{
  "$type": "site.standard.document",
  "description": "Exhaust gas temperature (1) is measured. In lean running, this provides an indication of storage catalyst loading. Preferred features: One or more further operational parameters are used in forming the indication of storage catalyst loading. These include time since last rich-to-lean running…",
  "path": "/patents/1087576",
  "publishedAt": "2004-05-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D53/9495",
    "VOLKSWAGEN AG [DE]"
  ],
  "textContent": "Exhaust gas temperature (1) is measured. In lean running, this provides an indication of storage catalyst loading. Preferred features: One or more further operational parameters are used in forming the indication of storage catalyst loading. These include time since last rich-to-lean running transition, torque/Pme fluctuation, or injection timing. Exhaust gas temperature differential, measured between rich- and lean running, gives the required indication. A further parameter employed, is as cited previously. Temperature and temperature gradient of the exhaust gases are measured, the latter forming the required indication. A further operational parameter is selected as before.",
  "title": "Method to control the exhaust gas treating of a direct injection Otto engine and of a lean-burn engine"
}