Journal of Emerging Trends in Engineering and Applied Sciences: Research Areas

Article Title: Friction Characteristics Analysis of Confined Piston Linear Generator (CPLG)
by Binbin Yang,Yue Liang, Deliang Ji, Yan Zhang, Tiezhu Zhang, Bo Zhao, Tiezhu and Tiezhu Zhang

Abstract:
A new energy conversion device, Confined Piston Linear Generator (CPLG) was proposed in this paper. The CPLG consists of a V-type two-cylinder gasoline engine, two Permanent Magnet Synchronous Linear Generators (PMSLGs), and two linear bearings (LBs). A friction model of the CPLG was built by the coupling of ADAMS and Simulink to study the friction characteristics. The results showed that, as the speed is increased from 2000 rpm to 6000 rpm, the peak friction force of the piston is increased from 208.43 N to 386.38 N, and the average friction power of the CPLG is increased from 236.78 W to 1340.14 W. As the generator load resistance is increased from 30 ? to 60 ?, the peak friction force of the piston is decreased from 465.79 N to 345.89 N, and the peak friction power of the CPLG is reduced from 5944.78 W to 4432.72 W. When the service life of expectancy the LB is extended, the friction power of the LB should be decreased. Compared with the prototype Internal Combustion Engine (ICE), the CPLG has the similar variation of cylinder pressure with piston displacement, but its peak cylinder pressure and acceleration are slightly higher. In addition, the peak friction force and friction power of the piston rings and the piston skirt are achieved during the power stroke, and the peak friction power appears later than the peak friction force. For a given speed, the friction power of the LB shows sinusoidal fluctuation.

Keywords: Confined Piston Linear Generator (CPLG), Friction characteristic, Piston ring, Piston skirt, Linear bearing

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