{
  "$type": "site.standard.document",
  "description": "An abnormality in an exhaust system component disposed at the downstream side of a particulate filter (4) is determined by using a differential pressure sensor (5) for measuring a differential pressure between a pressure of exhaust gas at the upstream side of the particulate filter (4) and an…",
  "path": "/patents/938335",
  "publishedAt": "2016-08-31T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N11/00",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "An abnormality in an exhaust system component disposed at the downstream side of a particulate filter (4) is determined by using a differential pressure sensor (5) for measuring a differential pressure between a pressure of exhaust gas at the upstream side of the particulate filter (4) and an atmospheric pressure. In an abnormality determination system for an exhaust device according to the present disclosure, a differential pressure at a second flow rate of the exhaust gas different from a first flow rate of the exhaust gas is estimated based on a first actual differential pressure which is a differential pressure measured by the differential pressure sensor (5) and the first flow rate of the exhaust gas which is a flow rate of the exhaust gas at the time when the first actual differential pressure is measured, and when a difference between a second actual differential pressure, which is measured by the differential pressure sensor (5) at the time when the actual flow rate of the exhaust gas is the second flow rate of the exhaust gas, and an estimated differential pressure is equal to or greater than a predetermined threshold value, a determination is made that the exhaust system component at the downstream side of the particulate filter (4) is abnormal.",
  "title": "ABNORMALITY DETERMINATION SYSTEM FOR AN EXHAUST DEVICE"
}