Catalyst Modeling Challenges for Electrified Powertrains
To meet the upcoming CO<sub>2</sub> reduction challenges, the further electrification of vehicle powertrains is indispensable. In combination with the post-Euro 6 requirements for criteria pollutants, the exhaust system is expected to be more complex to allow for extremely low emissions...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Catalysts |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4344/11/5/539 |
| _version_ | 1797536638906138624 |
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| author | Thomas Souliotis Grigorios Koltsakis Zissis Samaras |
| author_facet | Thomas Souliotis Grigorios Koltsakis Zissis Samaras |
| author_sort | Thomas Souliotis |
| collection | DOAJ |
| description | To meet the upcoming CO<sub>2</sub> reduction challenges, the further electrification of vehicle powertrains is indispensable. In combination with the post-Euro 6 requirements for criteria pollutants, the exhaust system is expected to be more complex to allow for extremely low emissions under all driving conditions, potentially involving technologies such as electrical heating and phase-change materials. The longer ‘zero-flow’ operation of the exhaust system in hybrid applications and the associated light-out risk have demanding accuracy requirements for heat loss calculations and require additional thermal management strategies. This paper discusses the additional challenges posed with regard to catalyst modeling in the boundary conditions of electrified vehicles and the necessary improvements that go beyond the state-of-the-art techniques. Most of the necessary improvements are linked to advanced 3D modeling of the exhaust system components accounting for free convection and radiative heat transfer. Modeling of electrically assisted heating is demonstrated using a new approach involving a combined 3D electrical–thermal solver. Heat retention technologies with use of phase-change materials are also accounted for in these new-generation models. Finally, the need for a tighter integration of these high-fidelity models into a vehicle simulation framework is discussed. |
| first_indexed | 2024-03-10T12:03:37Z |
| format | Article |
| id | doaj.art-3c20a180fa494dec86552020b5544583 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T12:03:37Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-3c20a180fa494dec86552020b55445832023-11-21T16:44:33ZengMDPI AGCatalysts2073-43442021-04-0111553910.3390/catal11050539Catalyst Modeling Challenges for Electrified PowertrainsThomas Souliotis0Grigorios Koltsakis1Zissis Samaras2Exothermia SA, 57001 Thessaloniki, GreeceLaboratory of Applied Thermodynamics, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Applied Thermodynamics, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceTo meet the upcoming CO<sub>2</sub> reduction challenges, the further electrification of vehicle powertrains is indispensable. In combination with the post-Euro 6 requirements for criteria pollutants, the exhaust system is expected to be more complex to allow for extremely low emissions under all driving conditions, potentially involving technologies such as electrical heating and phase-change materials. The longer ‘zero-flow’ operation of the exhaust system in hybrid applications and the associated light-out risk have demanding accuracy requirements for heat loss calculations and require additional thermal management strategies. This paper discusses the additional challenges posed with regard to catalyst modeling in the boundary conditions of electrified vehicles and the necessary improvements that go beyond the state-of-the-art techniques. Most of the necessary improvements are linked to advanced 3D modeling of the exhaust system components accounting for free convection and radiative heat transfer. Modeling of electrically assisted heating is demonstrated using a new approach involving a combined 3D electrical–thermal solver. Heat retention technologies with use of phase-change materials are also accounted for in these new-generation models. Finally, the need for a tighter integration of these high-fidelity models into a vehicle simulation framework is discussed.https://www.mdpi.com/2073-4344/11/5/539emission controlautomotive catalystelectric hybridsphase-change materialselectric heaters |
| spellingShingle | Thomas Souliotis Grigorios Koltsakis Zissis Samaras Catalyst Modeling Challenges for Electrified Powertrains Catalysts emission control automotive catalyst electric hybrids phase-change materials electric heaters |
| title | Catalyst Modeling Challenges for Electrified Powertrains |
| title_full | Catalyst Modeling Challenges for Electrified Powertrains |
| title_fullStr | Catalyst Modeling Challenges for Electrified Powertrains |
| title_full_unstemmed | Catalyst Modeling Challenges for Electrified Powertrains |
| title_short | Catalyst Modeling Challenges for Electrified Powertrains |
| title_sort | catalyst modeling challenges for electrified powertrains |
| topic | emission control automotive catalyst electric hybrids phase-change materials electric heaters |
| url | https://www.mdpi.com/2073-4344/11/5/539 |
| work_keys_str_mv | AT thomassouliotis catalystmodelingchallengesforelectrifiedpowertrains AT grigorioskoltsakis catalystmodelingchallengesforelectrifiedpowertrains AT zississamaras catalystmodelingchallengesforelectrifiedpowertrains |