Study of Ceramic Catalyst Optimization for Emission Purification Efficiency

940784

03/01/1994

Event
International Congress & Exposition
Authors Abstract
Content
In this study, to satisfy increasingly strict emission regulations, the conversion efficiency of a 0.11 mm (4 mil) thin-wall catalyst is discussed. The effects of catalyst bulk density on reducing heat mass to improve catalyst emission conversion in the early cold transient mode (Bag 1 in the FTP-75 mode) is quantitatively discussed. To analyze the effects of low heat mass, catalyst's bed temperatures were measured. Effects of the geometric surface area (GSA) and volume of the catalyst were also analyzed.
An early feedback control system with an HEGO oxygen sensor and a secondary air injection control system with an original oxygen sensor were compared with an original control system on THC, CO, and NOx emission amounts.
Meta TagsDetails
DOI
https://doi.org/10.4271/940784
Pages
15
Citation
Machida, M., Yamada, T., and Makino, M., "Study of Ceramic Catalyst Optimization for Emission Purification Efficiency," SAE Technical Paper 940784, 1994, https://doi.org/10.4271/940784.
Additional Details
Publisher
Published
Mar 1, 1994
Product Code
940784
Content Type
Technical Paper
Language
English