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2014 CLEERS Workshop

2014-04-29 - 2014-05-01

Emphasized topic areas:

  • Diesel Particle Filters
  • Selective Catalytic Reduction
  • Urea Spray Modeling
  • Oxidation and Reforming Catalysts
  • Passive Adsorbers and Traps
  • Multi-Functional Catalysts and Aftertreatment Devices
  • Emissions Controls and Engine Integration
  • Three-way Catalysts
  • Low-Temperature Catalysis
  • Interpretation of Experimental Aftertreatment Measurements
  • Development of Micro-Kinetic and Global Reaction Mechanisms
  • Drive Cycle Simulations of Conventional and Hybrid Vehicles
  • Engine Exhaust Speciation
  • Particulate Emissions Characterization


  • Share experience on the latest developments for aftertreatment technologies and corresponding simulation tools
  • Enhance emissions control research collaboration among industry, government and universities
  • Identify key research priorities


This is the 17th workshop in a series sponsored by the DOE Office of Vehicle Technologies and the DOE Advanced Engine Crosscut Team. CLEERS workshops are informal, focused forums for sharing recent research results on lean and advanced engine emissions controls and their simulation. Participation by researchers in government, universities, and industry is welcome. Workshop discussions will be summarized for the DOE Office of Transportation Technologies (OTT) and the Advanced Engine Crosscut Team for consideration in improving priorities and technical focus and maximizing leveraging in DOE and industry-supported R&D.

About the 2014 Workshop

This will be a public meeting open to all those who are interested in understanding and simulating the performance of exhaust emission control devices under realistic conditions. The agenda will include invited presentations by internationally prominent researchers and an invited panel of experts from industry. Contributed oral presentations of 20-30 minutes and posters are also invited.
Questions should be directed to:

Tuesday, April 29th, 2014

8:00 a.m.Registration/Continental Breakfast
8:30 a.m.Welcome and Introduction
8:45 a.m.Invited Talk: Cold-start and low-temperature emissions challengesRobert McCabe, Ford Motor Company
9:30 a.m. ESR study of CuSSZ13 for removing NOx by NH3In-Sik Nam, Pohang University of Science and Technology (POSTECH)
9:50 a.m. NH3 storage isotherms: a path toward better models of NH3 storage on zeolite SCR catalystsJosh Pihl, Oak Ridge National Laboratory
10:10 a.m. Coffee Break
10:40 a.m.NH3-SCR on fresh and hydrothermally aged Fe-SSZ-13 catalystsFeng Gao, PNNL
11:00 a.m. Impact of copper loading on the copper species and SCR reactions over Cu-SAPO-34Kirsten Leistner, Chalmers University of Technology
11:20 a.m. Investigation of the influence of hydrocarbons on Cu-zeolite SCR behaviorVolker Schmeisser, Daimler AG
11:40 a.m. Experimental and Modeling Study of the Low-T Activity Enhancement of a Fe-Zeolite SCR CatalystVadim Strots, IAV GmbH
12:00 NoonOn-Site Working Lunch (with discussions and Q&A on morning presentations)
1:00 p.m.Invited Talk: New insights into the properties of and mechanistic roles of Bronsted acid sites in Cu-zeolites thatRajamani Gounder, Purdue University
1:45 p.m. Structure/Activity Relationships in Cu-CHA-Based NH3 Selective Catalytic Reduction CatalystsCharles Peden, Pacific Northwest National Laboratory
2:05 p.m. Modeling Fundamental Characteristics and Performance of Degreened and Aged Cu-CHA NH3–SCR CatalystsSaurabh Joshi, Cummins Inc.
2:25 p.m. Sulfur Poisoning Impacts on SCR over Cu-SAPO-34William Epling, University of Houston
2:45 p.m.Coffee Break
3:15 p.m.Invited Talk: Reversible Activation/Deactivation effects: a challenge for catalyst simulation and a chance for low temperature exhaust treatmentMartin Votsmeier, Umicore
4:00 p.m. Global kinetic modeling of hydrothermal aging of NH3-SCR over Cu zeolitesLouise Olsson, Chalmers University of Technology
4:20 p.m. Development and implementation of a model based SCR control systemPraveen Chavannavar, Caterpillar
4:40 p.m. An Efficient Methodology for Global SCR Kinetic Model TuningYuanzhou Xi, Cummins Emission Solutions
5:00 p.m. Modeling the Gasification Process of Urea-Water-Solution DropletMario Trujillo, University of Wisconsin
5:20 p.m. Implementing the Effect of ANR Non-Uniformity on Transient SCR Performance through 3D-1D CouplingApoorv Kalyankar, Cummins
5:40 p.m.End of first day sessions

