| 摘要 |
PURPOSE:To facilitate the adjustment of each spring to set load, by providing a spring for predetermining the characteristic of spark advancement rising and another spring which is opposed to the former across a diaphragm and by enabling the control of the degree of spark advancement when a prescribed angle of spark advancement is effected. CONSTITUTION:When negative pressure is introduced into a negative pressure chamber 3, an operating rod 17 secured on a diaphragm 2 is moved against the first coiled spring 12 to advance the time of ignition. When the operating rod 17 is moved further, a retainer 25 slidably fitted on the rod comes into contact with an annular plate 19 to compress a second coiled spring 27 as well the first coild spring 12 to lower the degree of spark advancement by the cooperation between the springs 12, 27. Since the springs 12, 27 are opposed to each other across the diaphragm 2, the springs are simply mounted and the adjustment of each spring to set load is facilitated. |
