{
  "$type": "site.standard.document",
  "description": "The invention relates to a method for regeneration of a nitrogen oxide storage catalyst (160) for a direct injected compression ignition engine comprising a controllable fuel injection system (170) and means (120, 125, 140) for controlling swirl ratio. According to the invention, there is provided…",
  "path": "/patents/1067746",
  "publishedAt": "2006-05-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B31/04",
    "FORD GLOBAL TECH LLC [US]"
  ],
  "textContent": "The invention relates to a method for regeneration of a nitrogen oxide storage catalyst (160) for a direct injected compression ignition engine comprising a controllable fuel injection system (170) and means (120, 125, 140) for controlling swirl ratio. According to the invention, there is provided the consecutive steps of: activating the swirl increasing means (120, 125, 140); and controlling the controllable fuel injection means to give a number of small part-injections during an expansion stroke of an engine cylinder.",
  "title": "Method and combustion system for improving combustion characteristics for a direct injected compression ignition engine"
}