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Investigation on the application of YAG laser texturing technology to the cylinder wall of auto engine

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Purpose ‐ The purpose of this study was to develop a new approach using a pulse YAG laser with rational power density and pulse width to texture desired discrete distribution morphology on the cylinder wall. Design/methodology/approach ‐ Variational rules of the effects of these three parameters were found by calculating the oil film on the cylinder/piston ring system. The experiment results were compared between laser texturing cylinders and conventional honing cylinders. Findings ‐ It was found that the coefficient of friction and wear rate of laser texturing cylinders were reduced by 50 and 85.7 per cent, respectively, and the piston ring wear rate was decreased by 50 per cent under full lubrication condition. Under starved lubrication condition, the cylinder liner wear was reduced by 34.3 per cent. Originality/value ‐ The effectiveness of which was determined by three control parameters: depth-to-diameter ratio, area density and distribution angle of the dimples.
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Keywords: Area density; Depth-to-diameter ratio; Distribution angle; Friction and wear characteristics; Laser texturing

Document Type: Research Article

Publication date: April 8, 2014

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