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Evaluation of Improved Bag Mini-Diluter System for Low Level Emissions Measurements
Technical Paper
2002-01-0047
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
General Motors Corporation has installed its first production Bag Mini-Diluter Emission Test Site. This site is capable of conducting chassis dynamometer tests in either traditional CFV mode, or BMD mode, and a combination mode in which both technologies sample simultaneously. This paper discusses ambient interferent (Hydrocarbon and humidity) contamination issues which impact data resolution and measurement accuracy as emission standards are lowered. Solutions are recommended which compensate for these effects. This document examines new technologies required for accurate BMD measurements, and presents data obtained from running the site in the dual sampling mode utilizing a four-cylinder PZEV vehicle.
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Citation
Luzenski, D., Bedsole, K., Hill, J., Nagy, D. et al., "Evaluation of Improved Bag Mini-Diluter System for Low Level Emissions Measurements," SAE Technical Paper 2002-01-0047, 2002, https://doi.org/10.4271/2002-01-0047.Also In
References
- Subpart B-Emission Regulations for 1977 and Later Model Year New Light-Duty Vehicles and New Light-Duty Trucks; Test Procedures
- Sikvis William M. et al. A CFV Type Mini-dilution Sampling System for Vehicle Exhaust Emissions Measurement SAE 1999-01-0151
- Gunther Mark et al. Improved Bag Mini-Diluter Sampling System for Ultra-Low Level Vehicle Exhaust Emissions SAE 2000-01-0792
- Wright John D. The Performance of Transit Time Flowmeters in Heated Gas Mixtures, FEDSM98-5290 1998 ASME Fluids Engineering Division Summer Meeting
- Nagy Donald B. et al. Evaluation of the Bag Mini-Diluter and Direct Vehicle Exhaust Volume System for Low Level Emissions Measurement SAE 2000-01-0793
- ERC Technical Report “The Bag Mini-Diluter Alternative to CVS Sampling” May 1 2001
- Gunther Mark et al. Improved Bag Mini-Diluter Sampling System for Ultra-Low Level Vehicle Exhaust Emissions SAE 2000-01-0792
- Nagy Donald B. et al. Evaluation of the Bag Mini-Diluter and Direct Vehicle Exhaust Volume System for Low Level Emissions Measurement SAE 2000-01-0793