System for varying the cylinder volume in fluid machines

摘要

The invention concerns a system for varying the cylinder volume in alternating fluid machines which comprise a piston 12 operating in a cylinder with a main chamber 11, having intake and exhaust valves for a fluid. In the piston 12 is provided an auxiliary chamber 16 which accommodates a secondary piston 17 that is controlled and able to move independently of the main piston to describe an additional cubic displacement Y added to the cubic displacement X of the main piston 12. IMAGE