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首页> 美国卫生研究院文献>Springer Open Choice >Analysis of the repeatability of the exhaust pollutants emission research results for cold and hot starts under controlled driving cycle conditions
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Analysis of the repeatability of the exhaust pollutants emission research results for cold and hot starts under controlled driving cycle conditions

机译：可控行驶条件下冷热启动时废气污染物排放研究结果的可重复性分析

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摘要

Measurement of car engines exhaust pollutants emissions is very important because of their harmful effects on the environment. This article presents the assessment of repeatability of the passenger car engine exhaust pollutants emission research results obtained in the conditions of a chassis dynamometer. The research was conducted in a climate chamber, enabling the temperature conditions to be determined from − 20 to + 30 °C. The emission of CO, CH4, CO2, NOX, THC, and NMHC was subjected to the analysis. The aim of the research is to draw attention to the accuracy of the pollutant emission research results in driving cycles, and the comparison of pollutant emission results and their repeatability obtained in successive NEDC cycles under cold and hot start conditions. The results of the analysis show that, in the case of a small number of measurements, the results repeatability analysis is necessary for a proper interpretation of the pollutant emission results on the basis of the mean value. According to the authors’ judgment, it is beneficial to determine the coefficient of variation for a more complete assessment of exhaust emission result repeatability obtained from a small number of measurements. This parameter is rarely presented by the authors of papers on exhaust components emission research.
机译：汽车发动机废气污染物排放的测量非常重要，因为它们对环境有害。本文介绍了在底盘测功机条件下获得的乘用车发动机排气污染物排放的可重复性评估研究结果。这项研究是在气候室内进行的，可将温度条件确定为−20至+30°C。对CO，CH4，CO2，NOX，THC和NMHC的排放进行了分析。该研究的目的是引起人们对驾驶循环中污染物排放研究结果准确性的关注，以及在冷，热启动条件下连续NEDC循环中污染物排放结果及其可重复性的比较。分析结果表明，在少量测量的情况下，必须对结果进行重复性分析，以便根据平均值正确解释污染物排放结果。根据作者的判断，确定变化系数对从少量测量获得的废气排放结果可重复性的更完整评估是有益的。关于排气成分排放研究的论文的作者很少提出该参数。

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