| 摘要 |
PURPOSE:To realize excellent accommodation to the load of a pressurized liquid production device utilizing a liquid pressure type free piston internal combustion engine, by providing a compressive working liquid control means which supplies compressive working liquid to a machine liquid conversion means only when the pressure of the working liquid for generating power is lowered below a predetermined value. CONSTITUTION:Working liquid for generating power flows out from a liquid pressure cylinder 3 through a check valve during expansion strokes of an internal combustion engine, and the pressure in a high-pressure accumulator 8 rises. When the pressure of the working liquid for generating power in the high- pressure accumulator 8 reaches a predetermined value, a cut-off valve 12 is closed to intercept a flow of a working liquid for compression and a free piston is stopped at a bottom dead center. When the pressure of the working liquid for generating power falls below the predetermined value, the cut-off value 12 is opened and a reciprocating motion of the free piston 2 is restarted, therefore, excellent accommodation is realized to the load of the pressurized liquid production device utilizing a liquid pressure type free piston internal combustion engine. |
