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9th CLEERS Workshop

2006-05-02 - 2006-05-04

Emphasized topic areas:

  • Diesel Particle Filters
  • Selective Catalytic Reduction
  • Lean NOx Traps
  • Synergies between these three components in actual systems


  • Provide technical updates on the latest developments for these technologies and corresponding simulation tools
  • Enhance emissions control collaboration among industry, government and universities
  • Improve and update recognition of key research priorities


CLEERS workshops are intended as relatively informal but tightly focused forums for sharing recent research results on understanding and simulating lean exhaust emissions control. Joint participation by researchers in government, universities, and industry is encouraged. This is the 9th workshop in a series sponsored by the DOE Office of FreedomCAR and Vehicle Technologies and the DOE Diesel Crosscut Team. The results of the workshop discussions, especially the all-participant discussion at the end, will be documented for the DOE Office of Transportation Technology (OTT) for consideration in improving R&D priorities and technical focus in DOE-supported transportation programs.

About Workshop 9

The 9th CLEERS workshop will be hosted by University of Michigan at their Dearborn Campus in Detroit from May 2nd through 4th, 2006. Diesel particulate filters (DPF), selective catalytic reduction (SCR) and lean NOx traps (LNT’s) will be the major discussion themes, but it is also anticipated that there will be important updates on synergies among these components in actual systems. As with the previous CLEERS workshops, this will be a public meeting open to all who are interested in the most recent developments in understanding and simulating the performance of these devices under realistic conditions.

It is expected that the workshop presentations will include invited presentations by internationally prominent researchers in DPF, SCR and LNT. Contributed presentations of 20-30 minutes about DPF, SCR, and LNT technologies are also invited from interested parties. Those who are interested in making such presentations should contact one of the following topical coordinators:

Tuesday, May 2nd, 2006

7:30 a.m.Registration/Continental Breakfast
8:30 a.m.Welcome and Introduction
9:00 a.m.Invited Talk: Detailed Diesel Exhaust Particulate Characterization and Real Time DPF Filtration Efficiency and Regeneration MeasurementsDavid Foster, University of Wisconsin - Madison
10:00 a.m.Coffee Break
10:15 a.m. Comparative XPS and HRTEM of Real-World SootsRandy Vander Wal, USRA (non-profit)
10:45 a.m. Use of the MTU 1D 2-layer CPF Model to Understand Filtration and Oxidation Characteristics of a DOC-CPF SystemKiran Premchand, Michigan Tech University
11:15 a.m. Modeling of Wall-flow Particulate Filters with Catalyst ZoningGrigorios Koltsakis, Aristotle University Thessaloniki
11:45 a.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
1:00 p.m.Methodology to Control the Uncontrolled DPF RegenerationsRijing Zhan, Southwest Research Institute
1:30 p.m.Wall-Flow Filters with Wall-Integrated Oxidation CatalystMartin Votsmeier, Umicore
2:00 p.m. Relating Pore Scale DPF Models to Macroscopic Filter BehaviorHeather Dillon, Pacific Northwest National Laboratory
2:30 p.m.Coffee Break
2:45 p.m.Advanced DPF loading monitoring with microwavesLeslie Bromberg, MIT
3:15 p.m.Assessment Methodology for Diesel Particulate Filter TechnologiesAthanasios Konstandopoulos, APT Lab, CERTH/CPERI
3:45 p.m.Invited Talk: Fuel and System Interaction Effects on Urea-SCR Control of NOx in Diesel Exhaust AftertreatmentRagini Acharya, Pennsylvania State University
4:45 p.m.Modeling the Impact of System Design Choices on DPF PerformanceMatthew Henrichsen, Fleetguard Emission Solutions
5:15 p.m.CFD Modeling of Diesel Particulate FilterYong Yi, Fluent Inc.
5:45 p.m.Remarks on recent DPF studies in collaboration with FordAlan Mueleer, CD-Adapco
6:00 p.m.End of first day sessions
6:30 p.m.No-Host Dinner

