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Effects of Ethanol Evaporative Cooling on Particulate Number Emissions in GDI Engines
Technical Paper
2018-01-0360
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The spark ignition engine particulate number (PN) emissions have been correlated to a particulate matter index (PMI) in the literature. The PMI value addresses the fuel effect on PN emission through the individual fuel species reactivity and vapor pressure. The latter quantity is used to account for the propensity of the non-volatile fuel components to survive to the later part of the combustion event as wall liquid films, which serve as sources for particulate emission. The PMI, however, does not encompass the suppression of vaporization by the evaporative cooling of fuel components, such as ethanol, that have high latent heat of vaporization. This paper assesses this evaporative cooling effect on PN emissions by measurements in a GDI engine operating with a base gasoline which does not contain oxygenate, with a blend of the gasoline and ethanol, and with a blend of the gasoline, ethanol, and a hydrocarbon additive so that the blend has the same PMI as the original gasoline. As such, the dilution and the evaporative cooling effects of the ethanol could be separated. Measurements have also been done with methanol and MTBE. The results show that evaporative cooling effect can significantly change the PN emission. The extent of the change, however, depends on the details of the operating condition such as injection timing, engine coolant temperature, and load.
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Chen, Y., Zhang, Y., and Cheng, W., "Effects of Ethanol Evaporative Cooling on Particulate Number Emissions in GDI Engines," SAE Technical Paper 2018-01-0360, 2018, https://doi.org/10.4271/2018-01-0360.Data Sets - Support Documents
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References
- Murphy , D.M. Something in the Air Science 307 5717 1888 1890 2005
- Kaiser , J. Mounting Evidence Indicts Fine-Particle Pollution Science 307 5717 1858 1861 2005
- Gunter , O. Toxicology of Ultrafine Particles: In vivo Studies Philosophical Transactions of the Royal Sociey of London, Series A, Mathematical, Physics and Engineering Science 358 1775 2719 2740 2000
- Giechaskiel , B. , Mamakos , A. , Andersson , A.D. , Dilara , P. et al. Measurement of Automotive Nonvolatile Particle Number Emissions within the European Legislative Framework: A Review Aerosol Science and Technology 46 7 719 749 2012
- Kittelson , D.B. Engines and Nanoparticles: A Review Journal of Aerosol Science 29 5 575 588 1998
- Whitaker , P. , Kapus , P. , Ogris , M. , and Hollerer , P. Measures to Reduce Particulate Emissions from Gasoline DI Engines SAE Int. J. Engines 4 1 1498 1512 2011 10.4271/2011-01-1219
- Sabathil , D. , Koenigstein , A. , Schaffner , P. , Fritzsche , J. et al. The Influence of DISI Engine Operating Parameters on Particle Number Emissions SAE Technical Paper 2011-01-0143 2011 10.4271/2011-01-0143
- Piock , W. , Hoffmann , G. , Berndorfer , A. , Salemi , P. et al. Strategies Towards Meeting Future Particulate Matter Emission Requirements in Homogeneous Gasoline Direct Injection Engines SAE Int. J. Engines 4 1 1455 1468 2011 10.4271/2011-01-1212
- Peckham , M. , Finch , A. , Campbell , B. , Price , P. et al. Study of Particle Number Emissions from a Turbocharged Gasoline Direct Injection (GDI) Engine Including Data from a Fast-Response Particle Size Spectrometer SAE Technical Paper 2011-01-1224 2011 10.4271/2011-01-1224
- Ketterer , J. and Cheng , W. On the Nature of Particulate Emissions from DISI Engines at Cold-Fast-Idle SAE Int. J. Engines 7 2 986 994 2014 10.4271/2014-01-1368
- Oh , C. and Cheng , W. Assessment of Gasoline Direct Injection Engine Cold Start Particulate Emission Sources SAE Int. J. Engines 10 4 1556 1565 2017 10.427/2017-01-0795
- Aikawa , K. , Sakurai , T. , and Jetter , J. Development of a Predictive Model for Gasoline Vehicle Particulate Matter Emissions SAE Int. J. Fuels Lubr. 3 2 610 622 2010 10.4271/2010-01-2115
- Aikawa , K. and Jetter , J. Impact of Gasoline Composition on Particulate Matter Emissions from a Direct-Injection Gasoline Engine: Applicability of the Particulate Matter Index International Journal of Engineering and Research 15 3 2998 2306 2014
- Khalek , I. , Bougher , T. , and Jetter , J. Particle Emissions from a 2009 Gasoline Direct Injection Engine Using Different Commercially Available Fuels SAE Int. J. Fuels Lubr. 3 2 623 637 2010 10.4271/2010-01-2117
- Vuk , C. Fuel Property Effects on Particulates in Spark Ignition Engines SAE Technical Paper 2013-01-1124 2013 10.4271/2013-01-1124
- Butler , A. , Sobotowski , R. , Hoffman , G. , and Machiele , P. Influence of Fuel PM Index and Ethanol Content on Particulate Emissions from Light-Duty Gasoline Vehicles SAE Technical Paper 2015-01-1072 2015 10.4271/2015-01-1072
- Sobotowski , R. , Butler , A. , and Guerra , Z. A Pilot Study of Fuel Impacts on PM Emissions from Light-Duty Gasoline Vehicles SAE Technical Paper 2015-01-9071 2015 10.4271/2015-01-9071
- Barrientos , E. , Anderson , J. , Maricq , M. , and Boehman , A. Particulate Matter Indices Using Fuel Smoke Point for Vehicle Emissins with Gasoline, Ethanol Blends, and Butanol Blends Combustion & Flame 167 308 319 2016
- Cambustion Limited Fast-response Particle Size Analyzer http://www.cambustion.com/products/dms500/engine