Emission Control Systems for Two Stroke Engines - A Challenge for Catalysis=

Paper #:
  • 982710

Published:
  • 1998-10-19
Citation:
Bickle, G., Yoshikawa, T., Schäfer-Sindlinger, A., Domesle, R. et al., "Emission Control Systems for Two Stroke Engines - A Challenge for Catalysis=," SAE Technical Paper 982710, 1998, https://doi.org/10.4271/982710.
Pages:
13
Abstract:
-The exhaust emissions of two stroke vehicles like motorbikes and scooters contribute to the pollution in urban areas of developing countries in South East Asia and India to a major extent. But also in Japan and selected European countries exhaust gas limitations become effective from 10/1998 and 06/1999 for these vehicles. To control this emissions catalytic aftertreatment by Hot Tubes® and/or monolith type catalysts are applied. Due to the constant rich operation of the two-stroke engines, common design criteria for three-way catalysts fail. Extremely high exhaust gas hydrocarbon concentrations lead to high exotherms during oxidation which increases the exhaust gas temperature to a range between 800 and 900 °C. Furthermore the lack of oxygen limits the CO and HC oxidation under certain engine operation conditions. Therefore, water-gas shift and steam reforming reactions play an important part in catalytic aftertreatment of two-stroke exhausts. The design of advanced catalysts has to take this into account.a Corresponding Author
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2009-12-15
Article
2017-03-13
Training / Education
2010-03-15
Training / Education
2007-03-01
Training / Education
2011-04-12