{
  "$type": "site.standard.document",
  "description": "Provided is an exhaust gas purification system that can prevent adhesion of urea water in a dosing valve during DPF regeneration. An exhaust gas purification system 100 includes a DCU 126 that controls a supply module 106 to inject or return urea water inside a dosing valve 104 to a urea tank 105…",
  "path": "/patents/992258",
  "publishedAt": "2013-03-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N13/009",
    "ISUZU MOTORS LTD [JP]"
  ],
  "textContent": "Provided is an exhaust gas purification system that can prevent adhesion of urea water in a dosing valve during DPF regeneration. An exhaust gas purification system 100 includes a DCU 126 that controls a supply module 106 to inject or return urea water inside a dosing valve 104 to a urea tank 105 in order to remove urea water accumulated in the dosing valve 104 when receiving a DPF regeneration authorization request from an ECM 125, and then transmits a DPF regeneration authorization to the ECM 125 when determining that an NH 3 amount of an SCR catalyst is less than or equal to a prescribed value.",
  "title": "EXHAUST GAS PURIFICATION SYSTEM"
}