| 摘要 |
PURPOSE: A dual valve timing device with an eccentric shaft and self-locking is provided to improve engine efficiency, and to prevent exhaust gas from flowing backward. CONSTITUTION: A dual valve timing device with an eccentric shaft and self-locking comprises an eccentric shaft(230), a driving disk(220), a fixed shaft(250), a working cylinder, and a roller(200). The eccentric shaft is fixed to a tappet bracket(100). The eccentric shaft is eccentrically fixed to the working disk, and the bearing is integrally formed. The fixed shaft is fixed through the hole of the driving disk from the opposite side to the eccentric shaft. The fixed shaft is connected to the working cylinder, and the driving disk is rotated at a constant angle. The bearing is fixed inside the roller, and the roller idly rotates around the bearing. The roller contacts with a cam into a cylindrical shape. |
