This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
An Investigation of Sample Bag Hydrocarbon Emissions and Carbon Dioxide Permeation Properties
Technical Paper
2004-01-0593
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The equipment for collecting dilute exhaust samples involves the use of bag materials (i.e., Tedlar®) that emit hydrocarbons that contaminate samples. This study identifies a list of materials and treatments to produce bags that reduce contamination. Based on the average emission rates, baked Tedlar®, Capran® treated with alumina deposition, supercritical CO2 extracted Kynar® and supercritical CO2 extracted Teflon NXT are capable of achieving the target hydrocarbon emission rate of less than 15 ppbC per 30 minutes. CO2 permeation tests were also performed. Tedlar, Capran, Kynar and Teflon NXT showed comparable average permeation rates. Based on the criteria of HC emission performance, changes in measured CO2 concentration, ease of sealing, and ease of surface treatment, none of the four materials could be distinguished from one another. Additional information from further testing would need to be added to the results of this study in order to choose a single optimum sample bag material for vehicle emission testing.
Recommended Content
| Technical Paper | Evaluation of New Bag Sampling Materials for Low Level Emissions Measurements |
| Technical Paper | A CFV Type Mini-dilution Sampling System for Vehicle Exhaust Emissions Measurement |
| Technical Paper | Inspection and Maintenance of Cars In Use |
Authors
Citation
Sherman, M., Huron, G., Whitney, K., and Hill, J., "An Investigation of Sample Bag Hydrocarbon Emissions and Carbon Dioxide Permeation Properties," SAE Technical Paper 2004-01-0593, 2004, https://doi.org/10.4271/2004-01-0593.Also In
References
- Montgomery, S. D. “Emissions Sampling Bag Permeation and Outgassing,” Jan. 19 1999
- Hansen, M. “Sampling Bag Outgassing Analysis,” July 6 1999
- Branson, D. T. “Properties and Testing Results of Proposed Bag Materials for Exhaust Testing,” Aug. 9 2000
- Sawano, M. et al. “A Study of Low-Emission Measurement Techniques,” Journal of the Society of Automotive Engineers of Japan, 9631010 1996
- Hill, J. et al. “Evaluation of New Bag Sampling Materials for Low Level Emissions Measurements,” SAE 2002-01-0051 2002
- Sun, E. et al. “Evaluation of Fluorocarbon Polymer Bag Material for Near Zero Exhaust Emission Measurements,” SAE 2001-01-3535 2001
- Sun E. “SwRI SAE Paper” 2003