This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Influence of the Viscosity of Polymer Containing Engine Oils on the Startability of Engines
Annotation ability available
Sector:
Language:
English
Abstract
Investigations using 4 monograde and 3 multigrade engine oils were performed by cold cranking an automotive engine to determine whether or not there is friction reduction due to the pseudoplastic behaviour of the multigrade engine oils. A comparison of the oils using viscometers indicated the viscometers ability to predict the “engine viscosities” over a temperature and shear rate range. Furthermore, this work determined whether results of viscometric measurements could be confirmed with the test engine. An answer was found to the question of the amount of hydrodynamic friction encountered when starting an automotive engine at low temperatures.
Recommended Content
| Technical Paper | Frequency Effects on High-Density Polyethylene Failure under Cyclic Loading |
| Technical Paper | Insulated Iron Powders for Automotive Applications |
| Ground Vehicle Standard | Recommended Testing Methods for Physical Protection of Wiring Harnesses |
Citation
von Petery, C., Kruse, H., and Bartz, W., "Influence of the Viscosity of Polymer Containing Engine Oils on the Startability of Engines," SAE Technical Paper 780370, 1978, https://doi.org/10.4271/780370.Also In
References
- Hamm A.A. “Cold Facts on Cold Starting” SAE-Paper 885 A 1964
- Lilie R.H. “Requirements to the Lubricant of todays Passenger Car Engines” 71 1969 10 367 370
- Bartz W.J. “Flow Properties of Multigrade Engine Oils at Low and High Temperatures” 19 1974 1 35
- Okrent E.H. “The Effect of Lubricant Viscosity and Composition on Engine Friction and Bearing Wear” ASLE Transactions 4 1961 97 108 257 262
- Pike W.C. Haisell O. “An Experimental Analysis of the Cold Cranking Resistance of an Automotive Engine” Proc.Instn.Mech.Engrs. 181 1967 3 177 183
- Bartz W.J. Nemes N. “Flow Properties and Thickening Effect of Different Viscosity Index Improvers Used in Multigrade Engine Oils” Lubrication Engineering 33 1977 20 32
- Kruse H. “Friction Analysis at Cold Starting an Internal Combustion Engine” Doctor Thesis Technical University Hannover 1964 27 1966 9 365 374
- Petery C.v. “Measurement of the Cold Starting Friction of Monograde and Multigrade Engine Oils in an Internal Combustion Engine” Doctor Thesis Technical University Hannover 1976 23 1976 156 162 43 1977 3 91 96