This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Humidity Effects on a Carbon Hydrocarbon Adsorber
Technical Paper
2009-01-0873
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Because combustion engine equipped vehicles must conform to stringent hydrocarbon (HC) emission requirements, many of them on the road today are equipped with an engine air intake system that utilizes a hydrocarbon adsorber. Also known as HC traps, these devices capture environmentally dangerous gasoline vapors before they can enter the atmosphere. A majority of these adsorbers use activated carbon as it is cost effective and has excellent adsorption characteristics.
Many of the procedures for evaluating the adsorbtive performance of these emissions devices use mass gain as the measurand. It is well known that activated carbon also has an affinity for water vapor; therefore it is useful to understand how well humidity must be controlled in a laboratory environment. This paper outlines investigations that were conducted to study how relative humidity levels affect an activated carbon hydrocarbon adsorber.
Recommended Content
Authors
Citation
Flora, S., Schaffer, S., and Arruda, T., "Humidity Effects on a Carbon Hydrocarbon Adsorber," SAE Technical Paper 2009-01-0873, 2009, https://doi.org/10.4271/2009-01-0873.Also In
References
- Takanobu, Kawano et al. “A Measuring Technology to Analyze HC Concentration in the Air Intake System While the Engine is in Operation” SAE Technical Paper 2004-01-0142
- Schaffer, Scott et al. “Design Considerations & Characterization Test Methods for Activated Carbon Foam Hydrocarbon Traps in Automotive Air Induction Systems
- Consumer Center FAQ [internet] ASHREA American Society of Heating, Refrigeration & Air-Conditioning Engineers available from http://www.ashrae.org/education/page/1481