| 摘要 |
<p>A variable valve driving apparatus of an internal combustion engine, including a drive shaft rotatably supported by a cam bracket, a drive cam disposed about an outer periphery of the drive shaft, a link arm having a first end connected to the drive cam, an oscillating cam extending from the drive cam configured to press and release a drive valve of the engine to open and close the drive valve, a link rod having a first end rotatably connected to the oscillating cam, and a control shaft rotatably supported by the cam bracket. The control shaft includes a main shaft rotatably supported by the cam bracket, an eccentric shaft spaced apart from the main shaft, and a plurality of webs connecting the main shaft and the eccentric shaft. The eccentric shaft is connected to an oscillating arm configured to transfer a drive force of the drive cam. The oscillating arm has a first portion rotatably connected to a second end of the link arm and a second portion rotatably connected to a second end of the link rod, the first and second portions being spaced apart axially with respect to the eccentric shaft. A first flow path for supplying lubricant to a first sliding contact area between the oscillating arm and the eccentric shaft is formed through the control shaft. The first flow path extends from the main shaft to the eccentric shaft through a web located beside the second portion of the oscillating arm.</p> |
