This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Modeling the Evolution of Fuel and Lubricant Interactions on the Liner in Internal Combustion Engines
Technical Paper
2018-01-0279
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
In internal combustion engines, a portion of liquid fuel spray may directly land on the liner and mix with oil (lubricant), forming a fuel-oil film (~10μm) that is much thicker than the original oil film (~0.1μm). When the piston retracts in the compression stroke, the fuel-oil mixture may have not been fully vaporized and can be scraped by the top ring into the 1st land crevice and eventually enter the combustion chamber in the format of droplets. Studies have shown that this mechanism is possibly a leading cause for low-speed pre-ignition (LSPI) as the droplets contain oil that has a much lower self-ignition temperature than pure fuel. In this interest, this work aims to study the oil-fuel interactions on the liner during an engine cycle, addressing molecular diffusion (in the liquid film) and vaporization (at the liquid-gas interface) to quantify the amount of fuel and oil that are subject to scraping by the top ring, thereby exploring their implications on LSPI and friction. An analytical model is developed by coupling multi-component heat and mass transfer using an implicit, adaptive-time and fixed-space numerical scheme. The results of this model suggest that a substantial fraction of the fuel-oil mixture still remains on the liner when the piston retracts if the initial fuel film thickness is on the order of 20 μm; this fuel-oil mixing also results in a local oil dilution that can lead to a significant increase in the ring-liner contact force.
Recommended Content
Authors
Topic
Citation
Zhang, Q., Kalva, V., and Tian, T., "Modeling the Evolution of Fuel and Lubricant Interactions on the Liner in Internal Combustion Engines," SAE Technical Paper 2018-01-0279, 2018, https://doi.org/10.4271/2018-01-0279.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 |
Also In
References
- Kassai , M. , Torii , K. , Shiraishi , T. , Noda , T. et al. Research on the Effect of Lubricant Oil and Fuel Properties on LSPI Occurrence in Boosted S. I. Engines SAE Technical Paper 2016-01-2292 2016 10.4271/2016-01-2292
- Dahnz , C. , Han , K. , Spicher , U. , Magar , M. et al. Investigations on Pre-Ignition in Highly Supercharged SI Engines SAE Int. J. Engines 3 1 214 224 2010 10.4271/2010-01-0355
- Zahdeh , A. , Rothenberger , P. , Nguyen , W. , Anbarasu , M. et al. Fundamental Approach to Investigate Pre-Ignition in Boosted SI Engines SAE Int. J. Engines 4 1 246 273 2011 10.4271/2011-01-0340
- Amann , M. , Alger , T. , Westmoreland , B. , and Rothmaier , A. The Effects of Piston Crevices and Injection Strategy on Low-Speed Pre-Ignition in Boosted SI Engines SAE Int. J. Engines 5 3 1216 1228 2012 10.4271/2012-01-1148
- Kassai , M. , Hashimoto , H. , Shiraishi , T. , Teraji , A. et al. Mechanism Analysis on LSPI Occurrence in Boosted S. I. Engines SAE Technical Paper 2015-01-1867 2015 10.4271/2015-01-1867
- Magar , M. , Spicher , U. , Palaveev , S. , Gohl , M. et al. Experimental Studies on the Occurrence of Low-Speed Pre-Ignition in Turbocharged GDI Engines SAE Int. J. Engines 8 2 495 504 2015 10.4271/2015-01-0753
- Cho , H. , Kim , M. , and Min , K. The Effect of Liquid Fuel on the Cylinder Liner on Engine-Out Hydrocarbon Emissions in SI Engines SAE Technical Paper 2001-01-3489 2001 10.4271/2001-01-3489
