Browse Publications Technical Papers 2002-01-0051
2002-03-04

Evaluation of New Bag Sampling Materials for Low Level Emissions Measurements 2002-01-0051

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.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

An Investigation of Sample Bag Hydrocarbon Emissions and Carbon Dioxide Permeation Properties

2004-01-0593

View Details

TECHNICAL PAPER

Evaluation of Fluorocarbon Polymer Bag Material for Near Zero Exhaust Emission Measurement

2001-01-3535

View Details

TECHNICAL PAPER

Improved Bag Mini-Diluter Sampling System for Ultra-Low Level Vehicle Exhaust Emissions

2000-01-0792

View Details

X