南昌市公交车行驶工况研究

Research of Bus Driving Cycle in Nanchang

随着我国对节能汽车研究的不断深入,符合实际道路的行驶工况循环研究也越来越多。在对节能汽车的设计过程中,一个合理的行驶工况循环图对于完成整车动力匹配及制定控制策略有着至关重要的作用。以参与的863项目为基础,以南昌市示范运行的混合动力城市公交车为研究对象,在进行道路试验的基础上,基于实际的车速、加速度等准则数,利用多元统计理论建立了能够反映南昌市公交车实际运行特征的行驶工况,并做了这个行驶工况和国内外典型城市工况的对比,结果表明,南昌市有它自己的道路行驶特征:市区平均速度低,怠速时间长,加减速频繁,平均加减速度小。

As the study of China＇ s energy-saving car deepening, there are more and more study of actual road driving conditions cycle. In the design process of fuel-efficient cars, a reasonable driving conditions cycle map has a crucial role for the complete matching of vehicle power and the establishment of control strategy. The hybrid city buses running in Nanchang as target for the study were made, which used the research of Nanchang ＂863＂ new energy vehicle fit technology as the background participated in, with the basis of road test, based on the ac- tual speed, as acceleration as the criteria value. Using the multivariate statistical theory, established Nanchang City bus driving conditions re- flecting the actual operating characteristics. Then the comparison of domestic and international typical urban driving conditions was made. The results show that the Nanchang has its own road characteristics： low urban average speed, long idle time, frequent acceleration and decelera- tion, the low average acceleration and deceleration.