During the present study, a double groove texture was designed on surface of piston ring to improve sealing performance between and cylinder liner. The experimental design method used fabricate test plan according width, depth, spacing. By using thermal–structural coupling analysis method, finite element standard textured carried out simulate deformation state liner system group during working ...

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 structu...

Free-piston engines are under investigation by a number of research groups worldwide, as an alternative to conventional technology in applications such as electric and hydraulic power generation. The piston dynamics of the freepiston engine differ significantly from those of conventional engines, and this may influence in-cylinder gas motion, combustion and emissions formation. Due to the compl...