{
  "$type": "site.standard.document",
  "description": "A control unit (40) for an exhaust gas recirculation control system (30) compares an actual intake air quantity GN with a predetermined quantity GNC1 when an engine (10) is in a stable idling state (steps S100,S110). Then, presuming there is a t endency for the amount of recirculated exhaust gas…",
  "path": "/patents/1091551",
  "publishedAt": "2003-11-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/0055",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "A control unit (40) for an exhaust gas recirculation control system (30) compares an actual intake air quantity GN with a predetermined quantity GNC1 when an engine (10) is in a stable idling state (steps S100,S110). Then, presuming there is a t endency for the amount of recirculated exhaust gas from the exhaust gas recirculation control system (30) to be less than a reference amount corresponding to the stable idling state, a recirculated exhaust gas insufficient flag XS is set to \"ON\" (step S140) after the actual intake air quantity GN has exceeded the predetermined quantity GNC1 for a predetermined period of time (steps S120,S130). The control unit (40) th en makes a condition for making a positive diagnosis more difficult to fulfill so that it is more difficult to make a positive diagnosis when the recirculated exhaust gas insufficient flag XS is set to \"ON.\"",
  "title": "Abnormality diagnostic method for exhaust gas recirculation control system"
}