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Endoreversible Modeling of a Hydraulic Recuperation System

Hybrid drive systems able to recover and reuse braking energy of the vehicle can reduce fuel consumption, air pollution and operating costs. Among them, hydraulic recuperation systems are particularly suitable for commercial vehicles, especially if they are already equipped with a hydraulic system....

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Autores principales: Masser, Robin, Hoffmann, Karl Heinz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7516859/
https://www.ncbi.nlm.nih.gov/pubmed/33286158
http://dx.doi.org/10.3390/e22040383
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author Masser, Robin
Hoffmann, Karl Heinz
author_facet Masser, Robin
Hoffmann, Karl Heinz
author_sort Masser, Robin
collection PubMed
description Hybrid drive systems able to recover and reuse braking energy of the vehicle can reduce fuel consumption, air pollution and operating costs. Among them, hydraulic recuperation systems are particularly suitable for commercial vehicles, especially if they are already equipped with a hydraulic system. Thus far, the investigation of such systems has been limited to individual components or optimizing their control. In this paper, we focus on thermodynamic effects and their impact on the overall systems energy saving potential using endoreversible thermodynamics as the ideal framework for modeling. The dynamical behavior of the hydraulic recuperation system as well as energy savings are estimated using real data of a vehicle suitable for application. Here, energy savings accelerating the vehicle around 10% and a reduction in energy transferred to the conventional disc brakes around 58% are predicted. We further vary certain design and loss parameters—such as accumulator volume, displacement of the hydraulic unit, heat transfer coefficients or pipe diameter—and discuss their influence on the energy saving potential of the system. It turns out that heat transfer coefficients and pipe diameter are of less importance than accumulator volume and displacement of the hydraulic unit.
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spelling pubmed-75168592020-11-09 Endoreversible Modeling of a Hydraulic Recuperation System Masser, Robin Hoffmann, Karl Heinz Entropy (Basel) Article Hybrid drive systems able to recover and reuse braking energy of the vehicle can reduce fuel consumption, air pollution and operating costs. Among them, hydraulic recuperation systems are particularly suitable for commercial vehicles, especially if they are already equipped with a hydraulic system. Thus far, the investigation of such systems has been limited to individual components or optimizing their control. In this paper, we focus on thermodynamic effects and their impact on the overall systems energy saving potential using endoreversible thermodynamics as the ideal framework for modeling. The dynamical behavior of the hydraulic recuperation system as well as energy savings are estimated using real data of a vehicle suitable for application. Here, energy savings accelerating the vehicle around 10% and a reduction in energy transferred to the conventional disc brakes around 58% are predicted. We further vary certain design and loss parameters—such as accumulator volume, displacement of the hydraulic unit, heat transfer coefficients or pipe diameter—and discuss their influence on the energy saving potential of the system. It turns out that heat transfer coefficients and pipe diameter are of less importance than accumulator volume and displacement of the hydraulic unit. MDPI 2020-03-26 /pmc/articles/PMC7516859/ /pubmed/33286158 http://dx.doi.org/10.3390/e22040383 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Masser, Robin
Hoffmann, Karl Heinz
Endoreversible Modeling of a Hydraulic Recuperation System
title Endoreversible Modeling of a Hydraulic Recuperation System
title_full Endoreversible Modeling of a Hydraulic Recuperation System
title_fullStr Endoreversible Modeling of a Hydraulic Recuperation System
title_full_unstemmed Endoreversible Modeling of a Hydraulic Recuperation System
title_short Endoreversible Modeling of a Hydraulic Recuperation System
title_sort endoreversible modeling of a hydraulic recuperation system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7516859/
https://www.ncbi.nlm.nih.gov/pubmed/33286158
http://dx.doi.org/10.3390/e22040383
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