To develop high energy-density micro power generation systems, a novel two-stroke cycle micro free-piston swing engine (MFPSE), inspired by the concept of the micro internal combustion swing engine, is proposed to supply mechanical power for a micro power generation system. The working principle, gas exchange and ignition timing control cycles, and structure and operation advantages of the MFPSE are dis- cussed in detail. A prototype where the timing control and geometric parameters are designed with refer- ence to a traditional two-stroke cycle internal combustion engine is fabricated. The successful ignition ex- periment shows that this new concept engine is feasible and is worthy of further study.
The micro free-piston swing engine(MFPSE)is a new structure,free-piston internal combustion engine.The dynamic model integrated MFPSE with a power generator and thermodynamic models in compression,power and scavenge processes based on the open thermodynamic systems were presented.A simulation was executed at given geometric parameters and initial conditions.The results manifest that the working principle of MFPSE is feasible.
