Evaluation of the Bag Mini-Diluter and Direct Vehicle Exhaust Volume System for Low Level Emissions Measurement 2000-01-0793
With the adoption of the California Low-Emission Vehicle Regulations and the associated lower emission standards such as LEV (Low-Emission Vehicle in 1990), ULEV (Ultra-Low-Emission Vehicle), and LEV II (1998 with SULEV-Super Ultra Low Emission Vehicle), concerns were raised by emissions researchers over the accuracy and reliability of collecting and analyzing emissions measurements at such low levels. The primary concerns were water condensation, optimizing dilution ratios, and elimination of background contamination. These concerns prompted a multi-year research program looking at several new sampling techniques. This paper will describe the cooperative research conducted into one of these new technologies, namely the Bag Mini-Diluter (BMD) and Direct Vehicle Exhaust (DVE) Volume system.
Citation: Nagy, D., Loo, J., Tulpa, J., Schroeder, P. et al., "Evaluation of the Bag Mini-Diluter and Direct Vehicle Exhaust Volume System for Low Level Emissions Measurement," SAE Technical Paper 2000-01-0793, 2000, https://doi.org/10.4271/2000-01-0793. Download Citation
Donald B. Nagy, Jeffrey Loo, Jim Tulpa, Pat Schroeder, Rick Middleton, Craig Morgan
Powertrain Div., General Motors Corporation, DaimlerChrysler Corporation
SAE 2000 World Congress
Advanced Developments in Ultra-Clean Gasoline-Powered Vehicles-PT-104, Emission Measurement and Testing-SP-1503, SAE 2000 Transactions Journal of Fuels and Lubricants-V109-4