Research on the impact of new OBD diagnostic items on the emission of China 6 light-duty vehiclesLe Liu, Zhengjun Yang, Xionghui Zou, Yuwei Wang, Jian Ling and Haiguang ZhaoE3S Web Conf., 360 (2022) 01016DOI: https://doi.org/10.1051/e3sconf/202236001016