7Martin G,Lixin P.Free piston engine:its application and optimization,SAE paper 2000-01-0996[R].Warrendale,USA:Society of Automotive Engineers,2000.
8Mikalsen R,Roskilly A P.A review of free-piston engine history and applications[J].Applied Thermal Engineering,2007,27(1415):23392352.
9Mikalsen R,Roskilly A P.Performance simulation of a spark ignited free-piston engine generator[J].Applied Thermal Engineering,2008,28(56):17261733.
10Wu W,Yuan S H.Hu J B,et al.Design approach for single piston hydraulic free piston diesel engines[J].Frontiers of Mechanical Engineering in China,2009,4(4):371377.