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Particulates from a CNG DI SI Engine during Warm-Up
Technical Paper
2021-01-0630
ISSN: 0148-7191, e-ISSN: 2688-3627
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SAE WCX Digital Summit
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English
Abstract
To assist efforts reducing harmful emissions from internal combustion engines, particulate formation was investigated in a compressed natural gas (CNG) Direct Injection single-cylinder SI engine in warm-up conditions. This involved tests at low engine speed and load, with selected engine coolant temperatures ranging from 15 to 90 °C, and use of a gasoline direct injection (GDI) system as a standard reference system. Total particulate number (PN), their size distribution, standard emissions, fuel consumption and rate of heat release were analyzed, and an endoscope with high-speed video imaging was used to observe combustion luminescence and soot formation-related phenomena.
The results show that PN was strongly influenced by changes in coolant water temperature in both the CNG DI and GDI systems. However, the CNG DI engine generated 1 to 2 orders of magnitude lower PN than the GDI system at all tested temperatures. The PN decreased in both systems when the coolant temperature increased. The results also show that PN was sensitive to a broader engine coolant temperature range in the GDI system. However, PN was around two orders of magnitude higher at the lowest coolant temperature (15 °C) than at the highest temperature (90 °C) in the CNG DI system. In homogeneous CNG combustion (unlike gasoline combustion) high-speed video images revealed no diffusion or yellow flame anywhere in the cylinder, even at the lowest coolant temperature. Thus, no soot formation location could be determined from the images in CNG cases. Overall, engine measurements showed that the CNG DI engine emitted lower standard emissions (CO2, CO, HC, NOx) and PN than the GDI system across the experimental range of engine coolant temperatures.
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Melaika, M., Etikyala, S., and Dahlander, P., "Particulates from a CNG DI SI Engine during Warm-Up," SAE Technical Paper 2021-01-0630, 2021, https://doi.org/10.4271/2021-01-0630.Data Sets - Support Documents
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References
- EPA 2014 Control of Air Pollution from Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards http://www.gpo.gov/fdsys/pkg/FR-2014-04-28/pdf/2014-06954.pdf
- EPA Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards and Highway Diesel Fuel Sulfur Control Requirements US Environmental Protection Agency, Final Rule Federal Register 66 12 5002 5193 2001 http://www.gpo.gov/fdsys/pkg/FR-2001-01-18/pdf/01-2.pdf
- EU 2009 http://data.europa.eu/eli/reg/2009/595/oj
- EU 2007 http://data.europa.eu/eli/reg/2007/715/oj
- Lahuerta , J. , and Samuel , S. Numerical Simulation of Warm-Up Characteristics and Thermal Management of a GDI Engine SAE Technical Paper 2013-01-0870 2013 https://doi.org/10.4271/2013-01-0870
- Heywood , J.B. Internal Combustion Engine Fundamentals McGraw-Hill 1988 960 10: 007028637X
- Whelan , I. , Smith , W. , Timoney , D. , and Samuel , S. The Effect of Engine Operating Conditions on Engine-out Particulate Matter from a Gasoline Direct-Injection Engine During Cold-Start SAE Technical Paper 2012-01-1711 2012 https://doi.org/10.4271/2012-01-1711
- Bielaczyc , P. , Woodburn , J. , and Szczotka , A. Investigations into Particulate Emissions from Euro 5 Passenger Cars with DISI Engines Tested at Multiple Ambient Temperatures SAE Technical Paper 2015-24-2517 2015 https://doi.org/10.4271/2015-24-2517
- Tong , K. , Quay , B. , Zello , J. , and Santavicca , D. Fuel Volatility Effects on Mixture Preparation and Performance in a GDI Engine during Cold Start SAE Technical Paper 2001-01-3650 2001 https://doi.org/10.4271/2001-01-3650
