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LOTUS: A Co-operation for Low Temperature Urea-Based Selective Catalytic Reduction of NOx

2004; Linguagem: Inglês

10.4271/2004-01-1294

2688-3627

Anders E. C. Palmqvist, Edward Jobson, Lennart Andersson, Roland Granbro, Marcus Wendin, Lucas Megas, Patrick Nisius, Andreas Wiartalla, Gerhard Lepperhoff, Phil Blakeman, T. Ilkenhans, D. E. Webster, Gunnar Haeffler, Patrick Van De Voorde, P. Schmidt-Zhang, U. Guth, Mikaela Wallin,

Catalysis and Hydrodesulfurization Studies

The European research co-operation Lotus is presented. The main objectives of the project were i) to show the potential for a urea-based SCR system to comply with the EU standard of years 2005 and 2008 for heavy-duty Diesel engines for different driving conditions with optimal fuel consumption, ii) to reach 95 % conversion of NOx at steady state at full load on a Euro III. engine, iii) to reach 75 % NOx reduction for exhaust temperatures between 200-300°C, and 85 % average NOx reduction between 200-500°C. The energy content of the consumed urea should not exceed 1.0 %, calculated as specific fuel consumption. These targets were met in May 2003 and the Lotus SCR system fulfilled the Euro V NOx legislative objectives for year 2008. Copyright © 2004 SAE International.