tribological characteristics of piston ring in a free-piston engine … · 2017. 1. 16. ·...

Energy Procedia 61 ( 2014 ) 979 – 983

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1876-6102 © 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).Peer-review under responsibility of the Organizing Committee of ICAE2014doi: 10.1016/j.egypro.2014.11.1008

© 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).Peer-review under responsibility of the Organizing Committee of ICAE2014

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980 Chenheng Yuan et al. / Energy Procedia 61 ( 2014 ) 979 – 983

Chenheng Yuan et al. / Energy Procedia 61 ( 2014 ) 979 – 983 981

982 Chenheng Yuan et al. / Energy Procedia 61 ( 2014 ) 979 – 983

Chenheng Yuan et al. / Energy Procedia 61 ( 2014 ) 979 – 983 983