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The Development and Application of 2-Stroke Catalysts for 2-Wheelers in Europe and Asia.
Technical Paper
2001-01-1821
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The exhaust gas mixture of a carburettored 2-stroke engine requires specially designed catalyst formulations if optimum pollutant conversions, durability and cost requirements are to be realised. Formulation improvements which increase the conversion of carbon monoxide (CO) allow manufacturers to tune their vehicles richer to give more power, improve rideability and promote longer engine life. In order to design catalyst formulations which facilitate engine tuning whilst still meeting legislative emissions targets, a study was performed on the effects of platinum group metal (PGM) combinations and advanced washcoat materials on CO performance. The effect of PGM and washcoat materials on fresh and aged CO conversion were assessed on vehicles representative of the European, Chinese and Indian markets. A road-correlated bench engine ageing cycle was used to simulate 30,000 km road ageing. Through the development of advanced washcoat materials and their targeted interactions with PGM, special high performance catalysts were formulated that gave enhanced CO conversion under two-stroke exhaust conditions.
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Citation
Coultas, D., Twigg, M., O'Sullivan, R., and Collins, N., "The Development and Application of 2-Stroke Catalysts for 2-Wheelers in Europe and Asia.," SAE Technical Paper 2001-01-1821, 2001, https://doi.org/10.4271/2001-01-1821.Also In
References
- Patterson M. J. Angrove D. E. Cant N. W. Applied Catalysis B: Environmental 26 2000 47 57
- Prigent M. Castagna F. Durand D. “Exhaust Catalyst Selection for Small Two-Stroke Engines” SAE paper 951765
- Palke D. R. Tyo M. A. “The Catalytic Reduction of Hydrocarbons and CO in Small Two-Stroke Engine Powered Vehicle Exhaust Streams” SAE paper 972142
- O'Sullivan R. D. “Two-Stroke Exhaust Catalyst Durability on an Indian 2-Wheeler and Comparison with Catalysts Aged on an Engine Bench” SAE paper 2001-01-0003