Characteristics of real-world gaseous exhaust emissions from cars in heterogeneous traffic conditions
Characteristics of real-world gaseous exhaust emissions from cars in heterogeneous traffic conditions
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DOI：
10.1016/j.trd.2021.102855
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发表时间：
2021-06
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通讯作者：
S. Kuppili;V. D. Alshetty;M. Diya;S. Nagendra;Gitakrishnan Ramadurai;A. Ramesh;S. Gulia;A. Namdeo;K. Maji;M. Bell;P. Goodman;E. Hayes;J. Barnes;J. Longhurst;L. D. Vito
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作者：
S. Kuppili;V. D. Alshetty;M. Diya;S. Nagendra;Gitakrishnan Ramadurai;A. Ramesh;S. Gulia;A. Namdeo;K. Maji;M. Bell;P. Goodman;E. Hayes;J. Barnes;J. Longhurst;L. D. Vito
在这项研究中，研究人员探索了真实世界的驾驶条件，并使用车载排放测量技术为58辆乘用汽车开发了排放因子，同时在德里的五条不同路线上行驶。测得的CO，HC和NO的平均排放因子分别为3.99，0.34和0.54克/公里的柴油车，7.26，0.17和0.62的汽油车。道路、交通、车辆类型和驾驶特征都会影响排放量。然而，速度和加速度显着影响排放率随着速度和加速度的增加而增加。此外，排放量在40-60公里/小时和−0.5-0.5米/秒2时最小。估计全市的CO、HC和NO排放量分别为60.8、4.8和9.72吨/天。这些结果证明了监测真实世界的废气排放的重要性，因为用于新车符合性测试的测试循环测量值之间存在显著差异。
In this study, researchers have explored real-world driving conditions and developed emission factors for 58 passenger cars using on-board emission measurement technique while driving on five different routes in Delhi. The measured average emission factors of CO, HC, and NO were 3.99, 0.34, and 0.54 g/km for diesel vehicles, 7.26, 0.17, and 0.62 for petrol vehicles respectively. Road, traffic, vehicle type, and driving characteristics affect the quantity of emissions released. However, speed and acceleration significantly impact emission rates increasing with the increase in speed and acceleration. Also, emissions were minimal at 40–60 kmph and −0.5–0.5 m/s2. The estimated city-wide CO, HC, and NO emissions were 60.8, 4.8, and 9.72tonnes/day. These results demonstrate the importance of monitoring the real-world exhaust emissions given the substantial difference between test cycle measurements used for compliance testing of new vehicles.