{
  "$type": "site.standard.document",
  "description": "A control system for an internal combustion engine, which is capable of properly controlling both the temperature of an exhaust system and the air-fuel ratio of exhaust gases even when the control range of the air-fuel ratio of a combustion air-fuel mixture is limited, thereby improving the…",
  "path": "/patents/1014452",
  "publishedAt": "2011-03-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/0235",
    "HONDA MOTOR CO LTD [JP]"
  ],
  "textContent": "A control system for an internal combustion engine, which is capable of properly controlling both the temperature of an exhaust system and the air-fuel ratio of exhaust gases even when the control range of the air-fuel ratio of a combustion air-fuel mixture is limited, thereby improving the reduction of exhaust emissions. In the control system, a demanded torque-calculating section calculates a demanded torque. A first controller calculates a target equivalent ratio such that a DeNOx catalyst temperature converges to a predetermined target temperature. A second controller calculates three feedback correction values such that an output value from an oxygen concentration sensor converges to a target output value. A third controller calculates a torque fuel injection amount for generating the combustion air-fuel mixture, a post fuel injection amount for supplying unburned fuel to a DeNOx catalyst, etc. based on five values.",
  "title": "Control system and method for internal combustion engine"
}