| 摘要 |
The most unique parts are a drum(11) having a taper-shaped projection part(15) and another drum(12) having a taper-shaped depression part(16) in the first driving part(8a) (the same drums in the second driving part (8b)). The intake process comprises : the drums(11)(12) turning and the projection part(15) and the depression part(16) getting contacted with balls(17)(18)(19)(20), (21)(22)(23)(24) in turn; then a pressure plate(28) among a pair of four pressure plates (25)(26)(27)(28), (29)(30)(31)(32) moving outside, while a pressure plate(32) moving inside, making the valve of a related cylinder(33) operated by the pressure difference; When the engine speed being low, a ECU(1) in the control part(7) connecting port 'a' with port 'b' in a direction selecting valve(5); then the oil pressure of the accumulator(4); and the contact time of the balls(17)(18)(19)(20), (21)(22)(23)(24) and the projection part(15) and the depression part(16) geting longer, the operating timing of the valve getting slower.
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