RECIPROCATING ROTARY PISTON SYSTEM AND PRESSURE PUMP AND INTERNAL COMBUSTION ENGINE USING THE SAME

摘要

A reciprocating rotary piston system includes a cylinder (3) having an annular and hollow interior; a plurality of pistons (1A to 1D) of Which first and second parties are formed to be disposed alternately on the same inner circumference of the cylinder, the first and second parties of the pistons reciprocating along a given arc at the same speed and in the opposite direction with respect to each other: a plurality of intake valves (4A to 4D) mounted at each point of the cylinder where the two adjacent pistons meet for controlling flow of a fluid introduced thereinto from the outside; and a plurality of exhaust salves (5A to 5D) mounted at each point of the cylinder where the two adjacent pistons meet for controlling flow of a fluid forced out from the inside. The piston system is used for a hydraulic/pneumatic pump, a vacuum pump and an internal combustion engine.