Rotary piston engine using repeated eccentric contact design on chamber=cycled bases

摘要

The sealing surface (32) of the slide (30) rides in a piston (14) recess lying axi-parallel to that (31) of the piston chamber (12) so as to co-operate with an opposing recess surface (33) conforming to the curve of the surface (32). The opposing sealing surface (33) is slidably mounted and the slide (30) is forced against this opposing surface (33) either by spring (48) or pneumatic or hydraulic plunger (50), the slide (30) additionally bored out to pass lubricant to the two sealing surfaces. The rotary piston (14) itself is bored out from opposed surface (33) to the crank surface (18) and/or the sides of the chamber to pass lubricant to the crank. The inside peripheral surface of the chamber (12) and/or the side surfaces (24,26) of the chamber are polished where they contact the piston casing and/or wearproof coated using a plasma-CVD process with modified superhard carbon. The surface (32) should be concave to a radius equal to that of the opposing surface (33).