New cylinder liner surfaces for low oil consumption |
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| Authors: | Staffan Johansson, Per H. Nilsson, Robert Ohlsson, Cecilia Anderberg,Bengt-G ran Ros n |
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| Affiliation: | aVolvo Technology AB, Surface Engineering, Mechanics and Manufacturing, Sven Hutlins Gata 9A, Chamlers Teknikpark, SE-412 88 Göteborg, Sweden;bVolvo Powertrain AB, Department 24453, SE-405 08 Göteborg, Sweden;cHalmstad University, SET, Box 823, SE-301 18 Halmstad, Sweden |
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| Abstract: | Anticipated emission legislation and reduced fuel consumption are the main driving forces when developing new engines. Optimization of the active surfaces in the piston system is one possible way to meet the above demands. In this study the effects of surface topography and texture direction of the ring/liner contact on oil film thickness and friction were simulated and experimentally tested. “Low wear” results from the experimental wear tests with “glide honed” smooth liner surfaces supported the “low friction” simulation results. In addition a new wear volume sensitive surface roughness parameter, Rktot, based on the Abbot–Firestone bearing area curve was introduced. |
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| Keywords: | Piston ring systems Running-in wear Mixed lubrication |
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