Suitability of meso-level vehicle emission model in China(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2016年01期
- Page:
- 112-119
- Research Field:
- 汽车与机械工程
- Publishing date:
Info
- Title:
- Suitability of meso-level vehicle emission model in China
- Author(s):
- HAO Yan-zhao; WANG Hong-tu; SONG Guo-hua; QIU Zhao-wen
- 1. School of Automobile, Chang’an University, Xi’an 710064, Shaanxi, China; 2. Chang chun Institute of Urban Planning & Design, Changchun 130033, Jilin, China; 3. School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China
- Keywords:
- automobile engineering; road segment; emission factor; emission model; meso-level; suitability
- PACS:
- U491.92
- DOI:
- -
- Abstract:
- Vehicle emissions on various road segments were analyzed based on real road test. Then the parameters in two meso-level emission models of MOBILE and IVE were calibrated, and their suitability in China was analyzed by comparing actual with model-predicted emissions. The results show that driving condition is one important influencing factor for vehicle’s real time emissions, and due to complicated driving conditions on road segments that below minor arterial grade, vehicles are more likely to produce high emissions. Furthermore, the predicted results indicate that both of two models’ predicted values have good consistency with actual values on the overall trend, but they underestimate vehicle actual emissions under different degrees. The prediction errors of NOx and HC from MOBILE are high, and the relative errors in most of road segments are larger than 30%. The prediction accuracy of CO from MOBILE is slightly better, and the relative errors on more than half road segments are less than 30%. The prediction accuracy of CO from IVE is similar to that from MOBILE, but the prediction accuracy of NOx and HC are much higher than that from MOBILE, and the relative errors on most of road segments are less than 15%. Since the IVE introduces two parameters of the vehicle specific power (VSP) and engine stress (ES), instead of average speed to reflect the impacts of driving condition on vehicle emissions, it is more suitable for China to evaluate meso-level vehicle emissions toward road segments.
Last Update: 2016-02-01