| 摘要 |
A free-piston combustion member comprising air compression and gas expansion chambers is combined with a rotary motor. The rotary motor shaft drives an air compressor, receives power from the gases expanding in an expansion chamber and provides residual torque and power for external use. Two combustion chambers located at each end of the free piston receive compressed air and fuel for combustion outside of the rotary motor assembly. The motion of the free piston between the two combustion chambers is independent of the motor rotary motion. The air admission inside the combustion chambers, the fuel injection and the combustion initiation process are all controlled and timed by the free piston movement back and forth. A heat exchanger is located between the combustion-chamber/free-piston assembly and the rotary motor. It also serves as storage tank for the compressed air before its admission in the combustion chambers in order to smooth out pressure surges in the compressed air entering the combustion chambers. The power output of the rotary motor is determined by the adjustment of the amounts of air and fuel admitted in the combustion chambers. Air and fuel admissions are controlled simultaneously in a programmed manner. The results are a slower, more efficient combustion process and the concomitant possible use of inexpensive fuels, and the emission of a lesser amount of pollutants in the exhaust gas.
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