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Uncertainties in Filter Mass Measurements Made to Determine Compliance with the 2007 Diesel PM Standard

机译：为确定是否符合2007柴油机PM标准而进行的过滤器质量测量的不确定性

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The 2007 Diesel paniculate matter (DPM) standard of 0.01 g/bhp-hr represents a 90% reduction of the previous standard and corresponds to roughly 100 micrograms (ug) gained on the filter sample used to determine compliance. The factors that influence the accuracy and precision by which this filter can be weighed are analyzed and quantified. The total uncertainty, representing best and typical cases, is between 1 and 5 μg. These uncertainties are used to compute the total uncertainty of the brake specific emission calculation. This uncertainty also depends on flowrate uncertainty, face velocity, and secondary dilution ratio. For a typical case, the total fractional uncertainty is in the range of ～5 - 70% at 10% of the standard and ～1 - 10% at 90% of the standard.

机译：0.01 g / bhp-hr的2007年柴油颗粒物（DPM）标准比以前的标准降低了90％，相当于在用于确定符合性的过滤器样品上获得了大约100微克（ug）。分析和量化影响称重该滤波器的精度和精度的因素。代表最佳和典型情况的总不确定度在1-5μg之间。这些不确定性用于计算制动器特定排放量计算的总不确定性。此不确定性还取决于流量不确定性，面速度和二次稀释率。在典型情况下，总分数不确定度在标准的10％时为〜5-70％，在标准的90％时为〜1-10％。

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来源
《Emissions measurement and testing, 2009》|2009年|p.295-304|共10页
会议地点 Detroit MI(US);Detroit MI(US)
作者
Jacob Swanson; David Kittelson; David Dikken;
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作者单位

University of Minnesota;

University of Minnesota;

Measurement Technology Laboratories;

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会议组织
原文格式 PDF
正文语种 eng
中图分类汽车工程;
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3. Correcting mass measurement of diesel particulate filters at non-ambient temperatures [J] . A M Williams C P Garner Proceedings of the Institution of Mechanical Engineers . 2009,第D1期

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4. Uncertainties in Filter Mass Measurements Made to Determine Compliance with the 2007 Diesel PM Standard [C] . Jacob Swanson, David Kittelson, David Dikken Society of Automotive Engineers World Congress . 2009

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Uncertainties in Filter Mass Measurements Made to Determine Compliance with the 2007 Diesel PM Standard

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