【摘要】 采用GPS及多普勒速度仪对中国8个不同规模城市的机动车行驶工况进行测试。基于大量测试结果,采用特征参数法合成测试城市机动车行驶工况,并分析了中国城市机动车行驶工况特征。结果表明,中国不同规模的城市表现出不同的机动车行驶特征。与欧美标准工况相比,在行驶模式分布、平均车速以及加/减速等方面均存在很大差异。更多还原

【Abstract】 Urban motor vehicle driving patterns during 3 periods (early morning, noon and early evening) Monday through Friday in spring, summer and fall were recently monitored for 8 Chinese cities (two cities each of 4 size scales) and Beijin city bus and trucks using a GPS instrument and Doppler Speed Sensor. The Matlab software was employed for calculation of 11 driving cycle parameters based on the survey and test data and for simulating the driving cycles for the 10 cases. The characteristics of driving patterns in Chinese cities were analyzed and compared with typical European and US cities. The driving cycles of the 10 cases were affected by the city size, road type and condition, traffic density and control method; they were different from the representative cities of Europe (ECE15+EUDC) and the US (FTP-75) in driving mode distribution, average speed, and acceleration rate.更多还原