VOCs Emissions from Vehicle Evaporative Processes Huan Liu
- Slides: 7
VOCs Emissions from Vehicle Evaporative Processes Huan Liu Dr. , Associate Professor Tsinghua University liu_env@tsinghua. edu. cn Take-home Messages: （1）Emission factor measurements： diurnal, hot soak, permeation, refueling regular gasoline, E 10 Tier 2, Euro 3/4 （2）Emission inventory: 882 Gg （3）Policy suggestion: China moves from current Euro standards to US Tier 2 48 hr test.
Method: emission measurements US Tier 2 vehicles Euro/China Type IV test US 48 -hour test+ 24 -hour permeation SHED tests RVP of test fuel Purge rate during driving cycles Weight of canisters Emission factors Euro/China IV vehicles US Refueling Test US 72 -hour diurnal test Species analysis Sample gas in the SHED and analysis using GC-MS/FID method Characteristic, emission process, species profile……
Results (1): Emission Factors Real-world emission factors Influence factors Driving cycles Temperature
Results (2): VOCs Speciation
Results (3): Emission Inventory
Results (4): Model Development
References and Acknowledgements • • • Huan Liu, et al. , VOC emissions from the vehicle evaporation process: status and control strategy, Environmental Science & Technology, accepted. Xiaofan Yang, et al. , Vehicular volatile organic compounds losses due to refueling and diurnal process in China: 2010 -2050. Journal of Environmental Sciences, 2015. 33: p. 88 -96. Hongyang Cui, et al. , A Comprehensive Emission Inventory of Volatile Organic Compounds (VOCs) from Vehicles in China, ASAAQ 13, Kobe, Japan. Hanyang Man, et al. , VOCs emissions from the vehicle evaporation process: species and impact analysis, in preparation. Huan Liu, et al. , Key points analysis and options in vehicular evaporative emission test procedures, in preparation. Copyright for CVEEM 2. 0. Contact: liu_env@tsinghua. edu. cn
