{
  "$type": "site.standard.document",
  "description": "A NOx sensor diagnosis device which can diagnose validity of a NOx sensor by considering an environmental condition and can prevent erroneous diagnosis and an SCR system are provided. In a NOx sensor diagnosis device provided in an exhaust pipe 102 of an engine E and diagnosing a NOx sensor 110…",
  "path": "/patents/990171",
  "publishedAt": "2013-06-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N11/00",
    "ISUZU MOTORS LTD [JP]"
  ],
  "textContent": "A NOx sensor diagnosis device which can diagnose validity of a NOx sensor by considering an environmental condition and can prevent erroneous diagnosis and an SCR system are provided. In a NOx sensor diagnosis device provided in an exhaust pipe 102 of an engine E and diagnosing a NOx sensor 110 that detects NOx concentration in an exhaust gas, a diagnosis prohibition determination unit 4 is provided that prohibits diagnosis of the NOx sensor 110 during DPF (diesel particulate filter) regeneration, during PTO (power take-off) operation or during exhaust brake operation.",
  "title": "NOX SENSOR DIAGNOSIS DEVICE AND SCR SYSTEM"
}