{
  "$type": "site.standard.document",
  "description": "In a valve-operating system (D) for an internal combustion engine including a main valve lifter (11) lifted and lowered along with a valve (3), a subsidiary valve lifter (12) movable relative to the main valve lifter (11), a cam (15) for a low-speed capable of operating the main valve lifter (11)…",
  "path": "/patents/1099476",
  "publishedAt": "2003-01-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01L1/143",
    "HONDA MOTOR CO LTD [JP]"
  ],
  "textContent": "In a valve-operating system (D) for an internal combustion engine including a main valve lifter (11) lifted and lowered along with a valve (3), a subsidiary valve lifter (12) movable relative to the main valve lifter (11), a cam (15) for a low-speed capable of operating the main valve lifter (11) in a direction to open the valve, a cam (16) for a high-speed capable of operating the subsidiary valve lifter (12) in a direction to open the valve, and a connecting device (33) switched over between a non-connecting state in which the valve lifters (11, 12) are disconnected from each other, and a connecting state in which the valve lifters (11, 12) are connected to each other, a valve spring (22) for biasing the valve (3) in a closing direction is mounted between the valve (3) and an engine body (1), and a lifter spring (23) for biasing the subsidiary valve lifter (12) toward the cam (16) for the high speed is mounted between the subsidiary valve lifter (12) and the engine body (1). Thus, in a low-speed mode in which the main and subsidiary valve lifters are in their non-connected states, an influence of a load of the lifter spring on the valve can be prevented, and in a high-speed mode in which the main and subsidiary valve lifters are in their connected states, a sum total of loads of the valve spring and the lifter spring can be applied to both of the valve lifters to improve the closing responsiveness of the valve.",
  "title": "VALVE GEAR OF INTERNAL COMBUSTION ENGINE"
}