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Predictive Break-In and Rapid Efficiency Characterization of Beam Axles
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Given continued industry focus on reducing parasitic losses, the ability to accurately measure the magnitude of losses on all driveline components is required. A standardized test procedure enables manufacturers and suppliers to measure component losses consistently, in addition to offering a reliable process to assess enablers for efficiency improvements. This paper reviews the development of SAE draft standard J3218, which is a comprehensive test procedure to break-in and characterize the efficiency of beam axles. Focus areas of the study included ensuring the axle’s efficiency does not change as it is being characterized, building a detailed map of efficiency at a wide range of operating points, and minimizing test time. The resulting break-in procedure uses an asymptotic regression approach to predict fully broken in efficiency of the axle and determine how much the efficiency of the axle changes during the characterization phase. This paper outlines several temperature control methods and approaches to efficiency characterization. The paper goes on to define the proposed break-in and efficiency characterization procedures including results from characterization of several production axles.
CitationGuarino, W., Bias, P., Schumaier, T., Wei, S. et al., "Predictive Break-In and Rapid Efficiency Characterization of Beam Axles," SAE Technical Paper 2020-01-1413, 2020.
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