| 摘要 |
PURPOSE:To regulate a compression ratio thus to always maintain high efficiency irrespective of a fluctuation in the load of an engine or a change in the number of revolutions, by varying the upper dead point of a piston through vertical movement of a crank shaft in the direction of a cylinder. CONSTITUTION:When oil is pressed in a hydraulic cylinder 23 through a rubber hose 29, an operating rod 26 also moves upward resulting from the upward movement of a piston 25, and thereby an arm 19 turns clockwise. Reversely, if the oil is discharged through the rubber hose 29, the piston 25 and the operating rod 26 move downward through the tension of a spring 28, thereby the arm 19 turns counterclockwise. Following the rotation of the arm 19, an operating shaft 12 and operating rings 15 turn clockwise or counterclockwise, and resulting from the rotation of the operating shaft 12, an operating shaft 15 having a diameter larger than that of the former operating shaft moves vertically a supporting part 16 thereof, thereby a retainer 8 moves vertically centering around a shaft 11 acting as a fulcrum. This causes also the vertical movement of a crank shaft 7 held by the retainer 8, also resulting in the vertical movement of a piston 3. |
