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Effects of Lubrication System Parameters on Diesel Particulate Emission Characteristics
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Abstract
The effects of lubrication system parameters on particulate emission rate and composition were studied. Engine load, viscosity and piston-ring gap were varied. Particulate rate and composition were measured for multiple combinations of lubricant and ring-gap configurations at three different engine operating conditions. Particulate rates were higher with the lower viscosity oil and larger with the wider top-ring gap. At high load, the difference in particulate rate was due to changes in the non-soluble portion, while at medium and low loads, the change in particulate rate was due to differences in the lubricant-derived portion of the soluble organic fraction (SOF). Additionally, changes in the fuel-derived portion of the SOF were discovered and attributed to changes in fuel-absorption in the oil film.
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Laurence, R., Wong, V., and Brown, A., "Effects of Lubrication System Parameters on Diesel Particulate Emission Characteristics," SAE Technical Paper 960318, 1996, https://doi.org/10.4271/960318.Also In
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