FREE PISTON ENGINE GENERATOR: TECHNOLOGY REVIEW AND AN EXPERIMENTAL EVALUATION WITH HYDROGEN FUEL |
Y. WOO, Y. J. LEE |
KIER |
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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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