{
  "$type": "site.standard.document",
  "description": "The present invention relates to a high-pressure fuel supply pump (1) comprising a compression chamber (8), a plunger (9) reciprocating in the compression chamber (8) for pressurizing fuel in the compression chamber (8), a discharge valve (10) for discharging pressurized fuel from the compression…",
  "path": "/patents/1013336",
  "publishedAt": "2011-05-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M37/0047",
    "HITACHI LTD [JP]"
  ],
  "textContent": "The present invention relates to a high-pressure fuel supply pump (1) comprising a compression chamber (8), a plunger (9) reciprocating in the compression chamber (8) for pressurizing fuel in the compression chamber (8), a discharge valve (10) for discharging pressurized fuel from the compression chamber (8) to a high-pressure fuel passage (11) of a high-pressure fuel supply system for supplying high-pressure fuel to an internal combustion engine, and a first solenoid actuated valve (SOL1) for connecting and disconnecting a first low-pressure fuel passage (3) and the compression chamber (8), wherein the first solenoid actuated valve (SOL1) is biased by a first biasing member (13) in a closing direction of the first solenoid actuated valve (SOL1), and the first solenoid actuated valve (SOL1) is opened or kept open against the biasing force of the first biasing member (13), when the first solenoid actuated valve (13) is energized. According to the invention, the high pressure fuel supply pump (1) further comprises a second solenoid actuated valve (SOL2) for connecting and disconnecting a second low-pressure fuel passage (4) and the compression chamber (8), wherein the second solenoid actuated valve (SOL2) is configured to be closed, when the second solenoid actuated valve (SOL2) is energized, and the first low-pressure fuel passage (3) and the second low-pressure fuel passage (4) are connected to a low-pressure fuel supply system for supplying low-pressure fuel to the internal combustion engine.",
  "title": "High-pressure fuel supply pump and fuel supply system"
}