Fluid-working machine with multi-lobe ring cam

摘要

1 Abstract (Figure 3) 3 Fluid-working machine with multi-lobe ring cam 5 A fluid-working machine for a renewable energy generation device, the fluid-working 6 machine comprising a ring cam and a plurality of working chambers, the ring cam 7 having an annular working surface extending around an axis of rotation of the ring 8 cam, the annular working surface defining a plurality of waves, each working 9 chamber having a piston, each piston in operative engagement with the ring cam 10 working surface, the ring cam and working chambers being mounted to rotate relative I I to each other, cycles of working chamber volume being thereby coupled to rotation of I2 the ring cam relative to the working chambers, characterised in that the individual 13 waves of the ring cam working surface have an asymmetric profile.