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Interlaboratory Cross-Check of Heavy-Duty Vehicle Chassis Dynamometers
Technical Paper
2002-01-2879
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
Six laboratories capable of chassis-testing heavy-duty vehicles participated in a crosscheck program designed to compare emissions results from a Ford L-9000. The single-axle vehicle was shipped to each laboratory and tested through a series of UDDS and steady-state cycles. The resulting data were compared statistically using reproducibility and repeatability analyses. Although one lab produced some results that significantly differed from the other five, the remaining labs produced comparable results. TPM, CO and THC were the most variable while NOX and CO2 were most stable. Lab differences included atmospheric and environmental conditions, road-load curve application and drivers. Comparison of steady state and transient tests suggest that driver variability is not a major factor.
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Authors
- Brent K. Bailey - Coordinating Research Council, Inc.
- Hector Maldonado - California Air Resources Board
- Michael L. Traver - Automotive Testing Laboratories, Inc.
- Christopher J. Tennant - Automotive Testing Laboratories, Inc.
- Thomas I. McDaniel - Automotive Testing Laboratories, Inc.
- Steven S. McConnell - Automotive Testing Laboratories, Inc.
Citation
Traver, M., Tennant, C., McDaniel, T., McConnell, S. et al., "Interlaboratory Cross-Check of Heavy-Duty Vehicle Chassis Dynamometers," SAE Technical Paper 2002-01-2879, 2002, https://doi.org/10.4271/2002-01-2879.Also In
References
- Clark Nigel N Gautam Mridul Rapp Byron L. Lyons Donald Graboski Michael S. McCormick Robert L. Alleman Teresa L. Norton Paul “Diesel and CNG Transit Bus Emissions Characterization By Two Chassis Dynamometer Laboratories: Results and Issues” SAE Paper # 1999-01-1469 Warrendale, PA 1999
- McCormick Robert L. Ryan Lisa B.A. Daniels Teresa L. Yanowitz Janet Graboski Michael S. “Comparison of Chassis Dynamometer In-Use Emissions with Engine Dynamometer FTP Emissions for Three Heavy-Duty Diesel Vehicles” SAE paper # 982653 Warrendale, PA 1998
- ASTM E691-99 “Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method” ASTM West Conshohocken, PA 1999
- Yanowitz, J. McCormick, R. Graboski, M. “In-Use Emissions from Heavy-Duty Diesel Vehicles” Environmental Science and Technology 34 5 729 2000