Wednesday, April 30th, 2014

8:00 a.m.Registration/Continental Breakfast
8:30 a.m.Welcome and Introduction
8:45 a.m. Development of test protocols for low temperature aftertreatment - The 150deg C ChallengeGeorge Muntean, Pacific Northwest National Laboratory
9:10 a.m. Fuel Economy Evaluation of Three-Way Catalyst Control Strategies in a Multimode Combustion ContextSandro Nuesch, University of Michigan
9:30 a.m. New Approach to Washcoat Diffusion ResistanceEdward Bissett, Gamma Technologies
9:50 a.m. Ammonia generation over TWC for passive SCR NOX control in lean gasoline enginesVitaly Prikhodko, Oak Ridge National Laboratory
10:10 a.m. Coffee Break
10:40 a.m. Detailed Characterization of Particulates Emitted byLean-Burn Gasoline Direct Injection EngineAlla Zelenyuk, Pacific Northwest National Laboratory
11:00 a.m. Oxidation Characteristics of Gasoline Direct-injection (GDI) Engine Soot - Catalytic Effects of AshSeungmok Choi, Argonne National Laboratory
11:20 a.m. Unique Properties of Gasoline Direct Injection (GDI) Engine Particulate Matter (PM)Heeje Seong, Argonne National Laboratory
11:40 a.m. Vehicular Emissions Review and Challenges Moving ForwardTimothy Johnson, Corning Incorporated
12:00 noonOn-Site Working Lunch (with discussions and Q&A on morning presentations)
1:00 p.m.Panel Discussion: Expected impacts of advanced combustion regimes and alternate fuels on emissions controlsWill Ruona, Ford
Neal Currier, Cummins
Chang Kim, GM
Craig DiMaggio, Chrysler
Tim Johnson, Corning
Stuart Johnson, VW
2:30 p.m. Coffee Break
3:00 p.m. Kinetics of N2O and N2 Peaks During and After the Regeneration of Lean NOx TrapDavid Mracek, Institute of Chemical Technology, Prague
3:20 p.m. Enhanced NOx Conversion With Fast Lean-Rich Cycling on NOx Storage CatalystsMike Harold, University of Houston
3:40 p.m. Spatiotemporal development of reactions over coupled LNT-SCR catalysts under lean/rich cycling conditionsMi-Young Kim, Oak Ridge National Laboratory
4:00 p.m. Physical and Chemical Characterization of Gasoline and Diesel Engine Carbonaceous ParticulateRandy Vander Wal, Penn State University
4:20 p.m. Microstructural features of catalyzed and uncatalyzed DPFsMark Stewart, PNNL
4:40 p.m. Wall-Flow Particulate Filters With Asymmetric and Variable Cell GeometryAthanasios Konstandopoulos, APT Lab, CPERI/CERTH
5:00 p.m. Particle Size-Dependent Filtration of Clean (Non-loaded) Diesel Particulate FiltersJessica Sheappard, Texas A&M University (CRCL)
5:20 p.m.End of second day sessions
6:30 p.m.No-Host Dinner: LaPita Mediterranean Cuisine Restaurant in Dearborn. Advanced registration to attend is required.

Thursday, May 1st, 2014

8:00 a.m.Registration/Continental Breakfast
8:30 a.m.Welcome and Introduction
8:45 a.m.Invited Talk: Implications of Advanced Combustion Strategies on Emission Control System DesignCary Henry, Southwest Research Institute
9:30 a.m. Water-Gas Shift Catalysts for use in D-EGR EnginesGordon Bartley, Southwest Research Institute
9:50 a.m. Investigation of Low Temperature Emissions Control CatalystsTodd Toops, ORNL
10:10 a.m. Coffee Break
10:40 a.m. Robust Nitrogen Oxide/Ammonia Sensors for On-Board Emissions ControlEric Brosha, Los Alamos National Laboratory
11:00 a.m. Computational Analysis of After-Treatment Systems to Obtain High NOx Conv. in Future Diesel EnginesBalaji Sukumar, Johnson Matthey
11:20 a.m. A Study on Physical Chemistry of Solid Ammonium MaterialsCheon Yoon, Hannam University
11:40 a.m. Modeling the impact of lube oil on catalyst performancePraveen Chavannavar, Caterpillar
12:00 noonEnd of third day sessions
Wrap up and adjourn


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