{
  "$type": "site.standard.document",
  "description": "A PM accumulation amount estimation device 50 is provided with an exhaust amount computation means 51 for computing PM exhaust amount which is discharged in an exhaust gas passage 3, and a passive regeneration amount computation means 52 for computing a PM regeneration amount in a DPF 7, and is…",
  "path": "/patents/969762",
  "publishedAt": "2014-09-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N11/00",
    "MITSUBISHI HEAVY IND LTD [JP]"
  ],
  "textContent": "A PM accumulation amount estimation device 50 is provided with an exhaust amount computation means 51 for computing PM exhaust amount which is discharged in an exhaust gas passage 3, and a passive regeneration amount computation means 52 for computing a PM regeneration amount in a DPF 7, and is configured to estimate the PM accumulation amount in the DPF 7 from the difference between the PM exhaust amount computed by the exhaust amount computation means 51 and the PM regeneration amount computed by the passive regeneration amount computation means 52. The PM accumulation amount estimation device 50 is further configured such that, when an abnormality is found in an airflow meter 31, the PM regeneration amount from NO 2 is computed, and the PM accumulation amount in the DPF is estimated, without using the airflow amount measured by the airflow meter 31.",
  "title": "DPF PM ACCUMULATION QUANTITY ESTIMATION DEVICE"
}