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Combined Fuel and Lubricant Effects on Low Speed Pre-Ignition
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 10, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Many studies on low speed pre-ignition have been published to investigate the impact of fuel properties and of lubricant properties. Fuels with high aromatic content or higher distillation temperatures have been shown to increase LSPI activity. The results have also shown that oil additives such as calcium sulfonate tend to increase the occurrence of LSPI while others such as magnesium sulfonate tend to decrease the occurrence. Very few studies have varied the fuel and oil properties at the same time. This approach is useful in isolating only the impact of the oil or the fuel, but both fluids impact the LSPI behavior of the engine simultaneously.
To understand how the lubricant and fuel impacts on LSPI interact, a series of LSPI tests were performed with a matrix which combined fuels and lubricants with a range of LSPI activity. This study was intended to determine if a low activity lubricant could suppress the increased LSPI from a high activity fuel, and vice versa. The results showed that a low activity fuel was insensitive to the lubricant used in the test, while a high activity fuel could be moderated by a low activity lubricant. The combination of a high activity fuel and high activity lubricant, as expected, yielded a large number of LSPI events.
These results help to understand how formulation changes to the lubricant or to the fuel may impact the other fluid, particularly with respect to regional variations in fuel specification and in lubricant additive standards.
CitationKocsis, M., Briggs, T., and Anderson, G., "Combined Fuel and Lubricant Effects on Low Speed Pre-Ignition," SAE Technical Paper 2018-01-1669, 2018, https://doi.org/10.4271/2018-01-1669.
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- Kocsis, M., Briggs, T., and Anderson, G. , “The Impact of Lubricant Volatility, Viscosity and Detergent Chemistry on Low Speed Pre-Ignition Behavior,” SAE Int. J. Engines 10(3):1019-1035, 2017.
- Kocsis, M., Anderson, G., and Briggs, T. , “Real Fuel Effects on Low Speed Pre-Ignition,” SAE Technical Paper 2018-01-1456 , 2018, doi:10.4271/2018-01-1456.
- Chapman, E., Davis, R., Studzinski, W., and Geng, P. , “Fuel Octane and Volatility Effects on the Stochastic Pre-Ignition Behavior of a 2.0L Gasoline Turbocharged DI Engine,” SAE Int. J. Engines 7(2):379-389, 2014.
- Mansfield, A., Chapman, E., and Briscoe, K. , “Effect of Market Variations in Gasoline Composition on Aspects of Stochastic Pre-Ignition,” Fuel 184:390-400, 2016.
- Amann, M., Mehta, D., and Alger, T. , “Engine Operating Condition and Gasoline Fuel Composition Effects on Low-Speed Pre-Ignition in High-Performance Spark Ignited Gasoline Engines,” SAE Int. J. Engines 4(1):274-285, 2011, doi:10.4271/2011-01-0342.
- 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, doi:10.4271/2016-01-2292.
- Ritchie, A., Boese, D., and Young, A. , “Controlling Low-Speed Pre-Ignition in Modern Automotive Equipment Part 3: Identification of Key Additive Component Types and Other Lubricant Composition Effects on Low-Speed Pre-Ignition,” SAE Int. J. Engines 9(2):832-840, 2016, doi:10.4271/2016-01-0717.
- Boese, D., Ritchie, A., and Young, A. , “Controlling Low-Speed Pre-Ignition in Modern Automotive Equipment: Defining Approaches to and Methods for Analyzing Data in New Studies of Lubricant and Fuel-Related Effects (Part 2),” SAE Technical Paper 2016-01-0716 , 2016, doi:10.4271/2016-01-0716.
- Michlberger, A., Sutton, M., and Dohner, B. , “Low Speed Pre-Ignition (LSPI) Durability a Study of LSPI in Fresh and Aged Engine Oils,” SAE Technical Paper 2018-01-0934 , 2018, doi:10.4271/2018-01-0934.
- Fletcher, K., Dingwell, L., Yang, K., Lam, W. et al. , “Engine Oil Additive Impacts on Low Speed Pre-Ignition,” SAE Int. J. Fuels Lubr. 9(3):612-620, 2016, doi:10.4271/2016-01-2277.
- Hirano, S., Yamashita, M., Fujimoto, K., and Kato, K. , “Investigation of Engine Oil Effect on Abnormal Combustion in Turbocharged Direct Injection - Spark Ignition Engines (Part 2),” SAE Technical Paper 2013-01-2569 , 2013, doi:10.4271/2013-01-2569.
- Andrews, A., Burns, R., Dougherty, R., Deckman, D. et al. , “Investigation of Engine Oil Base Stock Effects on Low Speed Pre-Ignition in a Turbocharged Direct Injection SI Engine,” SAE Int. J. Fuels Lubr. 9(2):400-407, 2016, doi:10.4271/2016-01-9071.
- Elliott, I., Sztenderowicz, M., Sinha, K., Takeuchi, Y. et al. , “Understanding Low Speed Pre-Ignition Phenomena across Turbo-Charged GDI Engines and Impact on Future Engine Oil Design,” SAE Technical Paper 2015-01-2028 , 2015, doi:10.4271/2015-01-2028.
- NIST/SEMATECH , Apr. 2012, [Online], http://www.itl.nist.gov/div898/handbook/.
- DeGroot, M.H. and Schervish, M.J. , Probability and Statistics (Addison-Wesley, 2002).