Wednesday, May 3rd, 2006

8:00 a.m.Registration/Continental Breakfast
8:30 a.m.Welcome and Introduction
8:45 a.m.Development of a DPNT Hybrid ModelAndrea Strzelec, UW-ERC/ORNL
9:15 a.m. Using an Integrated System Model to Simulate a Diesel Engine with Exhaust AftertreatmentStephen England, UW-ERC
9:45 a.m.Coffee Break
10:00 a.m. Integrated Aftertreatment System Modeling Using GT-POWERSyed Wahiduzzaman, Gamma Technologies Inc.
10:30 a.m. Invited Talk: Bosch Urea Dosing Approach for Future Emission Legislature for Light and Heavy Duty SCR ApplicationsMansour Masoudi, Robert Bosch Corporation
11:30 a.m. Combined SCR/DPF System for Tier 2 LDTChristine Lambert, Ford Research Labs
12:00 noonOn-Site Working Lunch (with discussions and Q&A on morning presentations)
1:00 p.m.Simulation and Optimization of DPF and SCR SystemsRoland Wanker, AVL
1:30 p.m. SCR of NOx with NH3 over Cu-ZSM-5. The Effect of Changing the Gas CompositionLouise Olsson, Chalmers University of Technology
2:00 p.m. Invited Talk: SCR Modeling and SimulationDaniel Chatterjee, DaimlerChrysler AG
3:00 p.m.Coffee Break
3:15 p.m. Mathemetical model development for the Urea SCRJeong Kim, Ford Motor Co.
3:45 p.m. On-board Ammonia Generation using ReformateMark Hemingway, Delphi
4:15 p.m. Evaluation of Supplier Catayst Formulations for the Selective Catalytic Reduction of NOx with AmmoniaJong Lee, General Motors
4:45 p.m. LNT and SCR based NOx aftertreatment systems for the North American diesel marketUlrich Goebel, Umicore AG & Co. KG
5:15 p.m.End of second day sessions
6:30 p.m.No-Host Dinner

Thursday, May 4th, 2006

8:00 a.m.Registration/Continental Breakfast
8:30 a.m.Welcome and Introduction
8:45 a.m. Invited Talk: Kinetics and Mechanistic Studies of NOx Storage and Reduction on Model Pt/Ba/Alumina CatalystsMichael Harold, University of Houston
9:45 a.m.Sulfation and Desulfation Studies of Lean NOx TrapsJosh Pihl, Oak Ridge National Laboratory
10:05 a.m.Coffee Break
10:20 a.m. Assessing Monolith Length Effect on LNT PerformanceJae-Soon Choi, Oak Ridge National Laboratory
10:40 a.m.Experimental studies of N species selectivity during regeneration of lean NOx trapsJosh Pihl, Oak Ridge National Laboratory
11:00 a.m.Modeling Kinetics of NH3 and N2O Formation in Lean NOx TrapsRichard Larson, Sandia National Laboratories
11:30 a.m.On-Site Working Lunch (with discussions and Q&A on morning presentations)
12:30 p.m. Invited Talk: Reductant Use and N-Byproduct Formation During Regeneration of a NSR CatalystWilliam Epling, University of Waterloo
1:30 p.m.LNT Morphology Changes with Lean/Rich CyclingCharles Peden, Pacific Northwest National Laboratory
2:00 p.m.Desulfation Chemistry Study of Reformate-Assisted Diesel NOx TrapsMing-Cheng Wu, Delphi Research Labs
2:30 p.m. The Feasibility of an Alumina-Based Lean NOx Trap (LNT) for DieselLifeng Xu, Ford Motor Company
3:00 p.m. Lean NOx Trap Modeling Based on Novel Measurement TechniquesShawn Midlam-Mohler, Ohio State University
3:30 p.m. NOx Storage and Reduction over Pt Based Catalysts with Hydrogen as Reducing Agent - NH3 Formation and Influence of CO2 and H2OLouise Olsson, Chalmers University of Technology
4:00 p.m.End of third day sessions


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University Of Michigan – Deaborn
4901 Evergreen Road
Dearborn, MI 48128 United States
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