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Euro - III Emission Control for Open Loop 2-Wheelers
Technical Paper
2007-26-013
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2007
Language:
English
Abstract
With the introduction of Euro- III emission regulations for 2-wheelers in Europe, emission control for motorcycles and scooters has become a significant technological challenge. While many vehicles have shifted from 2-stroke to 4-stroke, they are mostly still open loop carbureted or in some cases fuel injected. Euro- III regulation requires emission measurement from key-on and has a high speed phase for vehicles over 150cc engine displacement. The combination of cold start fuel enrichment (with or without secondary air injection) and high exhaust flow rates is particularly challenging for controlling the emissions of THC, CO and NOx simultaneously.
If the engine is tuned lean to reduce THC and CO emissions, NOx emissions will increase during high speed operation. On the other hand, if the engines are rich tuned, this increases the cold start and/or high speed acceleration mode THC and CO emissions. This paper describes some unique catalytic solutions for managing all three regulated pollutants for such open loop fuel-system vehicles with secondary air systems.
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Citation
Kumar, S., Adomaitis, J., and Alive, K., "Euro - III Emission Control for Open Loop 2-Wheelers," SAE Technical Paper 2007-26-013, 2007, https://doi.org/10.4271/2007-26-013.Also In
References
- Bosteels, D. “An Investigation Into the Challenges of Achieving Future Legislative Limits Over Euro-III and WMTC Drive Cycles for Current State-Of-The-Art Motorcycle Technologies” 2005 SAE Brasil Fuels and Lubricants Meeting Rio De Janiero, BRASIL 2005-01-2156
- Ethridge, P. et al. “Meeting Euro- III - The Technical Challenge and Potential Solutions for Sub-150cc 4-Stroke Motorcycles and Scooters” China Motorcycle Forum September 2005
- Akamatsu, S. et al. “Research into New Emission Control Techniques for Motorcycles to Achieve the EURO-3 Regulation” SAE Paper No. 2004-32-0032