exhaust gas which is caused by implementing post fuel injection near TDC of a…",
  "path": "/patents/1108608",
  "publishedAt": "2001-11-14T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N11/002",
    "MAZDA MOTOR [JP]"
  ],
  "textContent": "An exhaust gas purifying device performs a diagnosis of operational normality or abnormality of a catalyst on the basis of a change in catalyst temperature due to an increase in the reduction substance content of exhaust gas which is caused by implementing post fuel injection near TDC of a compression stroke following main fuel injection. The timing of post fuel injection is set at a rotational angle of crankshaft between 30• and 210• after TDC of the compression stroke in order to provide a rise in temperature of the catalyst without increasing the amount of post fuel injection.",
  "title": "Exhaust gas purifying device for internal combustion engine"
}