This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Direct Measurement and Chemical Speciation of Top Ring Zone Liquid During Engine Operation
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2015 by SAE International in United States
Annotation ability available
The present manuscript consists of proof of concept experiments involving direct measurements and detailed chemical speciation from the top ring zone of a running engine. The work uses a naturally aspirated single cylinder utility engine that has been modified to allow direct liquid sample acquisition from behind the top ring. Samples were analyzed and speciated using gas chromatographic techniques. Results show that the liquid mixture in the top ring zone is neither neat lubricant nor fuel but a combination of the two with unique chemical properties. At the tested steady state no-load operating condition, the chemical species of the top ring zone liquid were found to be highly dependent on boiling point, where both low reactivity higher boiling point fuel species and lubricant are observed to be the dominant constituents. The results show that at least for the tested condition, approximately 25% of the top ring zone is comprised of gasoline fuel like molecules, which are dominated by high octane number aromatic species, while the remainder of the liquid is comprised of lubricant like species.
CitationSplitter, D., Burrows, B., and Lewis, S., "Direct Measurement and Chemical Speciation of Top Ring Zone Liquid During Engine Operation," SAE Technical Paper 2015-01-0741, 2015, https://doi.org/10.4271/2015-01-0741.
- Saville , S. , Gainey , F. , Cupples , S. , Fox , M. et al. A Study of Lubricant Condition in the Piston Ring Zone of Single-Cylinder Diesel Engines Under Typical Operating Conditions SAE Technical Paper 881586 1988 10.4271/881586
- Watson S.A.G. lubricant-derived ash -in-engine sources and opportunities for reduction PhD thesis Massachusetts Institute of Technology 2010
- Watson S.A.G Private Communication 2013
- Nattrass , S. , Thompson , D. , and McCann , H. First In-Situ Measurement of Lubricant Degradation in the Ring Pack of a Running Engine SAE Technical Paper 942026 1994 10.4271/942026
- Lee , P.M. , Priest , M. , Stark , M.S. , Wilkinson , J.J. , Lindsay-Smith , J.R. , Taylor , R.I. and Chung , S. 2006 Extraction and tribological investigation of top piston ring zone oil from a gasoline engine Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 220 3 171 180
- Frottier , V. , Heywood , J. , and Hochgreb , S. Measurement of Gasoline Absorption into Engine Lubricating Oil SAE Technical Paper 961229 1996 10.4271/961229
- 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
- Qi , Y. , Xu , Y. , Wang , Z. , and Wang , J. The Effect of Oil Intrusion on Super Knock in Gasoline Engine SAE Technical Paper 2014-01-1224 2014 10.4271/2014-01-1224
- 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 1 8 2014 10.4271/2014-01-1219
- Daubert , T. E. , and Danner R. P. API technical data book-petroleum refining American Petroleum Institute (API) Washington DC 1997
- 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 2 379 389 2014 10.4271/2014-01-1226