Optimal Integrated Emission Management through Variable Engine Calibration
In this work, the potential for improving the trade-off between fuel consumption and tailpipe NO<sub>x</sub> emissions through variable engine calibration (VEC) is demonstrated for both conventional and hybrid electric vehicles (HEV). First, a preoptimization procedure for the engine ope...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/22/7606 |
| _version_ | 1797510545198284800 |
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| author | Johannes Ritzmann Oscar Chinellato Richard Hutter Christopher Onder |
| author_facet | Johannes Ritzmann Oscar Chinellato Richard Hutter Christopher Onder |
| author_sort | Johannes Ritzmann |
| collection | DOAJ |
| description | In this work, the potential for improving the trade-off between fuel consumption and tailpipe NO<sub>x</sub> emissions through variable engine calibration (VEC) is demonstrated for both conventional and hybrid electric vehicles (HEV). First, a preoptimization procedure for the engine operation is proposed to address the challenge posed by the large number of engine control inputs. By excluding infeasible and suboptimal operation offline, an engine model is developed that can be evaluated efficiently during online optimization. Next, dynamic programming is used to find the optimal trade-off between fuel consumption and tailpipe NO<sub>x</sub> emissions for various vehicle configurations and driving missions. Simulation results show that for a conventional vehicle equipped with VEC and gear optimization run on the worldwide harmonized light vehicles test cycle (WLTC), the fuel consumption can be reduced by 5.4% at equivalent NO<sub>x</sub> emissions. At equivalent fuel consumption, the NO<sub>x</sub> emissions can be reduced by 80%. For an HEV, the introduction of VEC, in addition to the optimization of the torque split and the gear selection, drastically extended the achievable trade-off between fuel consumption and tailpipe NO<sub>x</sub> emissions in simulations. Most notably, the region with very low NO<sub>x</sub> emissions could only be reached with VEC. |
| first_indexed | 2024-03-10T05:32:55Z |
| format | Article |
| id | doaj.art-da367ecb716e422d92d068670b488631 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T05:32:55Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-da367ecb716e422d92d068670b4886312023-11-22T23:10:46ZengMDPI AGEnergies1996-10732021-11-011422760610.3390/en14227606Optimal Integrated Emission Management through Variable Engine CalibrationJohannes Ritzmann0Oscar Chinellato1Richard Hutter2Christopher Onder3Department of Mechanical Engineering and Process Control, ETH Zürich, 8092 Zürich, SwitzerlandFPT Motorenforschung AG, 9320 Arbon, SwitzerlandFPT Motorenforschung AG, 9320 Arbon, SwitzerlandDepartment of Mechanical Engineering and Process Control, ETH Zürich, 8092 Zürich, SwitzerlandIn this work, the potential for improving the trade-off between fuel consumption and tailpipe NO<sub>x</sub> emissions through variable engine calibration (VEC) is demonstrated for both conventional and hybrid electric vehicles (HEV). First, a preoptimization procedure for the engine operation is proposed to address the challenge posed by the large number of engine control inputs. By excluding infeasible and suboptimal operation offline, an engine model is developed that can be evaluated efficiently during online optimization. Next, dynamic programming is used to find the optimal trade-off between fuel consumption and tailpipe NO<sub>x</sub> emissions for various vehicle configurations and driving missions. Simulation results show that for a conventional vehicle equipped with VEC and gear optimization run on the worldwide harmonized light vehicles test cycle (WLTC), the fuel consumption can be reduced by 5.4% at equivalent NO<sub>x</sub> emissions. At equivalent fuel consumption, the NO<sub>x</sub> emissions can be reduced by 80%. For an HEV, the introduction of VEC, in addition to the optimization of the torque split and the gear selection, drastically extended the achievable trade-off between fuel consumption and tailpipe NO<sub>x</sub> emissions in simulations. Most notably, the region with very low NO<sub>x</sub> emissions could only be reached with VEC.https://www.mdpi.com/1996-1073/14/22/7606variable engine calibrationpollutant emissionssupervisory controloptimal controlhybrid electric vehicle |
| spellingShingle | Johannes Ritzmann Oscar Chinellato Richard Hutter Christopher Onder Optimal Integrated Emission Management through Variable Engine Calibration Energies variable engine calibration pollutant emissions supervisory control optimal control hybrid electric vehicle |
| title | Optimal Integrated Emission Management through Variable Engine Calibration |
| title_full | Optimal Integrated Emission Management through Variable Engine Calibration |
| title_fullStr | Optimal Integrated Emission Management through Variable Engine Calibration |
| title_full_unstemmed | Optimal Integrated Emission Management through Variable Engine Calibration |
| title_short | Optimal Integrated Emission Management through Variable Engine Calibration |
| title_sort | optimal integrated emission management through variable engine calibration |
| topic | variable engine calibration pollutant emissions supervisory control optimal control hybrid electric vehicle |
| url | https://www.mdpi.com/1996-1073/14/22/7606 |
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