Two-stroke engines or other engines with working-piston-controlled cylinder-charge admission or exhaust (with combustion space in centre of star F02B57/10)

Full Title

Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons > Two-stroke engines or other engines with working-piston-controlled cylinder-charge admission or exhaust (with combustion space in centre of star F02B57/10)