{
  "$type": "site.standard.document",
  "description": "The valve (250) has two balls or shutters (251, 252) operating as a non-return valve when the balls held on seats (253, 254) by springs (255, 256) allow the oil in a stage of a multi-stage pressure amplifier (241) to travel towards a high-pressure circuit of a variable compression ratio engine…",
  "path": "/patents/1012564",
  "publishedAt": "2011-06-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B75/045",
    "RABHI VIANNEY [FR]"
  ],
  "textContent": "The valve (250) has two balls or shutters (251, 252) operating as a non-return valve when the balls held on seats (253, 254) by springs (255, 256) allow the oil in a stage of a multi-stage pressure amplifier (241) to travel towards a high-pressure circuit of a variable compression ratio engine hydraulic unit and not return from the high-pressure circuit. The balls allow the oil from a low-pressure circuit to enter the stage and not to re-emerge from the low-pressure circuit. Lifting units (260) lift the balls from the seats and allow the oil to enter and leave the stage of the amplifier.",
  "title": "Electro-hydraulic valve with ball lifting for variable compression ratio engine hydraulic unit"
}