{
  "$type": "site.standard.document",
  "description": "An intake port structure (1) includes a collector passageway (2) disposed in an upstream section and the first and second branching passageways (3 and 4) disposed in a downstream section that branch from the collector passageway (2). The intake port structure (1) further includes an intake air flow…",
  "path": "/patents/1076254",
  "publishedAt": "2005-06-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02F1/4235",
    "NISSAN MOTOR [JP]"
  ],
  "textContent": "An intake port structure (1) includes a collector passageway (2) disposed in an upstream section and the first and second branching passageways (3 and 4) disposed in a downstream section that branch from the collector passageway (2). The intake port structure (1) further includes an intake air flow impact section (11) formed on a crotch portion (10) between first and second branching passageways (3 and 4) against which a portion of an intake air flow from the collector passageway (2) collides such that the portion of the intake air flow is dispersed laterally toward both sides of the intake air flow impact section (11). The intake air flow impact section (11) is recessed to stem portions (6a and 7a) of first and second intake valves (6 and 7), and includes first and second impact surfaces (11a and 11b). The second impact surface (11b) is formed along the stem portions (6a and 7a) of the intake valves (6 and 7). A fuel spray from a fuel injector (5) is atomized when mixed with the dispersed intake air flow in the first and second branching passageways (3 and 4).",
  "title": "Intake port structure for internal combustion engine"
}