{
  "$type": "site.standard.document",
  "description": "In a self-igniting possible range, both intake and exhaust valves (6),(7) are placed in a closure condition for a period from the end of an exhaust stroke and the beginning of an intake stroke for establishing a negative overlap period in which a residual gas is pressurized to increase its…",
  "path": "/patents/1106090",
  "publishedAt": "2002-03-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B1/12",
    "FUJI HEAVY IND LTD [JP]"
  ],
  "textContent": "In a self-igniting possible range, both intake and exhaust valves (6),(7) are placed in a closure condition for a period from the end of an exhaust stroke and the beginning of an intake stroke for establishing a negative overlap period in which a residual gas is pressurized to increase its temperature, thus raising the air-fuel mixture temperature in a combustion chamber (3) up to a compression ignition possible temperature. In addition, when a crank angle reaches a predetermined crank angle in the first half of an intake stroke, a fuel is injected from an in-cylinder injector (11) into the combustion chamber (3). This fuel injected becomes a premixed air-fuel because of being evaporated by the gas temperature in the combustion chamber (3), and on shifting to a compression stroke afterwards, the temperature in the combustion chamber (3) reaches the compression ignition possible temperature.",
  "title": "Self-igniting engine"
}