This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Comparison of Stochastic Pre-Ignition Behaviors on a Turbocharged Gasoline Engine with Various Fuels and Lubricants
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 17, 2016 by SAE International in United States
Annotation ability available
Stochastic pre-ignition (SPI) has been commonly observed in turbocharged spark-ignition direct-injection (SIDI) engines at low-speed and high-load conditions, which causes extremely high cylinder pressures that can damage an engine immediately or degrade the engine life. The compositions and properties of fuels and lubricants have shown a strong impact on SPI frequency. This study experimentally evaluated SPI behaviors on a 2.0-liter 4-cylinder turbocharged SIDI engine with China V market fuel and China fuel blended to US Tier II fuel specifications. China V market fuel showed significantly higher SPI frequency and severity than China blended US Tier II fuel, which was attributed to its lower volatility between 100 °C to 150 °C (or lower T60 to T90 in the distillation curve). Two different formulations of lubricant oils were also tested and their impact on SPI were compared. Lubricants formulated with lower Calcium, more Molybdenum, and reduced propensity to absorb fuel are effective in significantly reducing SPI frequency and severity. This study provided important insights into the fuel differences in various regions and their impact on SPI behaviors on the same engine with the same controls and calibrations.
CitationHe, Y., Liu, Z., Stahl, I., Zhang, G. et al., "Comparison of Stochastic Pre-Ignition Behaviors on a Turbocharged Gasoline Engine with Various Fuels and Lubricants," SAE Technical Paper 2016-01-2291, 2016, https://doi.org/10.4271/2016-01-2291.
- 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
- 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
- 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. Fuels Lubr. 7 2 2014 10.4271/2014-01-1226
- 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 10.4271/2011-01-0342
- Takeuchi , K. , Fujimoto , K. , Hirano , S. and Yamashita , M. Investigation of Engine Oil Effect on Abnormal Combustion in Turbocharged Direct Injection - Spark Ignition Engines SAE Int. J. Fuels Lubr. 5 3 2012 10.4271/2012-01-1615
- Takeuchi , K. , Fujimoto , K. , Hirano , S. and Yamashita , M. Investigation of Engine Oil Effect on Abnormal Combustion in Turbocharged Direct Injection - Spark Ignition Engines (Part 2) SAE Technical Paper, 2013-01-2569 2013 10.4271/2013-01-2569
- Welling , O. , Collings , N. , Williams , J. , and Moss , J. Impact of Lubricant Composition on Low-speed Pre-Ignition SAE Technical Paper 2014-01-1213 2014 10.4271/2014-01-1213
- Welling , O. , Moss , J. , Williams , J. , and Collings , N. Measuring the Impact of Engine Oils and Fuels on Low-Speed Pre-Ignition in Downsized Engines SAE Int. J. Fuels Lubr. 7 1 2014 10.4271/2014-01-1219
- 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 2012 10.4271/2012-01-1148
- Okada , Y. , Miyashita , S. , Izumi , Y. , and Hayakawa , Y. Study of Low-Speed Pre-Ignition in Boosted Spark Ignition Engine SAE Int. J. Engines 7 2 2014 10.4271/2014-01-1218
- 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