Free-piston diesel engines are characterized by freely moving pistons without any crankshaft or camshaft connected to the pistons. This allows a compact and efficient engine design, but requires automatic control of the piston motion. This paper present a dynamic mathematical model of a free-piston diesel engine, and a control oriented dynamic analysis leading to a piston motion control structure. Experimental results using a full scale test cylinder are included and show feasibility of the suggested control approach.
Dynamics and Control of a Free-Piston Diesel Engine
Contributed by the Dynamic Systems, Measurement, and Control Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the ASME Dynamic Systems and Control Division, June 14, 2001; final revision, February 20, 2003. Associate Editor: A. Alleyne.
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Johansen, T. A., Egeland, O., Johannessen , E. A., and Kvamsdal, R. (September 18, 2003). "Dynamics and Control of a Free-Piston Diesel Engine ." ASME. J. Dyn. Sys., Meas., Control. September 2003; 125(3): 468–474. https://doi.org/10.1115/1.1589035
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