{
  "$type": "site.standard.document",
  "description": "A fuel injector for use in delivering fuel to an internal combustion engine comprises a nozzle having a valve needle which is moveable with respect to a valve needle seating through a range of movement between a fully-closed position and a fully-open position to control fuel delivery through at…",
  "path": "/patents/1014912",
  "publishedAt": "2011-03-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M47/02",
    "DELPHI TECHNOLOGIES HOLDING [LU]"
  ],
  "textContent": "A fuel injector for use in delivering fuel to an internal combustion engine comprises a nozzle having a valve needle which is moveable with respect to a valve needle seating through a range of movement between a fully-closed position and a fully-open position to control fuel delivery through at least one nozzle outlet, whereby movement of the nozzle needle is controlled by fuel pressure within a control chamber (18). A nozzle control valve (10, 32a, 32b) controls fuel flow into and out of the control chamber (18) to pressurise and depressurise the control chamber, respectively. The fuel injector further comprises a variable flow passage means (52, 44, 46) in communication with the control chamber (18) through which fuel flows out of the control chamber (18) at a variable rate throughout the range of movement of the valve needle so that movement of the valve needle is damped to a greater extent as it approaches the fully-open position.",
  "title": "Fuel injector"
}