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首页> 外文期刊>Fuel >Role of selected dispersants in gasoline particulate emissions under lubricant formulations in the presence of commercial package and dispersant additives: Its effect on emissions, viscosity, and soot morphology
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Role of selected dispersants in gasoline particulate emissions under lubricant formulations in the presence of commercial package and dispersant additives: Its effect on emissions, viscosity, and soot morphology

机译：所选分散剂在商业包装和分散剂添加剂存在下润滑剂制剂下汽油颗粒排放的作用：其对排放，粘度和烟灰形态的影响

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摘要

The aim of this study was to investigate regulated and unregulated emissions including particulates generated from a gasoline direct injection engine with different oil formulations. Lubricating oil analysis was also performed with focusing on both viscosity and soot-in-oil morphology. According to the Euro-6 regulation, the standard for particle mass emissions of a gasoline engine is 0.005 g/km (6.0 x 10(11) N/km for particle number). Lubricant oil accounts for a considerable fraction of the particulate volatile fraction. In this study, intentional oil consumption together with different compositions of additives were investigated based on engine dynamometer tests. Regulated (PM, THC) and unregulated (VOCs) emissions were measured corresponding to the different level (baseline, Disp-1.5, Disp-3.0 and Wear-1.5) in lubricant additive formulations. Subsequently, the role of dispersant additives was observed and discussed in terms of additive interaction. Among the test cases, viscosity difference were distinctively observed both in fresh oil and soot (carbon black) containing oil. Higher dispersant level yielded an increase in viscosity of bulk oil, which is consistent with the previous study reported regarding diesel engines. Soot-in-oil morphology was also studied focused on the difference from diesel. The associated higher viscosity of the lubricating oil (Disp-3.0) is considered to yield more inhomogeneity of air-fuel mixtures, which finally results in more soot mass relative to Disp-1.5. engine cases.
机译：本研究的目的是调查规范和未经管制的排放，包括具有不同油制剂的汽油直喷发动机产生的颗粒。还通过重点介绍粘度和烟灰分析的润滑油分析。根据EURO-6调节，汽油发动机的粒子质量排放标准为0.005克/公里（粒子数为0.005克/ km）。润滑油占颗粒状挥发性级分的相当大部分。在本研究中，基于发动机测力计测试，研究了与不同的添加剂组成的有意的油消耗。对应于润滑剂添加剂制剂中的不同水平（基线，DISP-1.5，DISP-3.0和WEAD-1.5）测量调节（PM，THC）和未调节（VOCS）排放。随后，在添加剂相互作用方面观察并讨论了分散剂添加剂的作用。在测试病例中，在含有油的新鲜油和烟灰（炭黑）中，粘度差异明显观察。较高的分散剂水平产生散装油粘度的增加，这与关于柴油发动机的先前研究一致。还研究了烟灰体形态，重点是与柴油的差异。润滑油（DISP-3.0）的相关较高粘度被认为是产生的空气燃料混合物的更加偏置性，最终导致烟尘的烟尘相对于DISP-1.5。发动机箱。

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  • 来源
    《Fuel》 |2020年第1期|118444.1-118444.10|共10页
  • 作者

    Kang Yoonkyung;

  • 作者单位

    Korea Univ Sch Mech Engn Seoul 02841 South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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