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A 45% Engine Size Catalyst System for MDV2 ULEV Applications
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English
Abstract
A catalyst system, consisting of two different catalyst technologies within a single canister, was developed for MDV2 (Medium-Duty Vehicles, Class 2) to meet ULEV targets. The catalyst volume versus engine displacement is less than 50%. Three approaches taken: substrate study, PM loading study and new catalyst technology development are illustrated here. The most promising system features new catalyst technologies coated on high cell density substrates.
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Citation
Sung, S., Ober, R., Casper, R., and Miles, G., "A 45% Engine Size Catalyst System for MDV2 ULEV Applications," SAE Technical Paper 982553, 1998, https://doi.org/10.4271/982553.Also In
Taking Gasoline Vehicles Beyond Ulev: Catalyst System Approaches
Number: SP-1392; Published: 1998-10-19
Number: SP-1392; Published: 1998-10-19
References
- Sims G.S. Johri S. “Catalyst Performance Study Using Taguchi Methods” SAE Paper 881589 1988
- Smaling R.M. Sung S. Bartlett R. “Washcoat Technology and Precious Metal Loading Study Targeting the California LEV MDV2 Standard” SAE Paper 961904 1996
- Hu Z. Heck R.M. “High Temperature Ultra Stable Close-Coupled Catalysts” SAE Paper 950254 1995
- Chen S.F. et. al. “The Development of a Close Coupled Plus Underfloor Catalyst for a ULEV Application” SAE Paper 960796 1996