Engine on/off management with consideration of thermal dynamics for HEVs
An Internal Combustion Engine (ICE) suffers from extra gas injection and higher friction loss during operation in low temperatures, which provides the possibility for further improving the energy efficiency/economy with multiple power sources for a hybrid electric vehicle (HEV). However, it is chall...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844025001410 |
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| author | Wei Wang Tielong Shen |
| author_facet | Wei Wang Tielong Shen |
| author_sort | Wei Wang |
| collection | DOAJ |
| description | An Internal Combustion Engine (ICE) suffers from extra gas injection and higher friction loss during operation in low temperatures, which provides the possibility for further improving the energy efficiency/economy with multiple power sources for a hybrid electric vehicle (HEV). However, it is challenging to provide a real-time efficient engine on/off policy that integrating the slow thermal dynamics with uncertain traffic and workload conditions. Existing solutions mainly focus on the non-linear optimization or complex learning-based methods, which unavoidably lead to high computation burden and hard to be online implemented. In this work, based on the most efficient operation point of engine, we transfer the energy optimization problem into the decision making of engine on/off, which greatly reduce the computation burden and is more practically applicable. Three rule-based engine on/off strategies, including the benchmark one that does not consider the thermal influences and two hysteresis strategies incorporating the thermal state, are compared through simulations under randomly generated driving profiles. Results verified that the proposed hysteresis strategies are feasible and the overall energy efficiency/economy can be enhanced by considering thermal influences in engine on/off decision. |
| format | Article |
| id | doaj-art-896e3b565ad54c02a1cab8c72fc8fd0c |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-896e3b565ad54c02a1cab8c72fc8fd0c2025-02-02T05:28:07ZengElsevierHeliyon2405-84402025-01-01112e41761Engine on/off management with consideration of thermal dynamics for HEVsWei Wang0Tielong Shen1Department of Mechanical System Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Tokyo, 184-8588, Japan; Corresponding author.Department of Engineering and Applied Sciences, Sophia University, 7-1 Kioicho, Tokyo, 102-8554, JapanAn Internal Combustion Engine (ICE) suffers from extra gas injection and higher friction loss during operation in low temperatures, which provides the possibility for further improving the energy efficiency/economy with multiple power sources for a hybrid electric vehicle (HEV). However, it is challenging to provide a real-time efficient engine on/off policy that integrating the slow thermal dynamics with uncertain traffic and workload conditions. Existing solutions mainly focus on the non-linear optimization or complex learning-based methods, which unavoidably lead to high computation burden and hard to be online implemented. In this work, based on the most efficient operation point of engine, we transfer the energy optimization problem into the decision making of engine on/off, which greatly reduce the computation burden and is more practically applicable. Three rule-based engine on/off strategies, including the benchmark one that does not consider the thermal influences and two hysteresis strategies incorporating the thermal state, are compared through simulations under randomly generated driving profiles. Results verified that the proposed hysteresis strategies are feasible and the overall energy efficiency/economy can be enhanced by considering thermal influences in engine on/off decision.http://www.sciencedirect.com/science/article/pii/S2405844025001410Hybrid electric vehicleEnergy managementThermal dynamicsEngine on/off strategy |
| spellingShingle | Wei Wang Tielong Shen Engine on/off management with consideration of thermal dynamics for HEVs Heliyon Hybrid electric vehicle Energy management Thermal dynamics Engine on/off strategy |
| title | Engine on/off management with consideration of thermal dynamics for HEVs |
| title_full | Engine on/off management with consideration of thermal dynamics for HEVs |
| title_fullStr | Engine on/off management with consideration of thermal dynamics for HEVs |
| title_full_unstemmed | Engine on/off management with consideration of thermal dynamics for HEVs |
| title_short | Engine on/off management with consideration of thermal dynamics for HEVs |
| title_sort | engine on off management with consideration of thermal dynamics for hevs |
| topic | Hybrid electric vehicle Energy management Thermal dynamics Engine on/off strategy |
| url | http://www.sciencedirect.com/science/article/pii/S2405844025001410 |
| work_keys_str_mv | AT weiwang engineonoffmanagementwithconsiderationofthermaldynamicsforhevs AT tielongshen engineonoffmanagementwithconsiderationofthermaldynamicsforhevs |