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Evaluation of Laboratory Viscometers for Predicting the Cranking Characteristics of Engine Oils at 0 F and −20 F - (Report of the Group on Relationship Between Oil Characteristics and Engine Cranking of the Motor Vehicle Fuel, Lubricant, and Equipment Research Committee of the Coordinating Research Council, Inc.)
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Abstract
A study of the correlation between engine cranking data and viscometric data at 0 F and -20 F has been made by the Coordinating Research Council. Two laboratory viscometers, the Cold-Cranking Simulator (CCS) and the Reciprocating Vijcometer (RV), have been found suitable for predicting the engine cranking performance of oils at 0 F and -20 F. Data from ASTM cooperative programs with these two instrument types agreed and both showed good correlation with data from CRC engine cranking programs conducted at 0 F and -20 F. The CCS had better repeatability than the RV at 0 F, but both viscometer types were equivalent in this respect at -20 F. Although the cone-plate viscometers gave the best correlation with engine cranking data at 0 F, they failed to provide the desired degree of precision in a second ASTM program at this same temperature; hence, no cooperative data were obtained at -20 F. The CCS and RV instruments, as the engines, showed that low-temperature viscosity should be determined at the temperature of interest and not inferred from measurement at some other temperature.
Authors
Citation
Meyer, W., Selby, T., and Stringer, H., "Evaluation of Laboratory Viscometers for Predicting the Cranking Characteristics of Engine Oils at 0 F and −20 F - (Report of the Group on Relationship Between Oil Characteristics and Engine Cranking of the Motor Vehicle Fuel, Lubricant, and Equipment Research Committee of the Coordinating Research Council, Inc.)," SAE Technical Paper 680065, 1968, https://doi.org/10.4271/680065.Also In
References
- “Development of Research Technique for Determining the Low-Temperature Cranking Characteristics of Engine Oils.” Coordinating Research Council, Report No. 374 January 1964
- Lowther H. V. Meyer W. A. P. Selby T. W. Vick G. K. “Development of Research Technique for Determining the Low-Temperature Cranking Characteristics of Engine Oils.” Paper 805A SAE Automotive Engineering Congress Detroit January 1964
- “Determination of Low-Temperature Cranking Characteristics of Engine Oils at -20 F Using CRC L-49 Research Technique.” Coordinating Research Council, Report No. 405 May 1967
- “Prediction of Low-Temperature Cranking Characteristics of Engine Oils by Use of Laboratory Viscometers.” Coordinating Research Council, Report No. 381 March 1965
- Vick G. K. Meyer W. A. P. Selby T. W. “Prediction of the Low Temperature Cranking Characteristics of Engine Oils by Use of Laboratory Viscometers.” 1966 Paper 650441
- Stewart R. M. Lion W. D. Meyer W. A. P. “Reciprocating Viscometer for Predicting the Low-Temperature Cranking Characteristics of Engine Oils.” 1966 Paper 650443
- Kim D. S. discussion of Stewart, Lion, and Meyer paper 1966 Paper 650443
- “Proposed Method of Test for Apparent Viscosity of Motor Oils at Low Temperatures Using Cone-Plate Viscometers …” ASTM Standards, Part 17 January 1967 1045 1067
- “Evaluation of Laboratory Viscometers for Predicting the Cranking Characteristics of Engine Oils at 0 F and -20 F.” Coordinating Research Council, Report No. 409 December 1967
- Meyer W. A. P. Stewart R. M. “Development of an Improved Reciprocating Viscometer for Predicting the Low-Temperature Cranking Characteristics of Engine Oils.” Paper 680066 SAE Automotive Engineering Congress Detroit January 1968
- Cox D. B. Manning R. E. Kim D. S. “The Cold Cranking Simulator Method for Viscosity of Motor Oils at Low Temperature.” Paper 680067 SAE Automotive Engineering Congress Detroit January 1968
- Cox D. B. Stringer H. R. June 22 1967 June 28 1967
- Meyer W. A. P. Selby T. W. June 23 1967 June 28 1967
- Extrapolated Oil Viscosities SAE J305a SAE Handbook 1967 317
- Cox D. B. May 6 1966