{
  "$type": "site.standard.document",
  "description": "An exhaust system, may include a trapping filter (150), a nitrogen oxide purification catalyst (130) to eliminate nitrogen oxide of the exhaust gas, an injector (120) that selectively injects fuel in the exhaust line, a fuel cracking catalyst (140) that is disposed between the injector (120) and…",
  "path": "/patents/1013256",
  "publishedAt": "2011-05-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N11/00",
    "HYUNDAI MOTOR CO LTD [KR]"
  ],
  "textContent": "An exhaust system, may include a trapping filter (150), a nitrogen oxide purification catalyst (130) to eliminate nitrogen oxide of the exhaust gas, an injector (120) that selectively injects fuel in the exhaust line, a fuel cracking catalyst (140) that is disposed between the injector (120) and the trapping filter (150) at the exhaust line, transforms the injected fuel to a reducing agent, and a control portion that controls the injector (120) to inject a predetermined amount of the fuel for a predetermined time period so as to raise the temperature of the trapping filter (150) to a predetermined regeneration temperature and eliminate the particulate material trapped in the trapping filter (150), wherein the control portion detects a degradation rate of the fuel cracking catalyst (140), and varies the predetermined regeneration temperature of the trapping filter (150) depending on the degradation rate.",
  "title": "Exhaust system"
}