Abstract The running-in of cylinder liner-piston rings (CLPRs) is the most important process that must be performed before a marine diesel engine can operated. quality directly affects reliability CLPR. surface texture CLPR has been proven to significantly affect its lubrication performance. In this study, tribological behavior during investigated. Three types textures are generated on via lase...

We used a capacitive technique to determine the radial clearance between the piston and cylinder of a gas piston gauge. This method determines the effective area of a piston gauge pressure standard, independent of calibration against another piston gauge or manometer, as long as the diameter of the piston is dimensionally measured. It also allows an independent determination of piston gauge dis...

A liquid piston concept is proposed to improve the efficiency of gas compression and expansion. Because a liquid can conform to an irregular chamber volume, the surface area to volume ratio in the gas chamber can be maximized using a liquid piston. This creates near-isothermal operation, which minimizes energy lost to heat generation. A liquid piston eliminates gas leakage and replaces sliding ...

A piston-rings-cylinder (PRC) assembly determines the blowby, engine oil consumption, and friction wear processes accompanying system's operation. Thus, it is crucial for whole IC efficiency lifetime. lot of research effort put into increasing performance this complex highly dynamic system. Advanced, comprehensive models play an important role in understanding improving PRC In presented work, e...

We consider a heavy piston in an infinite cylinder surrounded by ideal gases on both sides. The piston moves under elastic collisions with gas atoms. We assume here that the gases always exert equal pressures on the piston, hence the piston remains at the so called mechanical equilibrium. However, the temperatures and densities of the gases may differ across the piston. In that case some earlie...