This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Off-Highway Exhaust Gas After-Treatment:Combining Urea-SCR, Oxidation Catalysis and Traps
Annotation ability available
Sector:
Language:
English
Abstract
Primary measures, to reduce the NOx emissions from diesel engines, penalize the fuel consumption and aggravate the CO2 problem. Instead, an after-treatment system is proposed that permits optimum combustion and yet reduces the NOx by more than 95%. Such installations are in operation for more than five years. Successful deployment on a short-haul ferry, subject to highly cyclic operation, began in Spring 1992. The chief features are high space-velocity (25,000 1/h), urea as non-toxic reactant and rapid transient response. The attained results counter the misgivings about the SCR catalysis. Development aims at further halving the size thus facilitating service in off-highway vehicles such as locomotives and earth-movers. The integration of particulate traps using knitted micro-fibers is under development.
Recommended Content
Authors
Topic
Citation
Hug, H., Mayer, A., and Hartenstein, A., "Off-Highway Exhaust Gas After-Treatment:Combining Urea-SCR, Oxidation Catalysis and Traps," SAE Technical Paper 930363, 1993, https://doi.org/10.4271/930363.Also In
References
- A. Booz & Hamilton Inc. Locomotive Emission Study CARB
- Mitsubishi Chemical Industries 1974
- Lepperhoff G. Schommers J 1988
- Hug H.T. 1992
- Ruppel W. et al. Stuttgart 10 1990
- Buck A. Mayer A. Knitted Ceramic Fibers - A New Concept for Particulate Traps SAE 920146
- Götmall A. Haltiner W.
- Curry-Hyde E. Baiker A. Amorphous Chromia for Low-Temperature Selective Catalytic Reduction of Nitric Oxide I+EC Research 1990 29
- Mayer A. Buck Bressler The Knitted Particulate Trap: Field Experience and Development Progress SAE 93