{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreifg7xag3bfeed7h73j6tl7lsw6be655cddvvg652egxluwghfqgqe"
    },
    "mimeType": "image/png",
    "size": 98702
  },
  "description": "An air-fuel ratio control system includes an internal combustion engine configured to combust gaseous fuel, an admission value configured to provide gaseous fuel to the internal combustion engine, and a three-way catalyst connected to the internal combustion engine to receive exhaust formed by…",
  "path": "/patents/1423256",
  "publishedAt": "2026-06-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/0295",
    "Caterpillar Inc."
  ],
  "textContent": "An air-fuel ratio control system includes an internal combustion engine configured to combust gaseous fuel, an admission value configured to provide gaseous fuel to the internal combustion engine, and a three-way catalyst connected to the internal combustion engine to receive exhaust formed by combustion of the gaseous fuel with the internal combustion engine. The system also includes a sensor connected upstream or downstream of the three-way catalyst and a controller configured to: generate commands for controlling the admission valve, receive oxygen content signals or NOx content signals output from the sensor, and determine, with a perturbation-based control algorithm and based on the oxygen content signals or NOx content signals, commands for controlling an air-fuel ratio of the internal combustion engine, including commands for controlling the admission valve.",
  "title": "SYSTEM AND METHOD FOR ADAPTIVE CONTROL OF AIR-TO-FUEL RATIO"
}