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Solid Particle Number and Ash Emissions from Heavy-Duty Natural Gas and Diesel w/SCRF Engines
Technical Paper
2018-01-0362
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Solid and metallic ash particle number (PN) and particulate matter (PM) mass emission measurements were performed on a heavy-duty (HD) on-highway diesel engine and a compressed natural gas (CNG) engine. Measurements were conducted under transient engine operation that included the FTP, WHTC and RMC. Both engines were calibrated to meet CARB ultra low NOX emission target of 0.02 g/hp-hr, a 90% reduction from current emissions limit. The HD diesel engine final exhaust configuration included a number of aftertreatement sub-systems in addition to a selective catalytic reduction filter (SCRF). The stoichiometric CNG engine final configuration included a closed coupled Three Way Catalyst (ccTWC) and an under floor TWC (ufTWC). The aftertreatment systems for both engines were aged for a full useful life (FUL) of 435,000 miles, prior to emissions testing.
PM mass emissions from both engines were comparable and well below the US EPA emissions standard. However, the CNG engine emitted a substantially higher number of solid particles, larger and smaller than 25 nm in diameter, compared to the number of particles emitted from the HD diesel engine for each of the three transient cycles tested. The CNG engine metallic ash particle number emission was also much higher than that of the diesel. The stringent solid particle number regulation in the EU and China will address the CNG particle number emission problem. However, in the USA there is no such regulation to specifically address particle number emissions, which is a short coming.
Ultrafine PN emissions from engines is a health concern. Reducing solid particle number emissions from old and new CNG engines to a level comparable to that of a diesel with DPF is an important task that needs to be addressed by policy makers around the globe.
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Khalek, I., Badshah, H., Premnath, V., and Brezny, R., "Solid Particle Number and Ash Emissions from Heavy-Duty Natural Gas and Diesel w/SCRF Engines," SAE Technical Paper 2018-01-0362, 2018, https://doi.org/10.4271/2018-01-0362.Data Sets - Support Documents
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References
- California Air Resources Board 2015
- California Air Resources Board 2015
- Sharp , C. , Webb , C.C. , and Neely , G. 2017
- Sharp , C. , Webb , C.C. , Neely , G. , Sarlashkar , J.V. et al. Achieving Ultra Low NO X Emissions Levels with a 2017 Heavy-Duty On-Highway TC Diesel Engine and an Advanced Technology Emissions System - NO X Management Strategies SAE Int. J. Engines 10 4 1722 1735 2017 10.4271/2017-01-0958
- Sharp , C. , Webb , C.C. , Yoon , S. , Carter , M. , and Henry , C. Achieving Ultra Low NOX Emissions Levels with a 2017 Heavy-Duty On-Highway TC Diesel Engine - Comparison of Advanced Technology Approaches SAE Int. J. Engines 10 4 1722 1735 2017 10.4271/2017-01-0956
- Sharp , C. , Webb , C.C. , Yoon , S. , Carter , M. , and Henry , C. Achieving Ultra Low NOX Emissions Levels with a 2017 Heavy-Duty On-Highway TC Diesel Engine and an Advanced Technology Emissions System - Thermal Management Strategies SAE Int. J. Engines 10 4 1697 1712 2017 10.4271/2017-01-0954
- Smith , I. , Briggs , T. , Sharp , C. , and Webb , C. Achieving 0.02 g/hp-hr NO x Emissions from a Heavy-Duty Stoichiometric Natural Gas Engine Equipped with Three-Way Catalyst SAE Technical Paper (x) 2017 10.4271/2017-01-0957
- Khalek , I.A. , Bougher , T.L. , Merritt , P.M. , and Zielinska , B. Regulated and Unregulated Emissions from Highway Heavy-Duty Diesel Engines Complying with U.S. Environmental Protection Agency 2007 Emissions Standards J. Air Waste Manage. Assoc. 61 4 427 442 2011 10.3155/1047-3289.61.4.427
- Khalek , I.A. , Blanks , M.G. , Merritt , P.M. , and Zielinska , B. Regulated and Unregulated Emissions from Modern 2010 Emissions-Compliant Heavy-Duty on-Highway Diesel Engines J. Air Waste Manag. Assoc. 65 8 987 1001 2015 10.1080/10962247.2015.1051606
- Khalek , I.A. 2009
- Khalek , I.A. 2013
- Jayaratne , E.R. , Meyer , N.K. , Ristovski , Z.D. , Morawska , L. , and Miljevic , B. Critical Analysis of High Particle Number Emissions from Accelerating Compressed Natural Gas Buses Environ. Sci. Technol. 44 10 3724 3731 2010 10.1021/es1003186
- Amirante , R. , Distaso , E. , Tamburrano , P. , Bari , P. , and Reitz , R.D. 2015 10.4271/2015-24-2518.Copyright
- Thiruvengadam , A. , Besch , M.C. , Yoon , S. , Collins , J. et al. Characterization of Particulate Matter Emissions from a Current Technology Natural Gas Engine Environ. Sci. Technol. 48 14 8235 8242 2014 10.1021/es5005973
- Zheng , Z. , Durbin , T.D. , Karavalakis , G. , Johnson , K.C. et al. Nature of Sub-23-Nm Particles Downstream of the European Particle Measurement Programme (PMP)-Compliant System: A Real-Time Data Perspective Aerosol Sci. Technol. 46 8 886 896 2012 10.1080/02786826.2012.679167
- Alanen , J. , Saukko , E. , Lehtoranta , K. , Murtonen , T. et al. The Formation and Physical Properties of the Particle Emissions from a Natural Gas Engine Fuel 162 155 161 2015 10.1016/j.fuel.2015.09.003
- Alanen , J. , Simonen , P. , Saarikoski , S. , Timonen , H. et al. Comparison of primary and secondary particle formation from natural gas engine exhaust and of their volatility characteristics Atmos. Chem. Phys. Discuss February 1 27 2017 10.5194/acp-2017-44
- Bartley , G. ; Eakle , S.
- EPA https://www.ecfr.gov/cgi-bin/text-idx?tpl=/ecfrbrowse/Title40/40cfr1065_main_02.tpl 2008
- Xue , J. , Li , Y. , Wang , X. , Durbin , T.D. et al. Comparison of Vehicle Exhaust Particle Size Distributions Measured by SMPS and EEPS during Steady-State Conditions Aerosol Sci. Technol. 49 10 984 996 2015 10.1080/02786826.2015.1088146
- Khalek , I.A. 2013
- Apple , J. , Gladis , D.D. , Watts , W. , and Kittelson , D. Measuring Diesel Ash Emissions and Estimating Lube Oil Consumption Using a High Temperature Oxidation Method SAE Int. J. Fuels Lubr. 2 1 850 859 2009 10.4271/2009-01-1843
- Khalek , I.A. and Kittelson , D.B. Real Time Measurement of Volatile and Solid Exhaust Particles Using a Catalytic Stripper SAE 950236 1995 10.4271/950236