{
  "$type": "site.standard.document",
  "description": "Provided is an SCR system that enables reduction in burden on a battery resulting from energization of a heater and a decrease in time during which an NOx concentration cannot be detected. The SCR system includes: an SCR device 103; a dosing valve 104; NOx sensors 110 and 111; an urea solution…",
  "path": "/patents/992018",
  "publishedAt": "2013-04-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N3/2066",
    "ISUZU MOTORS LTD [JP]"
  ],
  "textContent": "Provided is an SCR system that enables reduction in burden on a battery resulting from energization of a heater and a decrease in time during which an NOx concentration cannot be detected. The SCR system includes: an SCR device 103; a dosing valve 104; NOx sensors 110 and 111; an urea solution injection control unit 1; electric heaters 2 and 3 for raising respective temperatures of the NOx sensors 110 and 111 to a sensor operating temperature; and an energization permission unit 4 that prohibits energization of the heaters 2 and 3 at the time of an start of an engine and permits energization of the heaters 2 and 3 when an engine revolutions becomes equal to or exceeds a preset energization permission threshold value v1 and such state lasts for a period of time equal to or exceeding a preset stabilization wait time t1.",
  "title": "SCR SYSTEM"
}