This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Investigation of Engine Oil Effect on Abnormal Combustion in Turbocharged Direct Injection - Spark Ignition Engines (Part 2)
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 14, 2013 by SAE International in United States
Annotation ability available
As one of spark ignition (SI) engine solutions to improve fuel economy while maintaining drivability, concept of combing turbocharging and direct injection (DI) fuel injection system with engine down-sizing has increased its application in the market. Abnormal combustion phenomena referred to as Low Speed Pre-Ignition (LSPI) has been recognized as potential restriction to improve low speed engine torque that contributes fuel economy improvement. As reported in the part 1 , the study showed that engine oil composition had significant influence on the frequency of LSPI in both preventive and contributory effects.
Further investigation was conducted to evaluate engine oil formulation variables and other factors that may have influences on the LSPI, such as engine oil degradation.
Engine test that consisted of 2 phases was designed in order to confirm the correlation between LSPI frequency and engine oil degradation. The LSPI frequency measurement phase and engine oil degradation operation phase were conducted alternatively without changing engine oil. It was observed that the engine oil degradation increased the LSPI frequency.
Several different types of engine oils, including both experimental oils that represent possible chemical & physical properties found in the market and a few commercially available engine oil products that meet industry standards, such as API S category and ACEA specification, were also evaluated to understand the feasibility of engine oil that has LSPI prevention performance.
The test results showed it is feasible to formulate the engine oil that reduces LSPI significantly while maintaining basic engine oil performances.
CitationHirano, 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, https://doi.org/10.4271/2013-01-2569.
- 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 1017 1024 2012 10.4271/2012-01-1615
- 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
- Kunde , O. , Hansen J. , Zenner , T. , Kapus , P. et al. The New 2.0 SCTi EcoBoost Gasoline Engine from Ford 19 Aachenar Kolloquium
- ASTM D6593 Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions
- Engine Oil Licensing and Certification System, API 1509 Seventeenth September 2012
- Sparol International Aps An Additive for Liquid Fuel WO1987/000193 1987 01 15
- General Motors Corporation Diesel fuel comprising cerium and manganese additives for improved trap regenerability U. S. Patent 4,568,357 1986 02 04
- Quigley , M. and Seguelong , T. Series Application of a Diesel Particulate Filter with a Ceria-Based Fuel-Borne Catalyst: Preliminary Conclusions after One Year of Service SAE Technical Paper 2002-01-0436 2002 10.4271/2002-01-0436
- ASTM D4727 Standard Test Method for Oxidation Stability of Gasoline Automotive Engine Oils by Thin-Film Oxygen Uptake (TFOUT)