{
  "$type": "site.standard.document",
  "description": "The method involves operating an exhaust aftertreatment system (1) in a combustion engine operated with an air overflow, where the separation of sooty particles from the exhaust gas takes place by a particle filter (5). The ammonia- to mono nitrogen oxide-ratio such as feed ratio is varied phase…",
  "path": "/patents/983884",
  "publishedAt": "2013-10-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D53/9477",
    "MAN TRUCK & BUS AG [DE]"
  ],
  "textContent": "The method involves operating an exhaust aftertreatment system (1) in a combustion engine operated with an air overflow, where the separation of sooty particles from the exhaust gas takes place by a particle filter (5). The ammonia- to mono nitrogen oxide-ratio such as feed ratio is varied phase wise by changing the nitrogen oxide-exhaust gas emission before the catalytic converter or the associated reduction agent quantity, such that the feed ratio phase-wise oscillates between values more than one and values lesser than one. The soot separated on the particle filter or a selective catalytic reduction-catalyst placed on the particle filter, particularly a vanadium oxide containing or zeolite containing Selective catalytic reduction-catalyst is used as catalytic active material. An independent claim is included for an arrangement with an ammonia-storage capacity.",
  "title": "Method for use in connection with an exhaust gas after-treatment system"
}