This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Proposed Laboratory Methods for Predicting the Low-Temperature Pumpability Properties of Crankcase Oils
Annotation ability available
Sector:
Language:
English
Abstract
The inability of certain crankcase oils to flow and lubricate an engine at low temperature and the lack of a suitable bench test to predict this characteristic are of current concern to engine builders and oil formulators.
Two critical areas of oil flow at very low temperatures have been recognized by SAE and ASTM subcommittees. These are: the ability of an oil to flow to the oil screen of an engine fast enough to prevent “air binding,” and its ability to be drawn through the oil screen and pump inlet tubing without causing “pump cavitation.” The interrelation between these two factors is discussed and some engine pumpability data are presented which illustrate how one of these factors may affect the other.
Descriptions of four new bench tests are presented along with data to show their ability to predict the low-temperature pumpability properties of crankcase oils.
Recommended Content
| Technical Paper | A New Two-Piece Oil Control Ring with Enhanced Conformability |
| Technical Paper | A Comprehensive Piston Skirt Lubrication Model Using a Mass Conserving EHL Algorithm |
Authors
Topic
Citation
Stewart, R. and Smith, M., "Proposed Laboratory Methods for Predicting the Low-Temperature Pumpability Properties of Crankcase Oils," SAE Technical Paper 730479, 1973, https://doi.org/10.4271/730479.Also In
References
- Boone E. F. Crouse W. W. McLaughlin J. J. “Low-Temperature Fluidity of Multigrade Motor Oils.” Paper 710140 SAE Automotive Engineering Congress Detroit January 1971
- Letter from Wildrick Hart, Chairman of SAE Fuels and Lubricants Technical Committee, Subcommittee 2 on Engine Oils, to W. A. Wright, Chairman ASTM R&D Division VII of Committee D-2 on Petroleum Products and Lubricants February 5 1971
- Stewart R. M. Spohn C. R. “Some Factors Affecting the Cold Pumpability of Crankcase Oils.” SAE Transactions 81 1972 paper 720150
- Moyer R. G. “Low Temperature Pumpability of Oils.” Journal of American Society of Lubrication Engineers April 1962 165 168
- Smith, M. F. Jr. Graham J. P. “Pumpability of Multigrade Engine Oils at Low Temperature.” SAE Transactions 80 1971 paper 710139
- Murphy C. K. Green W. A. paper 710139 , SAE Transactions 80 1971
- Report of SAE Low Temperature Fluidity Task Force October 19 1972
- Selby T. W. “Viscosity and the Cranking Resistance of Engines at Low Temperatures.” Sixth World Petroleum Congress Proceedings, Section VI Frankfort June 1963 241 258
- Wright W. A. paper 720150 , SAE Transactions 81 1972
- “Evaluation of Laboratory Viscometers for Predicting Cranking Characteristics of Engine Oils at 0° F and -20° F.” CRC Report No. 409 April 1968
- Smith, M. F. Jr. “Effects of Base Stock and Additive Components on the Viscosity of Crankcase Oils at 0° F,” SAE Transactions 77 1968 paper 680068