This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Engine-Aftertreatment in Closed-Loop Modeling for Heavy Duty Truck Emissions Control
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 02, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
An engine-aftertreatment computational model was developed to support in-loop performance simulations of tailpipe emissions and fuel consumption associated with a range of heavy-duty (HD) truck drive cycles. For purposes of this study, the engine-out exhaust dynamics were simulated with a combination of steady-state engine maps and dynamic correction factors that accounted for recent engine operating history. The engine correction factors were approximated as dynamic first-order lags associated with the thermal inertia of the major engine components and the rate at which engine-out exhaust temperature and composition vary as combustion heat is absorbed or lost to the surroundings. The aftertreatment model included catalytic monolith components for diesel exhaust oxidation, particulate filtration, and selective catalytic reduction of nitrogen oxides (NOx) with urea. Both the engine and aftertreatment models have been calibrated with dynamometer measurements from a commercial 2010-certificated 15-L Cummins diesel engine. The fuel consumption engine map with the reduced data is attached in the appendix. Simulations with the combined engine and aftertreatment models above appear to reveal important trends among the fuel efficiency, emissions control, power demand for HD trucks under realistic drive cycle conditions. Thus, this type of computational simulation appears to have significant value in choosing among options for HD vehicle design and operation.
CitationGao, Z., Deter, D., Smith, D., Pihl, J. et al., "Engine-Aftertreatment in Closed-Loop Modeling for Heavy Duty Truck Emissions Control," SAE Technical Paper 2019-01-0986, 2019, https://doi.org/10.4271/2019-01-0986.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- https://www.energy.gov/eere/vehicles/about-us, Accessed by October 15, 2018.
- https://www.washingtonpost.com/news/energy-environment/wp/2016/08/16/white-house-sets-new-fuel-efficiency-standards-for-heavy-duty-trucks-vans-and-buses/?noredirect=on&utm_term=.b8670498d26d , Accessed by October 15, 2018.
- Gao, Z., Smith, D.E., Daw, C.S., Edwards, K.D. et al. , “The Evaluation of Developing Vehicle Technologies on the Fuel Economy of Long-Haul Trucks,” Energy Conversion and Management 106:766-781, 2015.
- Gao, Z., Lin, Z., and Franzese, O. , “Energy Consumption and Cost Savings of Truck Electrification for Heavy-Duty Vehicle Applications,” Transportation Research Record: Journal of the Transportation Research Board 2628:99-109, 2017.
- Gao, Z., Lin, Z., LaClair, T.J., Liu, C. et al. , “Battery Capacity and Recharging Needs for Electric Buses in City Transit Service,” Energy 122:588-600, 2017.
- https://aceee.org/sites/default/files/super-truck-0517.pdf , Accessed by October 15, 2018.
- Gao, Z., Chakravarthy, V.K., and Daw, C.S. , “Comparisons of the Simulated Emissions and Fuel Efficiencies of Diesel and Gasoline Hybrid Electric Vehicles,” Proc. IMechE - Part D: Journal of Automobile Engineering 225(7):944-959, 2011.
- Johnson, T.V. , “Review of Diesel Emissions and Control,” International Journal of Engine Research 10(5):275-285, 2009.
- Chen, H.Y., Mulla, S., Weigert, E., Camm, K. et al. , “Cold Start Concept (CSC™) a Novel Catalyst for Cold Start Emission Control,” SAE Int. J. Fuels Lubr. 6(2):372-381, 2013, doi:10.4271/2013-01-0535.
- Gao, Z., Curran, S.J., Parks, J.E., Smith, D.E. et al. , “Drive Cycle Simulation of High Efficiency Combustions on Fuel Economy and Exhaust Properties in Light-Duty Vehicles,” Applied Energy 157:762-776, 2015.
- https://www.arb.ca.gov/msprog/onrdiesel/onrdiesel.htm, Accessed by October 15, 2018.
- https://www.autonomie.net/, Accessed by October 15, 2018.
- https://www.delphi.com/sites/default/files/inline-files/2016-2017-heavy-duty-amp-off-highway-vehicles_0.pdf?sfvrsn=0.03636262961639791&status=Temp, Accessed by October 15, 2018.
- Gao, Z., Conklin, J.C., Daw, C.S., and Chakravarthy, V.K. , “A proposed Methodology for Estimating Transient Engine-Out Temperature and Emissions from Steady-State Maps,” International Journal of Engine Research 11(2):137-151, 2010.
- Gao, Z., Daw, C.S., and Chakravarthy, V.K. , “Simulation of Catalytic Oxidation and Selective Catalytic NOx Reduction in Lean-Exhaust Hybrid Vehicles,” SAE Technical Paper 2012-01-1304 , 2012, doi:10.4271/2012-01-1304.
- Triana, A.P. , “Development of Models to Study the Emissions, Flow, and Kinetic Characteristics from Diesel Oxidation Catalysts and Particulate Filters,” Dissertation, Michigan Technological University, 2005.
- Prikhodko, V., Curran, S., Barone, T., Lewis, S. et al. , “Emission Characteristics of a Diesel Engine Operating with In-Cylinder Gasoline and Diesel Fuel Blending,” SAE Int. J. Fuels Lubr. 3(2):946-955, 2010, doi:10.4271/2010-01-2266.
- Daw, C.S., Gao, Z., Smith, D.E., Laclair, T.J. et al. , “Simulated Fuel Economy and Emissions Performance during City and Interstate Driving for a Heavy-Duty Hybrid Truck,” SAE Int. J. Commer. Veh. 6(1):161-182, 2013, doi:10.4271/2013-01-1033.
- Gao, Z., Pihl, J.A., Parks, J.E. II, and Daw, C.S. , “1D Kinetic Modeling of NH3-SCR with Two-Sites of NH3-Storage and Its application in LD Vehicle Emissions Control,” CLEERS, 2017.
- Gao, Z., Daw, C.S., Wagner, R.M., Edwards, K.D., and Smith, D.E. , “Simulating the Impact of Premixed Charge Compression Ignition on Light-Duty Diesel Fuel Economy and Emissions of Particulates and NOx,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 227(1):31-51, 2013.
- Smith, D., Curran, S., and Gao, Z. , “Powertrain Controls Optimization for Heavy Duty Line Haul Trucks,” in 2015 U.S. DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, Washington, DC, June 8-12, 2015.
- https://www.dieselnet.com/standards/#eu, Accessed by October 15, 2018.
- Gao, Z., Finney, C., Daw, C., LaClair, T. et al. , “Comparative Study of Hybrid Powertrains on Fuel Saving, Emissions, and Component Energy Loss in HD Trucks,” SAE Int. J. Commer. Veh. 7(2):414-431, 2014, doi:10.4271/2014-01-2326.
- Gao, Z., LaClair, T.J., Smith, D.E., and Daw, C.S. , “Exploring Fuel-Saving Potential of Long-Haul Truck Hybridization,” Transportation Research Record: Journal of the Transportation Research Board 2502:99-107, 2015.