This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of a Standardized Test to Evaluate the Effect of Gasoline Engine Oil on the Occurrence of Low Speed Pre-Ignition - The Sequence IX Test
Technical Paper
2018-01-1808
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The study described in this paper covers the development of the Sequence IX Low Speed Pre-Ignition (LSPI) test for the new engine oil category, ILSAC GF-6. The purpose of the Sequence IX test is to evaluate a lubricant’s ability to protect against LSPI events which are prevalent when operating a highly boosted/downsized gasoline direct-injected engine. LSPI is characterized as a combustion event that starts before ignition spark, typically followed by excessive in-cylinder pressures and heavy knock, which can cause severe engine damage and failure. Industry research has shown that oil formulation can contribute to the frequency of LSPI activity. The Sequence IX test was developed using a turbocharged gasoline direct-injected 2.0 liter Ford Ecoboost engine with dual independent variable cam timing. The engine was modified with in-cylinder pressure sensors and a high-resolution crank angle encoder to characterize individual engine combustion cycles and identify potential LSPI events. Multiple designed experiments were conducted to identify the engine operating conditions that would consistently produce LSPI events. Additional testing was conducted at these engine operating conditions using multiple engine oil formulations to evaluate the ability of the test to discriminate between oils. Once the test conditions were selected and the reference engine oils were identified, a precision matrix was conducted at three separate laboratories to establish test repeatability and reproducibility. The Sequence IX LSPI test has been approved for inclusion in the ILSAC GF-6 and API SN Plus categories, and is expected to be an integral part of the testing required to qualify passenger car engine oils.
Recommended Content
Authors
Citation
Mounce, F., "Development of a Standardized Test to Evaluate the Effect of Gasoline Engine Oil on the Occurrence of Low Speed Pre-Ignition - The Sequence IX Test," SAE Technical Paper 2018-01-1808, 2018, https://doi.org/10.4271/2018-01-1808.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
Unnamed Dataset 6 |
Also In
References
- 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
- Kalghatgi , G. and Bradley , D. Int. J. Engine Research 2012 10.1177/1468087411431890
- Amann , N. , 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
- Amann , M. , Alger , T. , and Mehta , D. The Effect of EGR on Low-Speed Pre-Ignition in Boosted SI Engines SAE Int. J. Engines 4 1 235 245 2011 10.4271/2011-01-0339
- 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
- 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 10.4271/2017-01-0685
- 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 10.4271/2016-01-0717
- 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
- API 1509 Engine Oil Licensing and Certification System Seventeenth 2012
- ASTM Standard Specification 2015
- Haenel , P. , Seyfried , P. , Kleeberg , H. , and Tomazic , D. Systematic Approach to Analyze and Characterize Pre-Ignition Events in Turbocharged Direct-Injected Gasoline Engines SAE Technical Paper 2011-01-0343 2011 10.4271/2011-01-0343
- 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 10.4271/2016-01-0716
- Boese , D. , and Ritchie , 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 20th International Colloquium Tribology Stuttgart, Germany January 12-14 2016
- ASTM Test Monitoring Center 2017