{
  "$type": "site.standard.document",
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  "description": "The present disclosure provides an electrically-controlled monolithic high-pressure oil pump for a marine low-speed engine, to improve the oil inlet throttling and inlet oil pressure stability of the high-pressure oil pump. It comprises: a pump body, a pump cover, an oil inlet-outlet valve…",
  "path": "/patents/1422260",
  "publishedAt": "2022-08-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M53/00",
    "CHONGQING HONGJIANG MACHINERY CO LTD [CN]"
  ],
  "textContent": "The present disclosure provides an electrically-controlled monolithic high-pressure oil pump for a marine low-speed engine, to improve the oil inlet throttling and inlet oil pressure stability of the high-pressure oil pump. It comprises: a pump body, a pump cover, an oil inlet-outlet valve assembly, a plunger couple, a plunger spring, a lower spring seat assembly, a guide piston assembly and an electrically-controlled proportional valve, wherein the oil inlet-outlet valve assembly comprises: an oil inlet valve assembly and an oil outlet valve assembly; the oil inlet valve assembly comprises: an oil inlet valve seat, an oil inlet valve and an oil inlet valve spring; the oil outlet valve assembly comprises: an oil outlet valve seat, an oil outlet valve, an oil outlet valve spring and an oil outlet valve spring seat; a high-pressure oil outlet chamber is formed between the oil outlet valve seat and the oil inlet valve seat; a high-pressure oil chamber is formed in the plunger couple, and the high-pressure oil chamber communicates with the high-pressure oil outlet chamber through a first oil hole of the oil inlet valve on the oil inlet valve seat; the electrically-controlled proportional valve communicates with an oil inlet hole of the oil inlet valve seat through the first oil hole on the pump body, and the oil inlet hole of the oil inlet valve seat communicates with or is disconnected from the high-pressure oil chamber; the electrically-controlled proportional valve is provided thereon with a cooling circulation oil passage communicating with a cooling oil passage of the pump body, and the cooling circulation oil passage can cool armature and coil of the proportional valve.",
  "title": "ELECTRICALLY-CONTROLLED MONOLITHIC HIGH-PRESSURE OIL PUMP FOR MARINE LOW-SPEED ENGINE"
}