{
  "$type": "site.standard.document",
  "description": "A fuel injector comprises a fuel flow passage about a central axis (2) of the fuel injector, the passage including a valve seat (3) inclined at a first angle to the central axis; and a needle orifice (6); wherein the passage further comprises a first volume between the valve seat and the needle…",
  "path": "/patents/1080091",
  "publishedAt": "2005-02-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M61/18",
    "SIEMENS AG [DE]"
  ],
  "textContent": "A fuel injector comprises a fuel flow passage about a central axis (2) of the fuel injector, the passage including a valve seat (3) inclined at a first angle to the central axis; and a needle orifice (6); wherein the passage further comprises a first volume between the valve seat and the needle orifice; and a first edge (9) between the valve seat and the first volume; wherein the first volume is chosen such that fuel flow remains substantially laminar as it passes over the first edge; the passage further comprising an annulus (10) at the base of the first volume, radially outwardly of the needle orifice, and a second edge (11) between the annulus and the needle orifice; wherein fluid passing over the second edge is caused to cavitate, such that deposits in the needle orifice are substantially removed.",
  "title": "A method of minimizing deposits in a fuel injector"
}