{
  "$type": "site.standard.document",
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  "description": "A method of detecting a tire having a decreased internal pressure by making a relative comparison among wheel speeds of tires attached to the respective wheels. The method includes a step of detecting wheel rotation information regarding the respective tires of the vehicle; a step of calculating…",
  "path": "/patents/1007563",
  "publishedAt": "2011-11-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C23/061",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "A method of detecting a tire having a decreased internal pressure by making a relative comparison among wheel speeds of tires attached to the respective wheels. The method includes a step of detecting wheel rotation information regarding the respective tires of the vehicle; a step of calculating wheel speeds based on the detected wheel rotation information; a step of calculating a decreased pressure determination value by relative comparison of the calculated wheel speeds; and a step of determining, when the resultant decreased pressure determination value exceeds a predetermined threshold value, that a tire has a decreased internal pressure. The method further includes a threshold value setting step of setting the predetermined threshold value based on, when assuming that a value of wheel speed comparison between a front wheel speed and a rear wheel speed is DEL2, (a) a relation obtained in advance, depending on a difference of the mass of the vehicle, between DEL2 and a load sensitivity during a vehicle turning, and (b) a load sensitivity obtained by a turning at the time of determination.",
  "title": "Method and apparatus for detecting tire having decreased internal pressure, and program for detecting tire having decreased internal pressure"
}