| 摘要 |
<p>PURPOSE:To save motive power consumption when the speed is reduced from high to low by regenerating fluid pressure to maintain a desired low R.P.M. after once decompressing the fluid pressure in a hydraulic non-step transmission gear unit to zero in order to allow free deceleration thereof. CONSTITUTION:Upon receiving a signal to reduce r.p.m. of a blower shaft 2, a control unit 12 commands a hydraulic pressure controller 11 to shut off the hydraulic pressure from a fluid pump 3 completely. Subsequently, a piston 10' is released through a return spring, and a motor shaft 1 and the blower shaft 2 are disconnected, which makes the blower r.p.m. liberally reduced gradually. When a desired low r.p.m. is detected at an r.p.m. counter 13, a signal to release the above command (hydraulic pressure shut off) is transmitted to the hydraulic pressure controller 11 from the control unit 12. Thus the load applied to the motor shaft 1 is diminished while the blower shaft 2 is in a low speed transition.</p> |
