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首页> 外文会议>Proceedings of the 2009 spring technical conference of the ASME Internal Combustion Engine Division >CONTROLLING LUBRICANT ACIDITY WITH AN OIL CONDITIONING FILTER
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CONTROLLING LUBRICANT ACIDITY WITH AN OIL CONDITIONING FILTER

机译：用机油滤清器控制润滑油酸度

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In modern diesel engines, acidity generally determines the lubricant drain interval. To control acidity, lubricant suppliers incorporate detergent additives to neutralize acids that accumulate in the oil via exhaust blow-by and base-stock oxidation. However, formulations that meet the most recent diesel lubricant classification specifications typically contain lower levels of detergent since this additive contributes to ash that fouls emissions aftertreatment systems. This study explores a novel approach to lubricant acid control as a potential means to reduce additive requirements or increase oil drain interval. The authors investigate the performance of an innovative oil filter that releases no additives into the lubricant, yet enhances the acid control function typically performed by detergent and dispersant additives. The filter chemically conditions the crankcase oil during engine operation by sequestering acidic compounds derived from engine combustion and lubricant degradation.rnLong duration heavy-duty diesel engine tests show that the filter reduces both the rate of Total Base Number (TBN) decline and the rate of Total Acid Number (TAN) increase by a factor of two. Analysis by Fourier transform infra-red (FTIR) spectroscopy also indicates that lubricant oxidation may be lowered. In addition, these results suggest a reduction in engine wear. These results imply that lower lubricant additive levels in combination with this novel oil filter may be used to reduce ash accumulation in diesel aftertreatment systems, while maintaining adequate engine protection. The results also indicate that the engine operator may use this oil filter with a state-of-the art lubricant to lengthen oil change intervals.
机译：在现代柴油发动机中，酸度通常决定润滑剂的排放间隔。为了控制酸度，润滑剂供应商加入了清洁剂添加剂，以中和通过排气漏气和基础油的氧化而积聚在机油中的酸。但是，符合最新柴油润滑剂分类规范的配方通常包含较低含量的清洁剂，因为该添加剂会导致灰烬，污染后处理系统。这项研究探索了一种控制润滑剂酸的新方法，作为减少添加剂需求或增加排油间隔的潜在手段。作者研究了一种创新的机油滤清器的性能，该滤清器不向润滑油中释放任何添加剂，但增强了通常由洗涤剂和分散剂添加剂执行的酸控制功能。滤清器通过螯合源自发动机燃烧和润滑剂降解的酸性化合物来化学调节发动机运转期间的曲轴箱油。长时间的重型柴油发动机测试表明，滤清器既降低了总碱值（TBN）的降低速度，又降低了总碱值的降低速度。总酸值（TAN）增加两倍。傅立叶变换红外（FTIR）光谱分析也表明，润滑剂的氧化作用可能会降低。另外，这些结果表明减少了发动机磨损。这些结果表明，与这种新型机油滤清器结合使用的润滑油添加剂含量较低，可用于减少柴油后处理系统中的灰分积聚，同时保持足够的发动机保护。结果还表明，发动机操作员可以将这种机油滤清器与最新的润滑剂配合使用，以延长换油周期。

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