Two-cycle hot-gas engine

A two-cycle hot-gas engine comprising:

• an expansion piston (2;
• 104) in an expansion cylinder member (3;
• 102) and a compression piston (4;
• 103) in a compression cylinder member (5;
• 101), the expansion piston (2;
• 101) and the compression piston (4;
• 103) being disposed along a common axis (6);
• first gas chambers (GH1 and GK1, respectively) formed at a bottom end (15) of the compression piston (4) in the compression cylinder member (5) and at a bottom end (16) of the expansion piston (2) in the expansion cylinder member (3), respectively;
• the first gas chambers communicating with each other through a first heater (18), a first regenerator (19) and a first cooler (20);
• second gas chambers (GH2 and GK2, respectively) formed at a top end (21) of the compression piston (4) in the compression cylinder member (5) and at a top end (22) of the expansion piston (2) in the expansion cylinder member (3), respectively;
• and
• the second gas chambers communicating with each other through a second heater (24), a second regenerator (25), and a second cooler (26).