{
  "$type": "site.standard.document",
  "description": "There is provided a fuel supply pump in which even when a tappet slides at high speed, a sliding balance of the tappet is maintained and improved durability is achieved by preventing one-sided contact between the tappet and a cylinder hole. The fuel supply pump includes a cylinder head that is…",
  "path": "/patents/968088",
  "publishedAt": "2014-10-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M59/102",
    "BOSCH CORP [JP]"
  ],
  "textContent": "There is provided a fuel supply pump in which even when a tappet slides at high speed, a sliding balance of the tappet is maintained and improved durability is achieved by preventing one-sided contact between the tappet and a cylinder hole. The fuel supply pump includes a cylinder head that is fitted to a cylinder hole formed in a pump housing, a plunger that is slidably fitted to a sliding hole of the cylinder head, a tappet that is slidably fitted to the cylinder hole, a cam shaft that is rotatably supported in a cam chamber formed inside the pump housing so as to communicate with the cylinder hole, a cam that is formed integrally with the cam shaft, and a plunger spring that is interposed between the cylinder head and the tappet. The tappet is configured to have a cylindrical tappet body and a roller, and a cylindrical guide ring is fixed into the cylinder hole. In the tappet body and a cylindrical portion of the guide ring, a tappet side guide portion and a guide ring side guide portion which can be fitted thereto in an axial direction are provided in at least two locations at equal intervals.",
  "title": "FUEL SUPPLY PUMP"
}