{
  "$type": "site.standard.document",
  "description": "Provided is an exhaust purification device for an internal combustion engine, wherein the operation of an internal combustion engine can be prevented from being maintained when a particulate filter is melted. An exhaust purification device (1) for an internal combustion engine (2) is comprised of a…",
  "path": "/patents/1005924",
  "publishedAt": "2012-01-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N11/002",
    "YANMAR CO LTD [JP]"
  ],
  "textContent": "Provided is an exhaust purification device for an internal combustion engine, wherein the operation of an internal combustion engine can be prevented from being maintained when a particulate filter is melted. An exhaust purification device (1) for an internal combustion engine (2) is comprised of a particulate filter (10); a downstream-side temperature sensor (20a) which detects a downstream-side exhaust temperature (T1); a filter temperature sensor (20b) which detects a filter temperature (T10); an exhaust differential pressure detection device (21) which calculates an exhaust differential pressure (P(n)) between an upstream-side exhaust pressure (p1) and a downstream-side exhaust pressure (p2) at predetermined time intervals; a notification device (40); and an ECU (30) which controls the internal combustion engine (2). In the exhaust purification device (1), a differential pressure variation (dP) is calculated on the basis of a first exhaust differential pressure (P(n-1)) and a second exhaust differential pressure (P(n)) after the elapse of a predetermined period of time. When the differential pressure variation (dP) is equal to or larger than a reference variation (Ps) or the downstream-side exhaust temperature (T1) remains equal to or larger than an exhaust reference temperature (T1s) for a period of time equal to or longer than a reference period of time (ts), a demand to stop operating the internal combustion engine (2) is notified, or the operation is stopped.",
  "title": "EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE"
}