{
  "$type": "site.standard.document",
  "description": "An electromagnetic fuel injection valve () is provided which suppresses overshoot and overshoot return, and reduces fluid pressure acting on a valve body () as much as possible. In the electromagnetic fuel injection valve (), lift of the valve body () to valve opening position performed against…",
  "path": "/patents/1381761",
  "publishedAt": "2026-04-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M61/20",
    "HITACHI ASTEMO, LTD."
  ],
  "textContent": "An electromagnetic fuel injection valve () is provided which suppresses overshoot and overshoot return, and reduces fluid pressure acting on a valve body () as much as possible. In the electromagnetic fuel injection valve (), lift of the valve body () to valve opening position performed against urging force of a return spring () in accordance with excitation of a coil is achieved by settling overshoot and overshoot return caused at that time. A small pitch part () of the return spring () exhibits a totally compressed state when lift amount of the valve body () is equal to or greater than a first lift amount smaller than valve opening lift amount corresponding to the valve opening position. A large pitch part (18) acts when the lift amount is equal to or greater than a second lift amount which is ½ or less of the valve opening lift amount.",
  "title": "ELECTROMAGNETIC FUEL INJECTION VALVE"
}