| 摘要 |
An axial piston rotary power device has a housing enclosing a cylindrical chamber. An axially undulating guide cam is medially fixed to the inner annular wall of the chamber. A central cylindrical stator protrudes axially through the chamber from one end of the housing. The stator has lateral intake and discharge ports communicating with axial channels for conveying working fluid to and from the chamber. A rotary cylindrical block has a plurality of closed-ended cylindrical bores parallel to and spaced apart at equal angular intervals around a central bore. The block rotatably encloses the central cylindrical stator. Each closed-ended cylindrical bore has, at each end, a radially inward opening through the central bore and axially aligned with lateral ports in the central stator. A plurality of double-acting pistons are slidably received in the bores. Each piston has a medial stub shaft protruding through a slot parallel to the axis. The stub shafts have respective cam followers that engage the surrounding undulating cylindrical guide cam. The action of the cam followers on the guide cam imparts rotation to the cylindrical block when the pistons reciprocate within their respective bores. Each of the end openings alternately registers with respectively aligned intake and discharge ports as the cylinder block rotates. Various embodiments of the rotary power device, which differ in the structure of the central stator, can serve as a four-stroke internal combustion engine, a compressor, a pump, a fluid-driven motor or an expander device.
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