| 摘要 |
PURPOSE: An engine valve driving device is provided to obtain stable operability and to improve the durability of an engine as the torque of camshaft operates a hydraulic cylinder by being converted into up and down linear motions of a cam circle. CONSTITUTION: An engine valve driving device(100) comprises an operating unit(105) and a hydraulic unit(109). The hydraulic unit generates operating hydraulic pressure using the operating unit, thereby opening or closing a valve. The operating unit comprises an operating plate(111), a curved portion(113), a main shaft(114), an operating shaft(117), a sliding roller(118), and an operating circle(120). The operating plate is mounted on the downside of a cylinder block. The curved portion is formed on one section of the upper part of a sliding hole(112) on the operating plate and controls an opening and closing degree and the opening and closing time of the valve. One end of the main shaft is connected to a driven gear(104), and an operating block(115) is arranged on the other end of the main shaft. The operating shaft is joined to a slide hole(115) of the operating block and slid to the sliding hole by centrifugal force. The sliding roller is joined to the inside of the operating shaft and slid along the sliding hole while being connected adjacent to the sliding hole. The operating circle operates the hydraulic unit on the outside of the operating shaft. |
