{
  "$type": "site.standard.document",
  "description": "A method according to the present invention is for heating exhaust gas to be introduced into an exhaust-gas purifying device (26) from an internal combustion engine by supplying fuel into an exhaust passage (23a) from a fuel supply valve (27a) disposed upstream of the exhaust gas purifying device…",
  "path": "/patents/967520",
  "publishedAt": "2014-11-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N13/0097",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "A method according to the present invention is for heating exhaust gas to be introduced into an exhaust-gas purifying device (26) from an internal combustion engine by supplying fuel into an exhaust passage (23a) from a fuel supply valve (27a) disposed upstream of the exhaust gas purifying device (26) in an exhaust pipe (23) upstream of the exhaust gas purifying device (26), and then by heating and igniting the fuel added into the exhaust passage (23a), and includes the steps of determining a necessity for supplying fuel into the exhaust passage (23a), setting an amount of fuel to be supplied into the exhaust passage (23a) from the fuel supply valve (27a), the amount being set when it is judged in the determining step that fuel needs to be supplied into the exhaust passage (23a), checking an operating state of the internal combustion engine, and controlling an air-fuel ratio of exhaust gas to be released into the exhaust passage (23a) from a combustion chamber of the internal combustion engine such that the air-fuel ratio falls within a region where amounts of both smoke and HC to be generated in the exhaust gas flowing through the exhaust passage (23a) are low in the operating state of the internal combustion engine checked in the checking step.",
  "title": "EXHAUST HEATING METHOD"
}