{
  "$type": "site.standard.document",
  "description": "The device has a piezo-actuator, a hydraulic converter with two pistons, a pressure chamber filled with fluid, a control valve and a filling device for replacing fluid lost by leakage in the pressure chamber. The filling device has a filling chamber filled with fluid; pressure chamber leakage…",
  "path": "/patents/1101663",
  "publishedAt": "2002-09-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M47/027",
    "BOSCH GMBH ROBERT [DE]"
  ],
  "textContent": "The device has a piezo-actuator, a hydraulic converter with two pistons, a pressure chamber filled with fluid, a control valve and a filling device for replacing fluid lost by leakage in the pressure chamber. The filling device has a filling chamber filled with fluid; pressure chamber leakage losses during hydraulic converter restoring movement resulting from a displacement effect of the first piston are replaced by fluid from the filling chamber. The device has a piezo-actuator (2), a hydraulic converter (3) with first and second pistons (4,5), a pressure chamber (6) between the pistons filled with fluid, a control valve (15) and a filling device (11,12) for replacing the fluid lost by leakage in the pressure chamber. The filling device has a filling chamber (11) filled with fluid, whereby leakage losses in the pressure chamber during restoring movement of the hydraulic converter resulting from a displacement effect of the first piston are replaced by fluid from the filling chamber.",
  "title": "Fluid control valve"
}