{
  "$type": "site.standard.document",
  "description": "An engine includes a piston and a casing including a cylinder. The cylinder houses the piston. The cylinder and the piston forms a combustion chamber. The casing has as intake port, a plurality of exhaust ports, a spark plug hole, a drainage hole, and a water jacket. The spark plug hole extends to…",
  "path": "/patents/963795",
  "publishedAt": "2015-01-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01P3/14",
    "YAMAHA MOTOR CO LTD [JP]"
  ],
  "textContent": "An engine includes a piston and a casing including a cylinder. The cylinder houses the piston. The cylinder and the piston forms a combustion chamber. The casing has as intake port, a plurality of exhaust ports, a spark plug hole, a drainage hole, and a water jacket. The spark plug hole extends to the combustion chamber. A spark plug is housed in the spark plug hole. The drainage hole extends from the spark plug hole. The water jacket includes a central passage and an inter-port passage. The central passage is near the spark plug hole. The inter-port passage extends to the central passage. The inter-port passage is formed between the plurality of exhaust ports. The inter-port passage is located between the drainage hole and the cylinder in a central axis direction of the spark plug hole.",
  "title": "Engine and saddle type vehicle"
}