{"title":"通过实时现场生成的数据集评估异质车队的尾气排放情况","authors":"Abhinav Pandey , Govind Pandey , Rajeev Kumar Mishra","doi":"10.1016/j.apr.2024.102232","DOIUrl":null,"url":null,"abstract":"<div><p>Light-duty vehicular exhaust remains one of the key sources of ambient air pollution globally, despite concerted mitigation efforts by the countries worldwide. It is of top scientific interest to explore vehicular variables affecting such emission from passenger cars through real-time monitoring (N = 1561). The research investigated emission parameters such as CO, HC, CO<sub>2</sub>, O<sub>2</sub>, λ (Lambda) and Air-fuel ratio (AFR), alongside the vehicular variables, namely, age, mileage, emission norm and maintenance category. The model-oriented study found the car age (R<sub>range</sub>A = 0.81–0.98 for E<sub>COI</sub>; 0.72–0.96 for E<sub>HCI</sub>; 0.74–0.91 for λ<sub>FI</sub> and 0.75–0.93 for AFR<sub>FI</sub>, respectively) and mileage (R<sub>range</sub>M = 0.71–0.98 for E<sub>COI</sub>; 0.75–0.95 for E<sub>HCI</sub>; 0.69–0.93 for λ<sub>FI</sub> and 0.68–0.92 for AFR<sub>FI</sub>, respectively) to be the most significant aspects. Further, the study reported that the emissions improved with the progression of in-use norms (tighter the norm, lower the emission). Interestingly, the maintenance level of cars is found to be directly and inversely related to both CO and HC emissions in different testing modes. It further presents car model-wise emission equations for car age and mileage as which can be used to accurately predict the exhaust emission from cars. The research outlines the need to incorporate car mileage, maintenance level and applicable emission norm into the present environmental policy, particularly in the developing countries. An improved emission testing, real-time emission data and appropriate environment regulation are the three major steps towards urban air quality improvement policy.</p></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 10","pages":"Article 102232"},"PeriodicalIF":3.9000,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Evaluating exhaust emissions from heterogeneous car fleet through real-time field-generated dataset\",\"authors\":\"Abhinav Pandey , Govind Pandey , Rajeev Kumar Mishra\",\"doi\":\"10.1016/j.apr.2024.102232\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Light-duty vehicular exhaust remains one of the key sources of ambient air pollution globally, despite concerted mitigation efforts by the countries worldwide. It is of top scientific interest to explore vehicular variables affecting such emission from passenger cars through real-time monitoring (N = 1561). The research investigated emission parameters such as CO, HC, CO<sub>2</sub>, O<sub>2</sub>, λ (Lambda) and Air-fuel ratio (AFR), alongside the vehicular variables, namely, age, mileage, emission norm and maintenance category. The model-oriented study found the car age (R<sub>range</sub>A = 0.81–0.98 for E<sub>COI</sub>; 0.72–0.96 for E<sub>HCI</sub>; 0.74–0.91 for λ<sub>FI</sub> and 0.75–0.93 for AFR<sub>FI</sub>, respectively) and mileage (R<sub>range</sub>M = 0.71–0.98 for E<sub>COI</sub>; 0.75–0.95 for E<sub>HCI</sub>; 0.69–0.93 for λ<sub>FI</sub> and 0.68–0.92 for AFR<sub>FI</sub>, respectively) to be the most significant aspects. Further, the study reported that the emissions improved with the progression of in-use norms (tighter the norm, lower the emission). Interestingly, the maintenance level of cars is found to be directly and inversely related to both CO and HC emissions in different testing modes. It further presents car model-wise emission equations for car age and mileage as which can be used to accurately predict the exhaust emission from cars. The research outlines the need to incorporate car mileage, maintenance level and applicable emission norm into the present environmental policy, particularly in the developing countries. An improved emission testing, real-time emission data and appropriate environment regulation are the three major steps towards urban air quality improvement policy.</p></div>\",\"PeriodicalId\":8604,\"journal\":{\"name\":\"Atmospheric Pollution Research\",\"volume\":\"15 10\",\"pages\":\"Article 102232\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-06-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Atmospheric Pollution Research\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1309104224001971\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Atmospheric Pollution Research","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1309104224001971","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Evaluating exhaust emissions from heterogeneous car fleet through real-time field-generated dataset
Light-duty vehicular exhaust remains one of the key sources of ambient air pollution globally, despite concerted mitigation efforts by the countries worldwide. It is of top scientific interest to explore vehicular variables affecting such emission from passenger cars through real-time monitoring (N = 1561). The research investigated emission parameters such as CO, HC, CO2, O2, λ (Lambda) and Air-fuel ratio (AFR), alongside the vehicular variables, namely, age, mileage, emission norm and maintenance category. The model-oriented study found the car age (RrangeA = 0.81–0.98 for ECOI; 0.72–0.96 for EHCI; 0.74–0.91 for λFI and 0.75–0.93 for AFRFI, respectively) and mileage (RrangeM = 0.71–0.98 for ECOI; 0.75–0.95 for EHCI; 0.69–0.93 for λFI and 0.68–0.92 for AFRFI, respectively) to be the most significant aspects. Further, the study reported that the emissions improved with the progression of in-use norms (tighter the norm, lower the emission). Interestingly, the maintenance level of cars is found to be directly and inversely related to both CO and HC emissions in different testing modes. It further presents car model-wise emission equations for car age and mileage as which can be used to accurately predict the exhaust emission from cars. The research outlines the need to incorporate car mileage, maintenance level and applicable emission norm into the present environmental policy, particularly in the developing countries. An improved emission testing, real-time emission data and appropriate environment regulation are the three major steps towards urban air quality improvement policy.
期刊介绍:
Atmospheric Pollution Research (APR) is an international journal designed for the publication of articles on air pollution. Papers should present novel experimental results, theory and modeling of air pollution on local, regional, or global scales. Areas covered are research on inorganic, organic, and persistent organic air pollutants, air quality monitoring, air quality management, atmospheric dispersion and transport, air-surface (soil, water, and vegetation) exchange of pollutants, dry and wet deposition, indoor air quality, exposure assessment, health effects, satellite measurements, natural emissions, atmospheric chemistry, greenhouse gases, and effects on climate change.