This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Exhaust Purification With Small 2-Stroke Engines - A Challenge for Catalytic Systems
Annotation ability available
Sector:
Language:
English
Abstract
Two-stroke engines used in many different applications show comparatively high exhaust emissions, especially in hydrocarbons. In some countries they contribute considerably to the total HC emissions. Test methods and regulations to reduce these emissions have been discussed by European institutions for two-wheeled vehicles with small engines. They are shortly outlined.
Systematic investigations of emission patterns for HC, CO, NOx and O2, and temperature distributions over families of torque curves for a 50 cc. engine are presented.
The use of small, low cost catalytic systems to reduce these emissions is tested on stationary engines (conversions as function of engine modes) and on the roller dynamometer (emissions during the applicable ECE cycle) using commercial fuel (0.15 g Pb/l). The overall efficiency is mainly determined by oxygen concentrations and temperature.
Recommended Content
Citation
Koberstein, E. and Pletka, H., "Exhaust Purification With Small 2-Stroke Engines - A Challenge for Catalytic Systems," SAE Technical Paper 820279, 1982, https://doi.org/10.4271/820279.Also In
References
- Bruner G. “Die Belastung der Umwelt durch die Schadstoffemission von Motorfahrrädern in Österreich.” Bundesministerium für Bauten und Technik 107 1979
- Koberstein E. Pletka H. D. Völker H. SAE Paper 800394 1980
- Gerstl F. Fortschritt-Berichte der VDI Zeitschriften 6 68 1980 8
- Bolsmans B. Rijkeboer R. “Test cycles for mopeds.” Report 03-5-19002 from instituut voor wegtransportmiddelen TNO/Netherlands July 1975
- ISO/TC 22/SC 23/WG 1 - 35E “Measurement Method of Gaseous Pollutants Emitted by Mopeds Equipped with a Controlled Ignition Engine.” Pisa March 1976
- GRPA/TRANS/SC1/WP29/R. 151 Draft Regulation: “Uniform Provisions Concerning the Approval of Mopeds Equipped with a Positive - Ignition Engine with Regard to the Emission of Gaseous Pollutants by the Engine.” April 11 1978
- USA Federal Register 37 221
- Weigert W. Koberstein E. Lakatos E. Chem. Zeitung 97 1973 467 478