Fuel economy analysis of series hybrid electric bus with idling stop strategy

Chen, Jingfu; Du, Jiuyu; Wu, Xiaogang

doi:10.1109/ifost.2014.6991140

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…Nevertheless, the ICE efficiency is high when the engine works close to the rated power [1]. For this reason the series architecture is mainly used on buses [2][3][4][5]. Since they perform missions which are repetitive and known beforehand, it makes it possible for the ICE to be sized according to the type of mission.…”

Section: Introductionmentioning

confidence: 99%

Series Architecture on Hybrid Electric Vehicles: A Review

et al. 2021

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The use of series architecture nowadays is mainly on hybrid buses. In comparison with series-parallel and parallel architectures, which are usually exploited on medium-size cars, the series architecture allows achieving internal combustion engine higher efficiency. The downside of this architecture, due to a double energy conversion (i.e., mechanical energy converted in electrical energy and electrical energy converted again in mechanical energy), is that additional losses are introduced. For this reason, the parallel and the series/parallel architectures were considered more suitable for hybrid medium-size cars. Nevertheless, the use of new technologies can change this scenario. Regarding storage systems, supercapacitors achieved a significant energy density, and they guarantee much higher efficiency than battery storage. Moreover, the use of wide-bandgap components for power electronic converters, such as silicon carbide devices, assure lower losses. In this scenario, the series architecture can become competitive on medium-size cars. This paper shows a review of various studies performed on this topic.

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Section: Introductionmentioning

confidence: 99%

Series Architecture on Hybrid Electric Vehicles: A Review

et al. 2021

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“…The increasing interest in sustainable mobility has led to the study and development of new hybrid architectures, which can be mainly divided in three main categories [1]: parallel [2][3][4][5][6], series/parallel (also known as power-split) [6][7][8][9][10][11][12][13][14], and series hybrid [15][16][17][18][19][20][21]. Passalacqua et al [22] proposed a new series architecture configuration for medium size cars, with a storage system based only on supercapacitors and they highlighted the benefits in terms of internal combustion engine (ICE) optimal working points.…”

Section: Introductionmentioning

confidence: 99%

Turbocompound Power Unit Modelling for a Supercapacitor-Based Series Hybrid Vehicle Application

et al. 2020

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In this paper, starting from the measurements available for a 2000 cm3 turbocharged diesel engine, an analytical model of the turbocharger is proposed and validated. The model is then used to extrapolate the efficiency of a power unit with a diesel engine combined with a turbocompound system. The obtained efficiency map is used to evaluate the fuel economy of a supercapacitor-based series hybrid vehicle equipped with the turbocompound power unit. The turbocompound model, in accordance with the studies available in the technical literature, shows that the advantages (in terms of efficiency increase) are significant at high loads. For this reason, turbocompound introduction allows a significant efficiency improvement in a series hybrid vehicle, where the engine always works at high-load. The fuel economy of the proposed vehicle is compared with other hybrid and conventional vehicle configurations.

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“…Regarding parallel architecture, this structure is mainly used on medium size cars and can be realized either with one electrical machine [3][4][5][6][7], two electrical machines and a planetary gearbox (also known as power split or series/parallel hybrid) [8][9][10][11][12][13][14] can be realized with a compound structured permanent-magnet motor [15]. As far as series architecture is concerned, this topology was mainly designed, until now, for urban bus applications [16][17][18]. However, innovations and developments in storage systems and power electronics may change this paradigm.…”

Section: Introductionmentioning

confidence: 99%

Supercapacitor Storage Sizing Analysis for a Series Hybrid Vehicle

et al. 2019

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The increasing interest in Hybrid Electric Vehicles led to the study of new powertrain structures. In particular, it was demonstrated in the technical literature how series architecture can be more efficient, compared to parallel one, if supercapacitors are used as storage system. Since supercapacitors are characterized by high efficiency and high power density, but have low specific energy, storage sizing is a critical point with this technology. In this study, a detailed analysis on the effect of supercapacitor storage sizing on series architecture was carried out. In particular, in series architecture, supercapacitor storage sizing influences both engine number of starts and the energy that can be stored during regenerative braking. The first aspect affects the comfort, whereas the second aspect directly influences powertrain efficiency. Vehicle model and Energy Management System were studied and simulations were carried out for different storage energy, in order to define the optimal sizing.

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Fuel economy analysis of series hybrid electric bus with idling stop strategy

Cited by 7 publications

References 5 publications

Series Architecture on Hybrid Electric Vehicles: A Review

Series Architecture on Hybrid Electric Vehicles: A Review

Turbocompound Power Unit Modelling for a Supercapacitor-Based Series Hybrid Vehicle Application

Supercapacitor Storage Sizing Analysis for a Series Hybrid Vehicle

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