{
  "$type": "site.standard.document",
  "description": "The method involves guiding exhaust gas (PM) produced by an internal combustion engine (10) via a particulate filter (20) and a three-way catalytic coating (22). Air-fuel mixture supplied to the engine is adjusted to an air-fuel ratio with an average lambda value (lambdam). The air-fuel ratio with…",
  "path": "/patents/1003617",
  "publishedAt": "2012-04-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N13/009",
    "VOLKSWAGEN AG [DE]"
  ],
  "textContent": "The method involves guiding exhaust gas (PM) produced by an internal combustion engine (10) via a particulate filter (20) and a three-way catalytic coating (22). Air-fuel mixture supplied to the engine is adjusted to an air-fuel ratio with an average lambda value (lambdam). The air-fuel ratio with predetermined oscillation frequency and amplitude is deflected around the average value in a periodic alternating manner toward a low lambda value (lambdaM) and a high lambda value (lambdaF), where the frequency and amplitude are selected such that the filter is quasi-continuously regenerated. An independent claim is also included for a control device for controlling an operation of an internal combustion engine.",
  "title": "Method for operating a combustion engine and device for implementing the method"
}