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Particulate Mass and Number Emissions from Light-duty Low Emission Gasoline Vehicles
Technical Paper
2010-01-0795
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Particulate matter (PM) emitted from light-duty gasoline powered vehicles is under increasing scrutiny due to potential adverse health effects and on ever increasing number of vehicles in the fleet. In this program, a group of California ULEV II and SULEV II certified light-duty gasoline vehicles were tested for PM mass and number emissions and compared with older model LEV I certified gasoline vehicles under the Federal Test Procedure (FTP) test cycle. PM mass and number emissions were collected from a Constant Volume Sampling (CVS) full dilution system. PM mass samples were collected with the gravimetric method. Filter conditioning and weighing procedures are in compliance with the Code of Federal Regulations (CFR) Part 1065. Total particles (solid and volatile) were measured using multiple fast response particle counting instruments including a TSI Engine Exhaust Particle Sizer (EEPS) and two Condensation Particle Counters (CPC).
Test results show that PM mass and number emissions from both LEV I and LEV II vehicles are highest during engine cold starting. After the engine is warmed up, PM mass and total particle number are reduced significantly, and PM mass is reduced to near background levels. PM mass emissions from LEV II vehicles are significantly lower than from older LEV I vehicles in phase 1 of the FTP cycle. Test results also indicate total particle number emissions measured from the current sampling method appear to be repeatable and the Coefficient of Variance (COV) for particle number measurement is lower than the COV from the filter-based gravimetric method at very low PM emission levels for LEV II vehicles.
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Zhang, S., McMahon, W., Toutoundjian, H., Cruz, M. et al., "Particulate Mass and Number Emissions from Light-duty Low Emission Gasoline Vehicles," SAE Technical Paper 2010-01-0795, 2010, https://doi.org/10.4271/2010-01-0795.Also In
References
- California Air Resources Board Low-Emission Vehicle Regulations 2001 http://www.arb.ca.gov/regact/levii01/levii01.htm
- California Air Resources Board Emission Inventory http://www.arb.ca.gov/app/emsinv/emssumcat_query
- Graskow, B.R. Kittelson, D.B. Abdul-Khalek, I.S. Ahmadi, M. Morris, J. “Characterization of Exhaust Particulate Emissions from a Spark Ignition Engine,” SAE Technical Paper 980528 1998
- Kittelson, D.B “Ultrafine Particle Formation Mechanisms,” SCAQMD Conference on Ultrafine Particles: The Science, Technology, and Policy Issues April 30 May 2 2006
- Li, W. Collins, J.F. Norbeck, J.M. Cocker D.R. III Sawant A. “Assessment of Particulate Matter Emissions from a Sample of In-Use ULEV and SULEV Vehicles,” SAE Technical Paper 2006-01-1076 2006
- Electronic Code of Federal Regulations http://ecfr.gpoaccess.gov/cgi/t/text
- Khalek, I.A. “Measurement System for Solid and Volatile Exhaust Particle Size, Number, and Mass Emissions,” SAE Technical Paper 2007-01-0307 2007
- Kittelson, D.B. Abdul-Khalek I.S. “Formation of Nanoparticles during Exhaust Dilution” 1999 EFI members Conference: “Fuels, Lubricant, Engines, & Emissions” January 18-20 1999
- European Regulation No. 83 http://www.unece.org/trans/main/wp29/wp29regs/r083r3e.pdf
- UN-GRPE PMP Phase 3 - Inter-laboratory Correlation Exercise: Framework and Laboratory Guide http://www.unece.org/trans/main/wp29/wp29wgs/wp29grpe/pmp14.html
- Zhang, S. McMahon, W. Huai, T. Ayala, A. Wei, Q. “Final Results from CARB's Evaluation Testing of the European Reference Vehicle from the Particulate Measurement Program” the 18th CRC On-Road Vehicle Emissions Workshop San Diego, U.S.A. March 31 April 1 2008
- 40 Code of Federal Regulations Part 86. 1312-2007 2001