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International Journal of Automotive Technology > Volume 15(2); 2014 > Article
International Journal of Automotive Technology 2014;15(2): 229-235.
doi: https://doi.org/10.1007/s12239-014-0024-8
FREE PISTON ENGINE GENERATOR: TECHNOLOGY REVIEW AND AN EXPERIMENTAL EVALUATION WITH HYDROGEN FUEL
Y. WOO, Y. J. LEE
KIER
ABSTRACT
Free piston engine generators which utilize a free piston engine and a linear generator are under investigation by a number of research groups around the world. Free piston engines give power output in a more efficient way when compared to conventional crankshaft engines, because the former do not have a crank mechanism which brings about additional mechanical loss. However, for the reliable and stable operation of the free piston engine generators, it is required to have a viable control system to address the uncertainty of piston motion. In this paper, most of the successful free piston engine generator developments were reviewed and a recent experimental result on a prototype free piston system was also presented with regard to engine performance with different mixture preparation strategies.
Key Words: Free piston engine, Generator, Hydrogen, Two-stroke engine, Scavenging efficiency, Port-valve overlap
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