APPLICATION OF ATKINSON / MILLER CYCLE ON A ROTARY INTERNAL COMBUSTION ENGINE

Alexandre Zuquete Guarato¹; Epifanio M. Ticona¹; Sergio Leal Braga¹

¹ PUC-Rio

doi:10.20906/CPS/COB-2015-0865

Resumo

Atkinson cycle is already recognized for having a better thermal efficiency then Otto cycle. That cycle is used so far mostly on reciprocating internal combustion engines (ICE) by changing the configuration of crank mechanisms. Miller cycle simulates Atkinson cycle by late closing of intake valves on ICE with classical (symmetrical) crank mechanisms. On the other hand, rotary engines presents several advantages over conventional reciprocating ICE while having, in general, no valves or crankshafts. In this paper, the use of Atkinson / Miller cycle on a valveless rotary engine is proposed. The results highlight the rise on thermal efficiency while keeping inherent advantages of rotary engines.

Palavras-chave: Atkinson / Miller cycle; rotary engine; thermal efficiency