This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Design Considerations in Formulating Gasoline Engine Lubricants for Improving Engine Fuel Economy and Wear Resistance Part I: Base Oils and Additives
Technical Paper
2007-01-4143
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
It is generally accepted that significant gains in fuel economy can be accomplished by reducing friction between the moving surfaces in key engine components (e.g. valvetrain, piston, crankshaft). This paper provides an overview of how specific tribological/rheological properties (e.g. viscosity, volatility, friction coefficient, film thickness, wear volume) can be considered in the design of fuel efficient crankcase engine lubricants that promote high wear resistance. Here, an example in how base stock, viscosity modifier (VM) and friction modifier (FM) can impact the surface friction is given. Friction and wear measurements from bench level lubrication characterization test methods mainly, high frequency reciprocating rig (HFRR) and mini-traction machine (MTM), are presented.
Recommended Content
Authors
Topic
Citation
Phillips, C., McQueen, J., Gao, H., Stockwell, R. et al., "Design Considerations in Formulating Gasoline Engine Lubricants for Improving Engine Fuel Economy and Wear Resistance Part I: Base Oils and Additives," SAE Technical Paper 2007-01-4143, 2007, https://doi.org/10.4271/2007-01-4143.Also In
References
- Wang, Y. Introduction to Engine Valvetrains SAE International 2007
- Stone, R. Introduction to Internal Combustion Engines 3rd ed. SAE International 1999
- Pirro, D. M. Wessol, A. A. Lubrication Fundamentals 2nd ed. Marcel Dekker, Inc. NY 2001
- Tung, S. C. Gao, H. “Tribological Characteristics and Surface Interaction Between Piston Ring Coatings and a Blend of Energy-Conserving Oils and Ethanol Fuels” Wear 255 1276 1285 2003
- Bayer, R. Wear Analysis for Engineers HNB Publishing, Inc. NY 2002 38
- Crouse, W. Anglin, D. Automotive Engines 8th ed. McGraw-Hill, Inc. NY 1995
- Devlin, M. T. Lam, W. Y. McDonnell, T. F. “Critical Oil Physical Properties that Control the Fuel Economy Performance of General Motors Vehicles” SAE Technical Paper 982503 1998
- Clark S. L. Olree R. M. Lang P. Leverett C. Bowden D. H. “Development of the Sequence IIIG Engine Oil Certification Test,” SAE Technical Paper 2004-01-2987 2004
- Gao, H. Bjornen, K. Gangopadhyay, A. Jensen, R. “Oxidation and Antiwear Retention Capability of Low Phosphorus Engine Oils” SAE Technical Paper 2005-01-3822 2005
- Spikes, H. “The Thickness, Friction and Wear of Lubricant Films” SAE Powertrain and Fluids Conference 2005
- McMillan, M. L. “ILSAC GF-4 and Beyond” Detroit Advisory Panel (DAP) to the API Technology Forum 2002
- Ludema, K. C. Sneck, H. J. Vohr, J. H. “Elastohydrodynamic Lubrication” CRC Handbook of Lubrication: Theory and Practice of Tribology 2 Booser, E. R. ed. CRC Press, Inc. 43 69 73 1984
- “Surface Texture (Surface Roughness, Waviness, and Lay)” 2002
- Cohen, D. “Surface Texture Effects on Dry Friction” STLE-Detroit Section, Automotive Tribology and Lubrication Seminar 2007
- Spikes, H. “The History and Mechanisms of ZDDP” Tribology Letters 17 3 469 489 2004
- Yamaguchi E.S. Roby S.H. Yeh S.W. “Time dependent film formationfrom ZnDTPs and nonphosphorous anti-wear agents” Tribology Transactions 48 57 68 2005
- Uy, D. Simko, S. J. O”Neill, A. E. Jensen, R. K. Gangopadhyay, A. Carter, R.O. “Raman Characterization of Anti-Wear Films Formed from Fresh and Aged Engine Oils” SAE Technical Paper 2006-01-1099 2006
- Tanaka, H. Nagashima, T. Sato, T. Kawauchi, S. “The Effect of 0W-20 Low Viscosity Engine Oil on Fuel Economy” SAE Technical Paper 1999-01-3468 1999
- Jetter, J. “Honda's Perspective on Lubricant Trends” Detroit Advisory Panel (DAP) to the API Technology Forum 2002
- Morina, Al Neville, A. Priest, M. Green, J. H. “ZDDP and MoDTC Interactions in Boundary Lubrication - The Effect of Temperature and ZDDP/MoDTC Ratio” Tribology International 39 1545 1557 2006
- Stipanovic, A. J. Schoonmaker, J. P. “The Impact of Organomolybdenum Compounds on the Frictional Characteristics of Crankcase Engine Oils” SAE Technical Paper 932779 1993
- McQueen J.S. Gao H. Black E.D. Gangopadhyay A.K. Jensen R.K. “Friction and wear of tribofilms formed by zinc dialkyldithiophosphate anti-wear additive in low viscosity engine oils” Tribology International 38 289 297 2005