- Li , J. , Huang , Y. , Alger , T.F. , Matthews , R.D. et al. Liquid Fuel Impingement on in-Cylinder Surfaces as a Source of Hydrocarbon Emissions from Direct Injection Gasoline Engines ASME Journal of Engineering for Gas Turbines and Power 123 3 659 668 2001 10.1115/1.1370398
- Yu , S. and Min , K. Effects of the Oil and Liquid Fuel Film on Hydrocarbon Emissions in Spark Ignition Engines Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 216 9 759 771 2002 10.1243/09544070260340853
- Liu , Y. A Multi-Scale Model Integrating both Global Ring Pack Behavior and Local Oil Transport in Internal Combustion Engines 2017 http://hdl.handle.net/1721.1/108944
- Liu , Y. , Li , Y. , and Tian , T. Development and Application of Ring-Pack Model Integrating Global and Local Processes. Part 2: Ring-Liner Lubrication SAE Int. J. Engines 10 4 1969 1983 2017 10.4271/2017-01-1047
- Linna , J. Contribution of Oil Layer Mechanism to the Hydrocarbon Emissions from Spark-Ignition Engines 1997 http://hdl.handle.net/1721.1/42654
- Linna , J. , Målberg , H. , Bennett , P.J. , Palmer , P.J. et al. Contribution of Oil Layer Mechanism to the Hydrocarbon Emissions from Spark-Ignition Engines SAE Technical Paper 972892 1997 10.4271/972892
- United States Environmental Protection Agency 2007
- United States Environmental Protection Agency 2011
- Antoine , C Vapor Pressure: A New Relationship Between Pressure and Temperature Comptes Rendus des Séances de l'Académie des Sciences 107 681 684 1888
- Soejima , M. , Harigaya , Y. , Hamatake , T. , and Wakuri , Y. Study on Lubricating Oil Consumption from Evaporation of Oil-Film on Cylinder Wall for Diesel Engine SAE Int. J. Fuels Lubr. 10 2 487 501 2017 10.4271/2017-01-0883
- Woschni , G. A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine SAE Technical Paper 670931 1967 10.4271/670931
- Kalva , V.T. 2017
- Yaws , C. The Yaws Handbook of Vapor Pressure (Second Edition): Antoine Coefficients Oxford Gulf Professional Publishing 2015 10.1016/B978-0-12-802999-2.00004-0
- Chilton , T. and Colburn , A. Mass Transfer (Absorption) Coefficients-Prediction from Data on Heat Transfer and Fluid Friction Industrial and Engineering Chemistry 26 1183 1934
- Wilke , C. and Chang , P. Correlation of Diffusion Coefficients in Dilute Solutions AICHE Journal 1 2 264 270 1955 10.1002/aic.690010222
- Reid , R.C. , Prausnitz , J.M. , and Sherwood , T.K. The Properties of Gases and Liquids Third Edition McGraw-Hill 1977 0-07-051790-8
- Yaws , C.L. Transport Properties of Chemicals and Hydrocarbons Second Oxford Gulf Professional Publishing 2014 10.1016/B978-0-323-28658-9.00015-9
- Casey , S. Analysis of Lubricant Film Thickness and Distribution along the Piston/Ring/Liner Interface in a Reciprocating Engine 1995 http://hdl.handle.net/1721.1/31075
- Phen , R. , Richardson , D. , and Borman , G. Measurements of Cylinder Liner Oil Film Thickness in a Motored Diesel Engine SAE Techncial Paper 932789 1993 10.4271/932789
- Luijten , B. , Adomeit , P. , Brunn , A. , and Somers , B. Experimental Investigation of In-Cylinder Wall Wetting in GDI Engines Using a Shadowgraphy Method SAE Technical Paper 2013-01-1604 2013 10.4271/2013-01-1604
- Schulz , F. , Schmidt , J. , Kufferath , A. , and Samenfink , W. Gasoline Wall Films and Spray/Wall Interaction Analyzed by Infrared Thermography SAE Int. J. Engines 7 3 1165 1177 2014 10.4271/2014-01-1446
- Schulz , F. , Samenfink , W. , Schmidt , J. , and Beyrau , F. Systematic LIF Fuel Wall Film Investigation Fuel 172 284 292 2016 10.1016/j.fuel.2016.01.017
- Schulz , F. 2017