Compact, High Efficiency, Catalytic Muffler for Utility Engines

971133

02/24/1997

Event
SAE International Congress and Exposition
Authors Abstract
Content
This paper reports test results of a compact, high pollutant conversion efficiency, catalytic muffler developed for utility engines (<19kW/25hp). Tests were conducted in-house, and at an independent laboratory under EPA supervision and funding, using a four-stroke engine generator set. The specific HC, CO and NOx emissions were reduced by 98%, 97%, and 19%, respectively. This level of reduction is thought to be sufficient for reducing such emissions from utility engines to the level of future standards such as 1999 CARB. A total of 200 hours of performance and limited durability testing were accumulated on the catalytic muffler. The prototype demonstrated successful operation by entraining fresh air and mixing with exhaust gas, converting pollutants, maintaining acceptable skin and exhaust gas temperatures, and muffling noise.
Meta TagsDetails
DOI
https://doi.org/10.4271/971133
Pages
10
Citation
Etemad, S., Sun, R., Roychoudhury, S., and Pfefferle, W., "Compact, High Efficiency, Catalytic Muffler for Utility Engines," SAE Technical Paper 971133, 1997, https://doi.org/10.4271/971133.
Additional Details
Publisher
Published
Feb 24, 1997
Product Code
971133
Content Type
Technical Paper
Language
English