{
  "$type": "site.standard.document",
  "description": "A pump control valve contained in a high-pressure fuel pump is closed when an engine is stopped, so that the pressure of a common rail is prevented from becoming too high when the engine speed NE is not less than a predetermined value alpha . The pump control valve is opened when the engine speed…",
  "path": "/patents/1089086",
  "publishedAt": "2004-03-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/042",
    "DENSO CORP [JP]"
  ],
  "textContent": "A pump control valve contained in a high-pressure fuel pump is closed when an engine is stopped, so that the pressure of a common rail is prevented from becoming too high when the engine speed NE is not less than a predetermined value alpha . The pump control valve is opened when the engine speed NE is decreased to a predetermined value alpha . Consequently, a predetermined amount of fuel is stored in the pump because the high-pressure fuel pump sucks fuel but does not deliver the fuel to the common rail. Therefore, a lack of fuel being delivered at early stage of startup is prevented because the fuel stored in the pump can be delivered to the common rail in a subsequent startup of the engine. Thus, the pressure of fuel necessary to start the engine can be obtained in a short time, and the time for startup can be decreased.",
  "title": "ACCUMULATING FUEL INJECTOR"
}