Modeling and Control of a Free Liquid-Piston Engine Compressor
نویسندگان
چکیده
This paper presents the modeling and control of a prototype compact free liquid-piston engine compressor. The dynamic model includes 1) the injection dynamics of the air/fuel mixture, 2) the dynamics of heat release during combustion, 3) the inertial dynamics of the magnetically latched combustion valve, 4) the mass flow dynamics of the combustion and exhaust valves, 5) the inertial dynamics of the free piston, and 6) the compression and pumping dynamics. The model is then utilized to design an iterative control scheme to control the amount of fuel injected for each cycle, the timing of the spark, and the timing and duration of the exhaust valve. Simulation results show a good correlation with experimentally obtained data, and simulated closed-loop control of the engine is demonstrated.
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