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Computer Data Acquisition With Statistical Processing in Dynamometer Testing of Fuel Efficient Engine Oils
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English
Abstract
Automated data acquisition and linear regression methods have enabled an analysis of test precision factors in measurements of brake specific fuel consumption for assessment of fuel efficient engine oils. Critical engine parameters were identified, controlled, and measured using a high resolution data acquisition system. With other critical parameters held within less than ±.03% of specified levels, air-fuel ratio was identified as the limiting factor in overall test error. A variety of experiments involving back-to-back tests (including engine mapping sequences) with the ASTM 20W-30 reference oil and calibration oils yielded overall test delta repeat errors between .19% and .56%.
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Heath, D. and DiFrancesco, N., "Computer Data Acquisition With Statistical Processing in Dynamometer Testing of Fuel Efficient Engine Oils," SAE Technical Paper 831739, 1983, https://doi.org/10.4271/831739.Also In
References
- “Proposed Method of Measuring Energy-Conserving Quality of Engine Oils in Vehicles,” ASTM D-2 Proposal P101
- “Proposed Classification of Energy-Conserving Engine Oils,” ASTM D-2 Proposal P102
- “ASTM Fuel-Efficient Engine Oils Task Force Report on the Pilot and Demonstration Programs” ASTM Research Report RR:D02-1163
- Koller R. D. Galluccio R. A. “Fuel Economy Testing, The Role of Statistics in Developing a Method,” presented at the Annual Meeting of American Society of Lubrication Engineers Pittsburgh, PA May 11 1981
- Caracciolo F. Spearot J. A. “Engine Oil. Additive Effects on the Deterioration of a Stoichiometric Emissions Control (C-4) System,” SAE Paper No. 790941
- Ribbens W. B. et. al. “Understanding Automative Electronics,” Texas Instruments Learning Center 1982