- Xiong , Q. , Gupta , A. , Kuboyama , T. , Moriyoshi , Y. et al. Effects of Coolant Temperature and Fuel Properties on Soot Emission from a Spark-ignited Direct Injection Gasoline Engine SAE Technical Paper 2019-01-2352 2019 https://doi.org/10.4271/2019-01-2352
- Ahlvik , P. , Almén , J. , Westerholm , R. , and Ludykar , D. Impact of a Block Heater on Regulated and Some Unregulated Emissions from a Gasoline Fueled Car at Low Ambient Temperatures SAE Technical Paper 972908 1997 https://doi.org/10.4271/972908
- Tao , J. , Xia , C. , Mao , K. , Chen , W. et al. Effects of Spark Timing with Other Engine Operating Parameters on the Particulate Emissions of a Dualinjection Gasoline Engine During Warm-up Conditions SAE Technical Paper 2019-01-2214 2019 https://doi.org/10.4271/2019-01-2214
- Bromberg , L. , and Cohn , D. Optimized PFI+DI Operation For Minimizing DI Gasoline Engine Particulates SAE Technical Paper 2018-01-1415 2018 https://doi.org/10.4271/2018-01-1415
- Storey , J. , Moses-DeBusk , M. , Huff , S. , Thomas , J. et al. Characterization of GDI PM during Vehicle Start-Stop Operation SAE Technical Paper 2019-01-0050 2019 https://doi.org/10.4271/2019-01-0050
- Koczak , J. , Boehman , A. , and Brusstar , M. Particulate Emissions in GDI Vehicle Transients: An Examination of FTP, HWFET, and US06 Measurements SAE Technical Paper 2016-01-0992 2016 https://doi.org/10.4271/2016-01-0992
- Song , H. , Liu , C. , Li , F. , Wang , Z. et al. A Comparative Study of Using Diesel and PODEn as Pilot Fuels for Natural Gas Dual-fuel Combustion Fuel 188 418 426 2017
- Martins , A.A. , Rocha , R.A.D. , and Sodre , J.R. Cold Start and Full Cycle Emissions from a Flexible Fuel Vehicle Operating with Natural Gas, Ethanol and Gasoline Journal of Natural Gas Science and Engineering 17 94 98 2014
- Zhu , L. , He , Z.Y. , Xu , Z. , Gao , Z. et al. Improving Cold Start, Combustion and Emission Characteristics of a Lean Burn Spark Ignition Natural Gas Engine with Multi-Point Hydrogen Injection Applied Thermal Engineering 121 83 89 2017
- Boretti , A. , Lappas , P. , Zhang , B. , and Mazlan , S. CNG Fueling Strategies for Commercial Vehicles Engines-A Literature Review SAE Technical Paper 2013-01-2812 2013 https://doi.org/10.4271/2013-01-2812
- Moon , S. Potential of Direct-Injection for the Improvement of Homogeneous-Charge Combustion in Spark-Ignition Natural Gas Engines Applied Thermal Engineering 136 41 48 2018 10.1016/j.applthermaleng.2018.01.068
- Hofmann , P. , Hofherr , T. , Hoffmann , G. , and Preuhs , J.F. Potential of CNG Direct Injection for Downsizing Engines MTZ Worldwide 77 7-8 28 35 2016 10.1007/s38313-016-0074-6
- Bielaczyc , P. , Woodburn , J. , and Szczotka , A. Particulate Emissions from European Vehicles Featuring Direct Injection Spark Ignition Engines Tested Under Laboratory Conditions SAE Int. J. Fuels Lubr 7 2 580 590 2014 https://doi.org/10.4271/2014-01-1608
- 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 8235 8242 2014 10.1021/es5005973
- Guido , C. , Fraioli , V. , Napolitano , P. , Alfuso , S. et al. Emissive Behavior of a Heavy-Duty SI Gas Engine During WHTC SAE Technical Paper 2019-24-0121 2019 https://doi.org/10.4271/2019-24-0121
- Toumasatos , Z. , Kontses , A. , Doulgeris , S. , Samaras , Z. , and Ntziachristos , L. Particle Emissions Measurements on CNG Vehicles Focusing on Sub-23nm Aerosol Science and Technology 55 2 182 193 2020 10.1080/02786826.2020.1830942
- Napolitano , P. , Guido , C. , Beatrice , C. , Fraioli , V. et al. Particle and Gaseous Emissions from a Heavy-Duty SI Gas Engine over WHTC Driving Cycles SAE Int. J. Adv. & Curr. Prac. in Mobility 2 1 357 367 2020 https://doi.org/10.4271/2019-01-2222
- Adlercreutz , L. , Cronhjort , A. , and Stenlaas , O. Particle Emission Measurements in a SI CNG Engine Using Oils with Controlled Ash Content SAE Technical Paper 2019-01-0053 2019 https://doi.org/10.4271/2019-01-0053
- Maier , A. , Klaus , U. , Dreizler , A. , and Rottengruber , H. Fuel-Independent Particulate Emissions in an SIDI Engine SAE Int. J. Engines 8 3 1334 1341 2015 https://doi.org/10.4271/2015-01-1081
