{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "The valve (1) has a venturi control unit (2) in which a flap shaft (3) is supported. A flap (4) is symmetrically arranged on the shaft in an inclined manner so that the flap is attached at an inner side (6) of the control unit in a closed condition of the valve. The flap and flow cross-section of…",
  "path": "/patents/1016362",
  "publishedAt": "2011-01-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D9/1015",
    "PIERBURG GMBH [DE]"
  ],
  "textContent": "The valve (1) has a venturi control unit (2) in which a flap shaft (3) is supported. A flap (4) is symmetrically arranged on the shaft in an inclined manner so that the flap is attached at an inner side (6) of the control unit in a closed condition of the valve. The flap and flow cross-section of the control unit are elliptically designed, where main and secondary axes of the elliptical flap are larger than main and secondary axes of the elliptical flow cross-section of the control unit, respectively. The secondary axis of the flap is smaller than the main axis of the flow cross-section.",
  "title": "Flap valve for a combustion engine"
}