{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreidwh2hl6mouebzw6wx2qmmojz7mqg5e2hgi3lsawccuzvzngw5sum"
    },
    "mimeType": "image/png",
    "size": 108465
  },
  "description": "A method for ensuring cold start of an Otto engine operated with ethanol fuel, which has at least one injection valve (10) for metered injection of fuel into the combustion cylinder (12) with a valve member (19) for closing and opening a valve opening (18) and an electric actuator (21) actuating…",
  "path": "/patents/951121",
  "publishedAt": "2015-04-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/0025",
    "BOSCH GMBH ROBERT [DE]"
  ],
  "textContent": "A method for ensuring cold start of an Otto engine operated with ethanol fuel, which has at least one injection valve (10) for metered injection of fuel into the combustion cylinder (12) with a valve member (19) for closing and opening a valve opening (18) and an electric actuator (21) actuating the valve member (19), controlled by a control device (37), is provided, in which thermal energy is generated to form a combustible fuel mixture in the combustion cylinder (12) prior to injection in the injection valve (10) and is supplied to the fuel located in the injection valve (10). In order to avoid installation of additional components in the injection valve (10), the thermal energy required for heating the fuel to evaporation level is obtained from the power loss of the electric actuator (21), by supplying current to the electric actuator (21) in a preliminary phase temporally preceding the cold start in a defined manner such that the actuating force of the actuator (21) acting on the valve member (19) is always smaller than a closing force effective on the valve member (19) for closing the valve opening (18).",
  "title": "Method for ensuring a cold start of a spark ignition engine operated with ethanol fuel"
}