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Development of Oxidation Catalyst for Diesel Engine
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English
Abstract
In developing an oxidation catalyst for reducing diesel particulates, it is necessary to balance two conflicting characteristics. One is high oxidizing activity so that the catalyst can reduce the Soluble Organic Fraction (SOF) efficiency even at low exhaust temperatures. The other is the suppression of sulphate formation at high exhaust temperatures.
First it was studied that active metals and coating materials are given effects on the reduction of SOF, the formulation of sulphate and durability, by using catalysts equivalent in composition to the oxidation catalyst for gasoline-engines.
Based on these findings, a two-stage catalyst wasdeveloped. It satisfies the two characteristics at a comparatively high levelby slecting materials and optimizing the catalyst composition.
Authors
Citation
Ogura, Y., Kibe, K., Kaneko, S., Ito, Y. et al., "Development of Oxidation Catalyst for Diesel Engine," SAE Technical Paper 940240, 1994, https://doi.org/10.4271/940240.Also In
References
- Hunter G. Scholl J. Hibbler F. Bagley S. Leddy D. Abata D. Johnson J. “The Effects of Fuels on Diesel Oxidation Catalyst” SAE Paper 811192
- Pattas K.N. Kyriakis N.A. Samaras Z.C. Aidarinis J.K. “Comparative Measurement of the Effciency of catalytic After-Burning Devices on a Heavy-Duty Diesel Engine” SAE 840171
- Horluchl Makoto Salto Koichi Ishihara Sholchi “The Effect of Flow-through Type Oxida- tion Catalysts on the Particurate Reduction of 1990's Diesel Engines” SAE 900600
- Aral Minoru “SOF Reduction and Sulfate Formation Characteristics by Diesel Catalyst SAE 910328