Characterization of diesel emission from in-use vehicles and an engine in Beijing, China

FUEL 209

Jie Zhang, zj@pm25.org1, Kebin He, hekb@tsinghua.edu.cn1, James Lents, james.lents@ucr.edu2, and Qidong Wang1. (1) Department of Environmental Science and Engineering, Tsinghua University, Beijing,100084, China, (2) International Sustainable Systems Research Center, Riverside, CA 92521
Real-world emission from 29 diesel vehicles in Beijing was measured by on-board test system. Emission rates of PM2.5, NOx, HC and CO were derived from SEMTECH-D and DMM (Dekati Mass Monitor). And pollutants emission of a Euro 2-standard engine with different diesels was also determined by dynamometer test. In this research, emission factor of NOx and CO have better correlation with driving velocity compared with acceleration. While distance-based emission factors meet with the trends of velocity, acceleration better than the fuel-based emission factors do. PM2.5 and NOx emission factors of vehicles and engine were sorted by power, illustrating that in-use vehicles emit more. Obtained emission factors from the diesel vehicles do not indicate strong correlation with the vehicle type, model year and VKT (vehicle kilometer traveled) of the diesel vehicles, and these emission factors are higher than the other researches.
 

Ultraclean Transportation Fuels
1:30 PM-5:30 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 239, Oral

Division of Fuel Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008