This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Modelling of a Coupled Catalyst and Particulate Filter for Gasoline Direct Injection Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
There has been extensive research in the development of Gasoline Direct Injection ‘GDI’ engine exhaust systems with the aim of reducing engine-out emissions and meeting legislation requirements. Depending on the room available for packaging the exhaust system, the engine may be equipped with a single catalyst or two catalysts one close to the engine and another one located further downstream. With the strict particulate matter emission regulations of GDI engine, the engine has to be equipped with a Gasoline Particulate Filter ‘GPF’ in addition to the Closed Coupled Catalyst ‘CCC’. The common practice is to have the GPF further downstream the catalyst. In this paper, an assessment method is carried for a new design of a hot end exhaust system. The new design brings the GPF closer to ‘CCC’ to be packed in the same enclosure. The gas flow velocity and pressure distributions inside the exhaust system are identified using CFD for a uniform exhaust gas flow inlet conditions. The system also has been investigated considering a typical inlet exhaust gas flow conditions from a GDI engine turbocharger. Results showed that the new design offers better flow uniformity in both the catalyst and GPF. Moreover, lower pressure drop across the whole system is observed relative to the baseline design with the GPF separated from the catalyst through an intermediate exhaust pipe. The GPF enclosure end shape is found to have influence on the flow uniformity and pressure drop.
CitationCirstea, R., Abo-Serie, E., Bastien, C., and Guo, H., "Modelling of a Coupled Catalyst and Particulate Filter for Gasoline Direct Injection Engines," SAE Technical Paper 2018-01-0986, 2018, https://doi.org/10.4271/2018-01-0986.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
- Van Nieuwstadt, M. and Ulrey, J., “Control Strategies for Gasoline Particulate Filters,” SAE Technical Paper 2017-01-0931 , 2017, doi:10.4271/2017-01-0931.
- Ito, Y., Shimoda, T., Aoki, T., Yuuki, K. et al. , “Next Generation of Ceramic Wall Flow Gasoline Particulate Filter with Integrated Three Way Catalyst,” SAE Technical Paper 2015-01-1073 , 2015, doi:10.4271/2015-01-1073.
- Zhang, X. and Romzek, M., “Computational Fluid Dynamics (CFD) Applications in Vehicle Exhaust System,” SAE Technical Paper 2008-01-0612 , 2008, doi:10.4271/2008-01-0612.
- Park, S., Kim, H., Cho, Y., Lee, S. et al. , “Flow Analysis and Catalytic Characteristics for the Various Catalyst Cell Shapes,” SAE Technical Paper 1999-01-1541 , 1999, doi:10.4271/1999-01-1541.
- Yoshida, T., Suzuki, H., Aoki, Y., Hayashi, N. et al. , “Development of a New Ceramic Substrate with Gas Flow Control Functionality,” SAE Int. J. Engines 10(4):1588-1594, 2017, doi:10.4271/2017-01-0919.
- Porter, S., Mat Yamin, A., Aleksandrova, S., Benjamin, S. et al. , “An Assessment of CFD Applied to Steady Flow in a Planar Diffuser Upstream of an Automotive Catalyst Monolith,” SAE Int. J. Engines 7(4):1697-1704, 2014, doi:10.4271/2014-01-2588.
- Quadri, S.S., Benjamin, S.F., and Roberts, C.A., “An Experimental Investigation of Oblique Entry Pressure Losses in Automotive Catalytic Converters,” Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 223(11):2561-2569, 2009.
- Rusli, I., Aleksandrova, S., Medina, H., and Benjamin, S., “The Effect of Swirl on the Flow Uniformity in Automotive Exhaust Catalysts,” SAE Technical Paper 2017-01-2384, 2017.
- Kawakami, A., Fukumi, Y., Ito, M., Sokawa, S. et al. , “New Evaluation Method for Thermal Shock Resistance of Honeycomb Substrates,” SAE Technical Paper 2016-01-0931, 2016, doi:10.4271/2016-01-0931.
- Ghasemi, A., Dong, M., Meda, L., and Romzek, M., “CAE Dynamic Durability Simulation of Exhaust System,” SAE Technical Paper 2013-01-0510, 2013, doi:10.4271/2013-01-0510.
- Zhang, X., Meda, L., and Keck, M., “Numerical Study on Skin Temperature and Heat Loss of Vehicle Exhaust System,” SAE Technical Paper 2005-01-1622, 2005, doi:10.4271/2005-01-1622.
- Wollin, J. and Benjamin, S., “A Study of the Flow Performance of Ceramic Contoured Substrates for Automotive Exhaust Catalyst Systems,” SAE Technical Paper 1999-01-3626, 1999, doi:10.4271/1999-01-3626.