Assessment of alternative methods of preparing internal combustion engine cylinder bore surfaces for frictional improvement

作者：Kadirgama K^*; Ramasamy D; Abou El Hossein K; Hwa K C; Kadirgama G

来源：Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2017, 39(9): 3591-3605.

DOI：10.1007/s40430-017-0789-6

• Internal combustion engine
• Oscillating wear tester
• Aluminium matrix
• Lubrication

A smooth polished surface has a great potential to lead to low friction and wear in internal combustion engines (ICE). Alternative methods to create a smooth dimpled surface on a hypereutectic aluminium (aluminium die cast) ADC12 substrate for frictional improvements are evaluated in this study using an oscillating wear tester (OWT). It was found that the samples embossed with #480 grit sandpaper and sandblasted with #240 sieve sand samples had the more desired properties with a reduced coefficient of friction (mu) of 23% at low sliding speeds before hydrodynamic lubrication mode and 6.9% in the fully hydrodynamic lubrication region. Although samples cast with added graphite powder had much lower friction, it had insufficient oil retention volume and resistance against catastrophic wear.

• 出版日期2017-9