| 摘要 |
A reciprocating piston continuous variable displacement compressor (variable pressure expander) capable of easily rotating at a high speed. The variable displacement compressor comprises a cylindrical rotary valve serving as an intake (exhaust) valve in such a manner as to surround compression chambers (expansion chambers). The valve and an intake (exhaust) port comprise respective openings having widths variable in the valve rotating axis direction. The variable displacement compressor further comprises a variable valve mechanism for changing the opening/closing timings of the valve by moving the valve or a port component in the rotating axis direction. The variable displacement compressor is suitably used as a compressor for compressing a refrigerant, a supercharger of a displacement engine, and an exhaust regenerator. In particular, when the variable displacement compressor for use as a supercharger is combined with a mirror cycle engine or an engine with an exhaust regenerator, the size of the variable displacement compressor can be reduced and the fuel consumption can be improved as the supercharging pressure is increased. Therefore, the variable displacement compressor is particularly superior when used as an engine for a mobile body.
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