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Predicting Low Temperature Engine Oil Pumpability with the Mini-Rotary Viscometer
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Abstract
A new viscometer, the Mini-Rotary Viscometer (MRV), has been demonstrated to predict the low temperature pumpability performance of engine oils. This bench test method was developed at the request of SAE Fuels and Lubricants Subcommittee 2 and culminates a two-part ASTM Program to (1) define pumpability characteristics of reference oils in engines and (2) assess/develop bench test methods for predicting low temperature engine pumpability. The MRV is a low shear stress/shear rate viscometer that correlates either with an “average” engine or an individual engine, depending upon the critical rheological requirements of the particular engine or engines, and attains its high degree of correlation by predicting either of two failure modes-air binding of the pump or insufficient oil flow rate to the oil pump inlet. Thus, the MRV complements the Cold Cranking Simulator, a high shear stress device, in defining the low temperature behavior of straight-grade and multigrade engine oils.
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Citation
Shaub, H., Smith, M., and Murphy, C., "Predicting Low Temperature Engine Oil Pumpability with the Mini-Rotary Viscometer," SAE Technical Paper 790732, 1979, https://doi.org/10.4271/790732.Also In
References
- Moyer R. G. “Low Temperature Pumpability of Oils.” Journal of American Society of Lubrication Engineers April 1962 165 168
- Selby T. W. “Viscosity and the Cranking Resistance of Engines at Low Temperatures.” Sixth World Petroleum Congress Proceedings Section VI, Frankfurt June 1963 241 258
- Smith, M. F. Jr. Graham J. P. “Pumpability of Multigrade Engine Oils at Low Temperature.” SAE Transactions 80 1971 paper 710139
- 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
- Wildrick Hart Wright W. A. February 5 1971
- Stewart R. M. Spohn C. R. “Some Factors Affecting the Cold Pumpability of Crankcase Oils.” SAE Transactions 81 1972 paper 720150
- McMillan M. L. Murphy C. K. “The Relationship of Low-Temperature Rheology to Engine Oil Pumpability.” SAE SP-382 “Viscometry and Its Application to Automotive Lubricants.” Society of Automotive Engineers, Inc. 1973 paper 730487
- Stewart R. M. Smith, M. F. Jr. “Proposed Laboratory Methods for Predicting the Low-Temperature Pumpability Properties of Crankcase Oils.” SAE SP-382 “Viscometry and Its Application to Automotive Lubricants.” Society of Automotive Engineers, Inc. 1973 paper 730479
- Nolf A. R. “Engine Oil Pumpability and Related Properties.” SAE SP-382 “Viscometry and Its Application to Automotive Lubricants.” Society of Automotive Engineers, Inc. 1973 paper 730480
- Tao F. F. Waddey W. E. “Low-Shear Viscometry and Cold Flow Mechanism-Engine Oils.” SAE SP-382 “Viscometry and Its Application to Automotive Lubricants.” Society of Automotive Engineers, Inc. 1973 paper 740381
- “Low-Temperature Pumpability Characteristics of Engine Oils in Full-Scale Engines,” ASTM 1975
- McMillan M. L. Stewart R. M. Smith, M. F. Jr. Rein S. W. “Low-Temperature Engine Oil Pumpability in Full-Scale Engines,” SAE Paper No. 750691 June 3-5 1975
- Spohn C. R. Stewart R. M. “Cold Pumpability Characteristics of Engine Oils Predicted by a Bench Test.” Paper 740541 SAE Fleet Week Meeting Chicago June 1974
- Philippoff W. “On Normal Stress, Flow Curves, Flow Birefringence of Polyisobutylene Solution,” Trans. Soc. Rheology 1 95 107 1957
- “Determination of Low Temperature Cranking Characteristics of Engine Oils at -20°F Using CRC L-49-663 Research Test Technique” CRC Report No. 405 Jan. 1967
- “Evaluation of Laboratory Viscometers for Predicting Cranking Characteristics of Engine Oils at 0°F and -20°F” CRC Report No. 409 April 1968
- Gyer J. F. ASTM R&D DVII and SAE F&L-2 on MRV for Engine Oil Pumpability Feb. 21 1979
- McMillan M. L. Gyer J. F. March 9 1979
- Pecora R. C. ASTM R&D DVIIC on Orifice Viscometer December 1 1975
- Alexander D. L. Rein S. W. “Viscometer for Predicting Low Temperature Pumpability of Engine Oils” SAE Paper 770632 June 1977