{
  "$type": "site.standard.document",
  "description": "A high-response and high-power electromagnetically driven flow rate control valve which is compact has a simple structure and a high-pressure fuel supply pump having the same mounted thereon are provided. A flange portion forming an attracting surface on an anchor, a first peripheral surface…",
  "path": "/patents/994162",
  "publishedAt": "2013-01-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M59/366",
    "HITACHI AUTOMOTIVE SYSTEMS LTD [JP]"
  ],
  "textContent": "A high-response and high-power electromagnetically driven flow rate control valve which is compact has a simple structure and a high-pressure fuel supply pump having the same mounted thereon are provided. A flange portion forming an attracting surface on an anchor, a first peripheral surface portion having a diameter smaller than the flange portion, and a cylindrical non-magnetic area opposing an outer peripheral surface of the flange portion with a third clearance interposed therebetween are provided, and a first fluid trap portion communicating with the back pressure chamber via the third clearance is provided. In this configuration, when the diameter of the flange portion is enlarged in order to enlarge the cross-sectional area of the attracting surface, fuel that is displaced by the anchor is increased, but is partly absorbed in the first fluid trap portion, so that the fuel passing through the fuel channel does not increase in comparison with fuel before the diameter of the flange portion is enlarged. Accordingly, the cross-sectional area of the attracting surface may be enlarged without enlarging the fuel channel, increase in magnetic resistance generated in the fuel channel is reduced, and improvement of the attracting force is efficiently achieved.",
  "title": "ELECTROMAGNETIC FLOW CONTROL VALVE AND HIGH PRESSURE FUEL SUPPLY PUMP USING SAME"
}