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Interlaboratory Cross-Check of Heavy-Duty Vehicle Chassis Dynamometers
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 21, 2002 by SAE International in United States
Annotation ability available
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.
|Technical Paper||Advanced Heavy Truck Frame Design and Opportunities for Fuel System Impact Protection|
|Ground Vehicle Standard||Compliance|
- 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.
CitationTraver, 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.
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- 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