{
  "$type": "site.standard.document",
  "description": "The device has a piezoelectric or magnetostrictive actuator (2) that actuates a valve closure body (22) on a valve needle (15) via a hydraulic coupler (10). The closure body interacts with a valve seat surface (23) to form a seal seat. The coupler has sender and receiver pistons (9,12) in a guide…",
  "path": "/patents/1088256",
  "publishedAt": "2004-04-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M51/0603",
    "BOSCH GMBH ROBERT [DE]"
  ],
  "textContent": "The device has a piezoelectric or magnetostrictive actuator (2) that actuates a valve closure body (22) on a valve needle (15) via a hydraulic coupler (10). The closure body interacts with a valve seat surface (23) to form a seal seat. The coupler has sender and receiver pistons (9,12) in a guide sleeve (13) and separated by a coupler gap (11). The sender piston (9) and/or receiver piston (12) have a choke bore (19) forming a filling valve (18) for the coupler gap together with a valve body (20) and a valve seat (21).",
  "title": "Fuel injection valve"
}