Effect of Urban Road Slope and Speed on Motor Vehicle Emission
Journal Title: 河南科技大学学报（自然科学版） - Year 2019, Vol 40, Issue 2
Abstract
To study the impact of urban road gradient change on motor vehicle emissions, based on vehicle emission test platform, the actual road emission data was obtained. Through the vehicle specific power ( VSP) backstepping, the data was improved. The emission characteristics of three pollutants ( CO, HC, NOx) in the different speed range of the light vehicle in four slope sections were analysed. Analysis results show that when the vehicle speed is in the speed range of 20 ～ 50 km/h, the mass emission rate of the three pollutants approximately increases by 22. 8%, 23. 6% and 24. 4%, respectively for increasing each slope interval. On the road with a certain slope, when the vehicle speed is in the speed range of 20 ～ 40 km/h, the three pollutants are in high-emission state. The mass emission rate is approximately increased by 64. 3%, 80. 0% and 95.0%, respectively compared with low-emission state.
Authors and Affiliations
Chunyan ZHENG, Hai ZHANG, Dong GUO, Juan WANG, Jinbao ZHAO
Keywords
Related Articles
- EP ID EP422473
- DOI 10.15926/j.cnki.issn1672-6871.2019.02.007
- Views 110
- Downloads 0
Experiment on Compressive Properties of Ice with Cotton Fiber
The universal material testing machine was used to measure uniaxial compressive strength of ice with fiber mass fraction 0%,3%,6%,9%,12% respectively over a strain rate range from 10-3/ s to 10-1/ s. The stress strain cu...
Effect of Preparation Process on Friction and Wear Properties of C/C-SiC Composites
Carbon/carbon porous body of low density reinforced with carbon fiber needled felt were prepared by chemical vapor infiltration (CVI) .Then C/C-SiC composites were prepared by reactive melt infiltration (RMI) and precurs...
Microstructure and Properties of Electrodeposited Coatings on Titanium Surface
WC coating and CoCr/WC coating were prepared on the surface of TA2 basis material by electro spark deposition. The morphology, surface roughness, thickness, phase composition, microhardness and relative wear resistance o...
Congestion Propagation Vulnerability of Large Bridges and Tunnels in Urban Roadway Network
Road network vulnerability were complex and changeable, so far there was no uniform evaluation index. Based on the theory of congestion propagation and the idea of dynamic traffic assignment, the degree of traffic damage...
Reduction Roasting Test of Garnierite Laterite Ore by Methane
A low-grade garnierite laterite ore composed of 0. 82% Ni and 9. 67% Fe was studied through roasting-magnetic process under the condition of methane atmosphere. The methane was proved to be decomposed to carbon and hydro...