| 摘要 |
A rotary engine, motor, compressor or pump having a stator housing (101) and a rotor (102). A variable volume working chamber is formed between the stator housing (101), rotor (102), thrust face (176) of moveable arm (116) and the thrust face of moveable arm (118). Cams and followers are provided so that the movable arms are kept in contact with the stator housing and centrifugal forces are not imposes upon the seals. The surface area of thrust face (176) varies with the varying profile of the stator housing inner surface (166) as the rotor (102) rotates to provide a desired torque characteristic. Typically, the surface area of the thrust face of moveable arm (118) is constant during at least part of the working cycle.
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