Copolymer materials have been used for the collection of vehicle exhaust gas samples since the inception of regulatory standards. Some of these copolymers contain N,N-dimethylacetamide (DMA), which is added to improve the physical properties of the copolymer and eliminate manufacturing problems. DMA is highly soluble in water, and in effect is rinsed from the emission bag surface by humid exhaust gas samples. This study shows that DMA can thus incorrectly add to test vehicle overall hydrocarbon emissions. The DMA contribution can be significant for lower level emission vehicles. This study introduces a new bag material, KYNAR, which significantly reduces this interference.
Evaluation of new bag sampling materials for low level emissions measurements
Bewertung neuer Beutelprobenahmestoffe für Messungen von Niedrigniveauemissionen
2002
7 Seiten, 6 Bilder, 2 Tabellen
Conference paper
English
Evaluation of New Bag Sampling Materials for Low Level Emissions Measurements
SAE Technical Papers | 2002
|Evaluation of new bag sampling materials for low level emissions measurements
Automotive engineering | 2002
|Evaluation of New Bag Sampling Materials for Low Level Emissions Measurements
British Library Conference Proceedings | 2002
|Simulation of low level vehicle exhaust emissions for evaluation of sampling and analytical systems
Automotive engineering | 2001
|Simulation of Low Level Vehicle Exhaust Emissions for Evaluation of Sampling and Analytical Systems
SAE Technical Papers | 2001
|