- Amirante , R. , Distaso , E. , Tamburrano , P. , and Reitz , R. Measured and Predicted Soot Particle Emissions from Natural Gas Engines SAE Technical Paper 2015-24-2518 2015 https://doi.org/10.4271/2015-24-2518
- Catapano , F. , Di Iorio , S. , Sementa , P. , and Vaglieco , B. Particle Formation and Emissions in an Optical Small Displacement SI Engine Dual Fueled with CNG DI and Gasoline PFI SAE Technical Paper 2017-24-0092 2017 https://doi.org/10.4271/2017- 24-0092
- Zhiqin , J. Dual-Fuel Combustion in a Heavy-Duty Engine 2018 978-91-7597-696-9
- Svensk Standard SS-EN16723-2:2017 Natural Gas and Biomethane for Use in Transport and Biomethane for Injection in the Natural Gas Network - Part 2: Automotive Fuels Specification 2017
- Ramadhas , A. , Singh , P. , Mathai , R. , and Sehgal , A. Impact of Ambient Temperature Conditions on Cold Start Combustion, Gaseous and Particle Emissions from Gasoline Engines SAE Technical Paper 2017-01-2286 2017 https://doi.org/10.4271/2017-01-2286
- Li , H. , Andrews , G. , Savvidis , D. , Daham , B. et al. Study of Thermal Characteristics, Fuel Consumption and Emissions during Cold Start Using an On-Board Measuring Method for SI Car Real World Urban Driving SAE Technical Paper 2007-01-2065 2007 https://doi.org/10.4271/2007-01-2065
- Alkidas , A. , and Drews , R. Effects of Mixture Preparation on HC Emissions of a S.I. Engine Operating Under Steady-State Cold Conditions SAE Technical Paper 961958 1996 https://doi.org/10.4271/961958
- Price , P. , Stone , R. , OudeNijeweme , D. , and Chen , X. Cold Start Particulate Emissions from a Second Generation DI Gasoline Engine SAE Technical Paper 2007-01-1931 2007 https://doi.org/10.4271/2007-01-1931
- Sevik , J. , Pamminger , M. , Wallner , T. , Scarcelli , R. et al. Performance, Efficiency and Emissions Assessment of Natural Gas Direct Injection compared to Gasoline and Natural Gas Port-Fuel Injection in an Automotive Engine SAE Int. J. Engines 9 2 1130 1142 2016 https://doi.org/10.4271/2016-01-0806
- Köpple , F. , Seboldt , D. , Jochmann , P. , Hettinger , A. et al. Experimental Investigation of Fuel Impingement and Spray-Cooling on the Piston of a GDI Engine via Instantaneous Surface Temperature Measurements SAE Int. J. Engines 7 3 1178 1194 2014 https://doi.org/10.4271/2014-01-1447
- Raza , M. , Chen , L. , Leach , F. , and Ding , S. A Review of Particulate Number (PN) Emissions from Gasoline Direct Injection (GDI) Engines and Their Control Techniques Energies 11 6 1 26 2018 10.3390/en11061417
- Drake , M. , Fansler , T. , Solomon , A. , and Szekely , G. Piston Fuel Films as a Source of Smoke and Hydrocarbon Emissions from a Wall-Controlled Spark-Ignited Direct-Injection Engine SAE Technical Paper 2003-01-0547 2003 https://doi.org/10.4271/2003-01-0547
- Karavalakis , G. , Hajbabaei , M. , Jiang , Y. , Yang , J. et al. Regulated, Greenhouse Gas, and Particulate Emissions from Lean-Burn and Stoichiometric Natural Gas Heavy-Duty Vehicles on Different Fuel Compositions Fuel 175 146 156 2016 10.1016/j.fuel.2016.02.034
- Tian , T. Dynamic Behaviors of Piston Rings and their Practical Impact. Part 1: Ring Flutter and Ring Collapse and their Effects on Gas Flow and Oil Transport Proc Instn Mech Engrs Part J: J Engineering Tribology 216 2002 10.1243/135065002760199961
- Frolund , K. , Schramm Phd , J. , Noondby , B. , Tian , T. et al. An Investigation of the Cylinder Wall Oil Film Development during Warm-Up of An SI Engine Using Laser-Induced Fluorescence SAE Technical Paper 971699 1997 https://doi.org/10.4271/971699
- Usman , A. , and Park , C.W. Transient Lubrication of Piston Compression Ring during Cold Start-Up of SI Engine Int. J. Precis. Eng. and Manuf.-Green Tech 3 81 90 2016 10.1007/s40684-016-0011-9
- Schueck , C. , Koch , T. , Samenfink , W. , Schuenemann , E. et al. Optical Investigations of Soot Formation Mechanisms and Possible Countermeasures on a Turbocharged Port Fuel Injection SI Engine SAE Int. J. Engines 9 4 2010 2021 2016 https://doi.org/10.4271/2016-01-2163