{
  "$type": "site.standard.document",
  "description": "A system includes a variable displacement pump (VDP (102)) in fluid communication with an inlet line (104) and with an outlet line (106). The VDP (102) includes a variable displacement mechanism (108) configured to vary pressure to the outlet line (106). A bypass valve (BPV (108)) includes a BPV…",
  "path": "/patents/1387930",
  "publishedAt": "2026-01-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02C7/22",
    "HAMILTON SUNDSTRAND CORP [US]"
  ],
  "textContent": "A system includes a variable displacement pump (VDP (102)) in fluid communication with an inlet line (104) and with an outlet line (106). The VDP (102) includes a variable displacement mechanism (108) configured to vary pressure to the outlet line (106). A bypass valve (BPV (108)) includes a BPV inlet (110) in fluid communication with the outlet line (106), and a BPV outlet (112) in fluid communication with a bypass line (114) that feeds into the inlet line (104) upstream of the VDP (102). The BPV (108) includes a thermostatic actuator (116) configured to control recirculation flow amount through the BPV (108) based on fluid temperature in the BPV (108). A method includes thermostatically controlling a bypass valve (BPV (108)) to recirculate flow from the outlet line (106) to an input line of the VDP (102) in the event of flow demanded by the downstream system dropping below a predetermined low threshold of flow through the VDP (102) based on fluid temperature in the BPV (108).",
  "title": "DIRECT CONTROLLED VARIABLE DISPLACEMENT PUMPS WITH THERMOSTATICALLY CONTROLLED BYPASS"
}