{
  "$type": "site.standard.document",
  "description": "When an air-fuel ratio detection performed by detecting an output of a downstream sensor (10), which is a limiting-current type air-fuel ratio sensor arranged at a downstream side of a catalyst (6) in an exhaust passage (4) of an internal combustion engine (2), and calculating an air-fuel ratio at…",
  "path": "/patents/969432",
  "publishedAt": "2014-10-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N3/101",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "When an air-fuel ratio detection performed by detecting an output of a downstream sensor (10), which is a limiting-current type air-fuel ratio sensor arranged at a downstream side of a catalyst (6) in an exhaust passage (4) of an internal combustion engine (2), and calculating an air-fuel ratio at the downstream side of the catalyst (6) in accordance with the output, if the output is within a predetermined range including an output corresponding to a theoretical air-fuel ratio, a relationship between the output and an air-fuel ratio that is calculated by calculation means is shifted more to a rich side relative to a correspondence relationship between an output of an upstream sensor (10), which is a similar sensor to the downstream sensor (10) arranged at an upstream side of the catalyst in the exhaust passage (4) of the engine (2), and an air-fuel ratio.",
  "title": "AIR-FUEL RATIO DETECTION DEVICE AND AIR-FUEL RATIO DETECTION METHOD"
}