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...

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Autores principales:	Johannes Ritzmann, Oscar Chinellato, Richard Hutter, Christopher Onder
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	variable engine calibration pollutant emissions supervisory control optimal control hybrid electric vehicle Technology T
Acceso en línea:	https://doaj.org/article/da367ecb716e422d92d068670b488631
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spelling	oai:doaj.org-article:da367ecb716e422d92d068670b4886312021-11-25T17:27:09ZOptimal Integrated Emission Management through Variable Engine Calibration10.3390/en142276061996-1073https://doaj.org/article/da367ecb716e422d92d068670b4886312021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7606https://doaj.org/toc/1996-1073In 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.Johannes RitzmannOscar ChinellatoRichard HutterChristopher OnderMDPI AGarticlevariable engine calibrationpollutant emissionssupervisory controloptimal controlhybrid electric vehicleTechnologyTENEnergies, Vol 14, Iss 7606, p 7606 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	variable engine calibration pollutant emissions supervisory control optimal control hybrid electric vehicle Technology T
spellingShingle	variable engine calibration pollutant emissions supervisory control optimal control hybrid electric vehicle Technology T Johannes Ritzmann Oscar Chinellato Richard Hutter Christopher Onder Optimal Integrated Emission Management through Variable Engine Calibration
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.
format	article
author	Johannes Ritzmann Oscar Chinellato Richard Hutter Christopher Onder
author_facet	Johannes Ritzmann Oscar Chinellato Richard Hutter Christopher Onder
author_sort	Johannes Ritzmann
title	Optimal Integrated Emission Management through Variable Engine Calibration
title_short	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_sort	optimal integrated emission management through variable engine calibration
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/da367ecb716e422d92d068670b488631
work_keys_str_mv	AT johannesritzmann optimalintegratedemissionmanagementthroughvariableenginecalibration AT oscarchinellato optimalintegratedemissionmanagementthroughvariableenginecalibration AT richardhutter optimalintegratedemissionmanagementthroughvariableenginecalibration AT christopheronder optimalintegratedemissionmanagementthroughvariableenginecalibration
_version_	1718412379194130432

Optimal Integrated Emission Management through Variable Engine Calibration

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