Yamaguchi, E.S., Untermann, M., Roby, S.H., Ryson, P.R. Effect of exhaust gas recirculation (EGR) contamination of diesel engine oil on wear, Wear, Vol. The influence of soot and dispersant on ZDDP Film thickness and friction: Lubrication Science, Vol. Analysis of soot accumulation inside diesel engines, SAE Review, Vol. Daido, S., Kodama, Y., Inohara, T., Ohyama, N. Furthermore, high level of proper particle size (20 nm – 100 nm) contaminated in oil will increase probability of rubbing process. By the way, the too large particle size compared to oil film thickness will escape out and too small particle size will not effect on wear. In conclusion, the appropriate particle size (20 nm - 80 nm of primary particles and 80 nm - 300 nm of agglomerated particles), which is near to oil film thickness between metal surface contacts, is the dominant cause of making wear. Based on tribology test, soot contamination in oil made more wear on tested steel ball and reduced friction during test comparing to the test with fresh oil. Wear roughness in micro-scale was also investigated by high resolution optical microscope and 3D rendering optical technique. The behavior was studied by means of a Four-Ball tribology test with friction and wear measured. ![]() Micro-nanostructure of particles were studied by electron microscope. Soot particle contamination was simulated using carbon black. The "raw" scattered light data is then passed to the calculation algorithm where it will be transformed into a particle size distribution.įor more information about acquiring an instrument, click here.The characteristics of soot affecting on the abilities of lubricating oil and leading to result in metal wear was studied.
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