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首页> 外文期刊>Transportation Research >Exhaust determination and air-to-fuel ratio performance of end-of-life vehicles in a developing African country: A case study of Nigeria
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Exhaust determination and air-to-fuel ratio performance of end-of-life vehicles in a developing African country: A case study of Nigeria

机译：发展中非国家的寿命终身车辆的废气确定和空气 - 燃料比率：以尼日利亚为例

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摘要

The purpose of this study is to assess the exhaust emission levels of end-of-life automobiles in Ogun State, Nigeria and estimate the probability of compliance to European and national exhaust policy standards. Trend analysis, analysis of variance and binary logistic regression were used to compare emission levels and to estimate the probability of compliance to emission standards. The results showed that emission levels for carbon monoxide and oxygen increased by 2% and hydrocarbon levels doubled with the age of the vehicle. Older vehicles also show a lean mixture in the air to fuel ratio calculation. Vehicles falling within a heavier weight class emit more CO2. Probability models showed that compliance to European and national standards decrease as much as 30% with age and use of the vehicles. Older commercial vehicles falling into a heavy weight class has the lowest probability of compliance with any of the emissions policies assessed. The empirical evidence of the study supports the prior evidence that age, weight and use is directly related to emissions. With the volume of end-of-life vehicles in Nigeria, more enforcement is needed to monitor maintenance and increase vehicle compliance to emission policies.
机译：本研究的目的是评估尼日利亚，尼日利亚的寿命终端汽车的废气排放水平，并估计遵守欧洲和国家排气政策标准的可能性。趋势分析，方差分析和二元逻辑回归用于比较排放水平，并估计遵守排放标准的可能性。结果表明，随着载体的年龄，一氧化碳和氧的发射水平增加了2％，烃水平加倍。较旧的车辆还在空气中显示出稀释混合物以燃料比计算。落在较重的重量级内的车辆发出更多二氧化碳。概率模型表明，随着年龄和使用车辆，符合欧洲和国家标准的符合程度低至30％。落入重磅级的较大的商用车辆具有符合任何排放政策的符合性最低的概率。该研究的经验证据支持年龄，体重和使用的现有证据与排放直接相关。随着尼日利亚的寿命终端数量，需要更多的执法来监测维护并增加对排放政策的依从性。

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