Turbulent Flow Metal Substrates: A Way to Address Cold Start CO Emissions and to Optimize Catalyst Loading

2006-01-1523

04/03/2006

Event
SAE 2006 World Congress & Exhibition
Authors Abstract
Content
Modern Diesel Engines equipped with Common-Rail Direct Injection and EGR are characterized by an increasingly high combustion efficiency. Consequently the exhaust gas temperature, especially during a cold start, is significantly reduced compared to typical values measured in previous engine generations. This leads to a potential problem with CO emission limit compliance. The present paper deals with an experimental investigation of turbulent-flow metal substrates, carried out on a vehicle roller bench using a production 1.3 Liter diesel engine equipped passenger car. The tested metal supported catalysts proved to yield extremely high conversion rates both during cold start and in warm operation phase. The improved mass transfer efficiency of the advanced metal substrates is related on one hand to the optimized coating technology and, on the other hand, to the enhanced flow performance in the single converter channels which is caused by structured metal foils. Additionally different cost saving scenarios have been analyzed by means of both catalyst volume reduction and decreased PGM loading.
Meta TagsDetails
DOI
https://doi.org/10.4271/2006-01-1523
Pages
9
Citation
Presti, M., Pace, L., Carelli, G., and Spurk, P., "Turbulent Flow Metal Substrates: A Way to Address Cold Start CO Emissions and to Optimize Catalyst Loading," SAE Technical Paper 2006-01-1523, 2006, https://doi.org/10.4271/2006-01-1523.
Additional Details
Publisher
Published
Apr 3, 2006
Product Code
2006-01-1523
Content Type
Technical Paper
Language
English