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11th CLEERS Workshop

2008-05-13 - 2008-05-15

Emphasized topic areas:

  • Diesel Particle Filters
  • Selective Catalytic Reduction
  • Lean NOx Traps
  • Oxidation and Reformer Catalysts
  • Emissions Control Systems Integration


  • 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 11th workshop in a series sponsored by the DOE Office of Vehicle Technologies and the DOE Diesel Crosscut Team. The results of the workshop discussions 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 11

The 11th CLEERS workshop will be hosted by University of Michigan at their Dearborn Campus in Detroit from May 13th through 15th, 2008. Diesel particulate filters (DPF), selective catalytic reduction (SCR), lean NOx traps (LNTs), oxidation and reformer catalysts and emissions control systems integration will be the major discussion themes. 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.

The workshop agenda will include invited presentations by internationally prominent researchers and an invited panel of experts in integrated vehicle systems simulation. Contributed presentations of 20-30 minutes are also invited from interested parties.

Tuesday, May 13th, 2008

7:30 a.m.Registration/Continental Breakfast
8:15 a.m.Welcome and Introduction
8:45 a.m.Invited Talk: Strategies for Improving Sulfur Tolerance in Diesel LNT SystemsFriedemann Rohr, Umicore
9:45 a.m. Impact of PCCI on LNT performanceVitaly Prikhodko, Oak Ridge National Laboratory
10:15 a.m.Coffee Break
10:30 a.m. Sulfation/desulfation study on Umicore LNT catalystJae-Soon Choi, Oak Ridge National Laboratory
11:00 a.m. Ammonia Formation and Utilization in Lean NOx Trap CatalystsBill Partridge, Oak Ridge National Laboratory
11:30 a.m. NO Oxidation Rate as a Function of LNT LoadingRobert Middleton, University of Michigan
12:00 noonOn-Site Working Lunch (with discussions and Q&A on morning presentations)
1:00 p.m.Invited Talk: Aftertreatment Options and Challenges for Lean-Burn Gasoline EnginesRobert McCabe, Ford Motor Company
2:00 p.m. Detailed kinetic modeling of NOx storage and reduction with hydrogen-NH3 formationLouise Olsson, Chalmers University of Technology
2:30 p.m. Microkinetic Modeling of LNT Storage and RegenerationRichard Larson, Sandia National Laboratories
3:00 p.m.Coffee Break
3:15 p.m.Temperature and Concentration Gradients During NOX Storage and Reduction CyclingWilliam Epling, University of Waterloo
3:45 p.m.Effect of Ceria on the Sulfation and Desulfation Characteristics of Lean NOx Trap CatalystsMark Crocker, University of Kentucky
4:15 p.m.Spatio-Temporal Behavior of NOx Storage and Reduction Monolith CatalystsMichael Harold, University of Houston
4:45 p.m.Fundamental Studies of NOx Adsorber Materials at PNNLCharles Peden, Pacific Northwest National Laboratory
5:15 p.m.End of first day sessions

Wednesday, May 14, 2008

7:30 a.m.Registration/Continental Breakfast
8:00 a.m.Welcome and Introduction
8:15 a.m. MB E320 Emission Control System: Field Aging and Onboard MonitoringOwen Bailey, Umicore
8:45 a.m. From zero to four-dimensional after-treatment models: needs and challengesGrigorios Koltsakis, Aristotle University Thessaloniki
9:15 a.m. Development and Application of a Fast Quasi-Steady Solver for Integrated Modeling of Exhaust Aftertreatment SystemsSyed Wahiduzzaman, Gamma Technologies
9:45 a.m. Thermokinetic Analysis of Ethylene Soot and Diesel Engine SootKhalid Al-Qurashi, Penn State Univ.
10:15 a.m.Coffee Break
10:30 a.m. EGR fouling with soot emissions controlGordon Bartley, Southwest Research Institute
11:00 a.m. The impact of biodiesel fuel blends on after treatment device performance in light-duty vehiclesMatthew Thornton, NREL
11:30 a.m. Fundamental Modeling and Experimental Studies of DPF OperationMark Stewart, PNNL
12:00 noonOn-Site Working Lunch (with discussions and Q&A on morning presentations)
1:00 p.m.Invited Talk: DPF modeling: origins and evolutionEdward Bissett, GM R&D
2:00 p.m. Studies of biofuel impact on diesel particulate matterAndrea Strzelec, Oak Ridge National Laboratory
2:30 p.m. StarCD es-aftertreatment: Shared library interface for thirdMichael Weaver, CD-adapco
3:00 p.m.Coffee Break
3:15 p.m. ERC studies of DPF performance and soot characteristicsDavid Foster, Engine Research Center
3:45 p.m. In Silico Assessment of Diesel Emission Control Materials: Vision, Status and RoadmapAthanasios Konstandopoulos, APT Lab, CPERI/CERTH
4:15 p.m. Impact of Biodiesel on Advanced Aftertreatment SystemsAaron Williams, NREL
4:45 p.m. An update on Lean NOx trap modeling in PSATKalyana Chakravarthy, Oak Ridge National Laboratory
5:15 p.m.End of second day sessions
6:30 p.m.No-Host Dinner
6:30 p.m.Dinner Talk: Nanomaterials: Organic and Inorganic for Next Generation Diesel TechnologiesRandy Vander Wal, USRA

Thursday, May 15, 2008

7:30 a.m.Registration/Continental Breakfast
8:00 a.m.Welcome and Introduction
8:15 a.m.X-Ray inspection of Diesel Particulate FiltersJan Zandhuis, 3DX-Ray Ltd
8:45 a.m.Accelerated Aging of Emission Control DevicesTodd Toops, Oak Ridge National Laboratory
9:15 a.m. Invited Talk: SCR modeling and simulationDaniel Chatterjee, Daimler AG
10:15 a.m.Coffee Break
10:30 a.m. Thermal Transient Effects on the Performance of Catalysts for SCR of NOxJonathan Male, Pacific Northwest National Laboratory
11:00 a.m. Simulation Based Control System Analysis of a Urea-SCR Aftertreatment System Based on NH3 SensingMaruthi N. Devarakonda, Michigan Tech University
11:30 a.m. Effect of Mass Transfer on the Performance of SCR SystemsNimrod Kapas, University of Michigan - Dearborn
12:00 noonOn-Site Working Lunch (with discussions and Q&A on morning presentations)
1:00 p.m.Invited Talk: Mechanistic Studies of the Reduction of NOx by OxygenatesEric Weitz, Northwestern University
2:00 p.m. Kinetic models for NH3 SCR over Cu-ZSM-5Louise Olsson, Chalmers University of Technology
2:30 p.m. 1D/3D Simulation in the Development of DeNOx Aftertreatment Systems for US10 Heavy Duty ApplicationJohann Christian Wurzenberger, AVL List GmbH
3:00 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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