Evaluating the feasibility of estimating particulate mass emissions of older-model diesel vehicle using smoke opacity measurements.

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2024-12-28 DOI:10.1038/s41598-024-83327-1

Hsi-Hsien Yang, Amit Kumar, Narayan Babu Dhital, Lin-Chi Wang, Cheng-Hsu Wu, Hesam Kamyab, Mohammad Yusuf

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Abstract

Real-world emissions of particulate matter (PM) and smoke opacity were studied for an older-model diesel pickup truck during four types of driving tests, namely fixed-point test, snap-acceleration test, road test, and hill road test (uphill/downhill). A portable emissions measurement system (PEMS) and an opacimeter were used to measure real-time concentrations of PM and smoke opacity, respectively, and simultaneously. Correlation analysis showed a significant positive association between PM and opacity, suggesting the feasibility of using an opacimeter to estimate PM mass emissions from diesel vehicles. Additionally, regression analyses were performed to evaluate the relationship between opacity and PM mass concentration. The results of this study indicate that PM emission concentrations from older-model diesel vehicles can be estimated with a reasonable accuracy by using a smoke opacimeter, which is a relatively simple and cost-effective method of emission testing, as an alternative to sophisticated PM measurement instruments.

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评价利用烟雾不透明度测量估算旧型柴油车微粒质量排放的可行性。

以某老款柴油皮卡为研究对象，在定点试验、急加速试验、道路试验和坡路试验（上坡/下坡）四种类型的驾驶试验中，对其颗粒物（PM）排放和烟浊度进行了研究。使用便携式排放测量系统（PEMS）和浊度计分别实时测量PM浓度和烟雾浊度。相关分析表明，PM与不透明度之间存在显著正相关关系，表明使用不透明度计估算柴油车PM质量排放的可行性。此外，还进行了回归分析，以评估不透明度与PM质量浓度之间的关系。本研究结果表明，使用烟雾不浊度计可以较好地估算老型号柴油车的PM排放浓度，这是一种相对简单和经济的排放测试方法，可以替代复杂的PM测量仪器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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