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Energy Efficiency Comparison between Hydraulic Hybrid and Hybrid Electric Vehicles

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  • Jia-Shiun Chen

    (Department of Vehicle Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Road, Taipei 10608, Taiwan)

Abstract

Conventional vehicles tend to consume considerable amounts of fuel, which generates exhaust gases and environmental pollution during intermittent driving cycles. Therefore, prospective vehicle designs favor improved exhaust emissions and energy consumption without compromising vehicle performance. Although pure electric vehicles feature high performance and low pollution characteristics, their limitations are their short driving range and high battery costs. Hybrid electric vehicles (HEVs) are comparatively environmentally friendly and energy efficient, but cost substantially more compared with conventional vehicles. Hydraulic hybrid vehicles (HHVs) are mainly operated using engines, or using alternate combinations of engine and hydraulic power sources while vehicles accelerate. When the hydraulic system accumulator is depleted, the conventional engine reengages; concurrently, brake-regenerated power is recycled and reused by employing hydraulic motor–pump modules in circulation patterns to conserve fuel and recycle brake energy. This study adopted MATLAB Simulink to construct complete HHV and HEV models for backward simulations. New European Driving Cycles were used to determine the changes in fuel economy. The output of power components and the state-of-charge of energy could be retrieved. Varying power component models, energy storage component models, and series or parallel configurations were combined into seven different vehicle configurations: the conventional manual transmission vehicle, series hybrid electric vehicle, series hydraulic hybrid vehicle, parallel hybrid electric vehicle, parallel hydraulic hybrid vehicle, purely electric vehicle, and hydraulic-electric hybrid vehicle. The simulation results show that fuel consumption was 21.80% lower in the series hydraulic hybrid vehicle compared to the series hybrid electric vehicle; additionally, fuel consumption was 3.80% lower in the parallel hybrid electric vehicle compared to the parallel hydraulic hybrid vehicle. Furthermore, the hydraulic–electric hybrid vehicles consumed 11.4% less electricity than the purely electric vehicle did. The simulations indicated that hydraulic-electric hybrid vehicle could provide the best energy cost among all the configurations studied.

Suggested Citation

  • Jia-Shiun Chen, 2015. "Energy Efficiency Comparison between Hydraulic Hybrid and Hybrid Electric Vehicles," Energies, MDPI, vol. 8(6), pages 1-27, May.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:6:p:4697-4723:d:50138
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    References listed on IDEAS

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    1. Doucette, Reed T. & McCulloch, Malcolm D., 2011. "Modeling the prospects of plug-in hybrid electric vehicles to reduce CO2 emissions," Applied Energy, Elsevier, vol. 88(7), pages 2315-2323, July.
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    2. Keun-Young Yoon & Soo-Whang Baek, 2019. "Robust Design Optimization with Penalty Function for Electric Oil Pumps with BLDC Motors," Energies, MDPI, vol. 12(1), pages 1-14, January.
    3. Kwon, Hyukjoon & Sprengel, Michael & Ivantysynova, Monika, 2016. "Thermal modeling of a hydraulic hybrid vehicle transmission based on thermodynamic analysis," Energy, Elsevier, vol. 116(P1), pages 650-660.
    4. Linda Barelli & Gianni Bidini & Federico Gallorini & Francesco Iantorno & Nicola Pane & Panfilo Andrea Ottaviano & Lorenzo Trombetti, 2018. "Dynamic Modeling of a Hybrid Propulsion System for Tourist Boat," Energies, MDPI, vol. 11(10), pages 1-17, September.
    5. Gianluca Marinaro & Zhuangying Xu & Zhengpu Chen & Chenxi Li & Yizhou Mao & Andrea Vacca, 2018. "The PurdueTracer: An Energy-Efficient Human-Powered Hydraulic Bicycle with Flexible Operation and Software Aids," Energies, MDPI, vol. 11(2), pages 1-24, January.
    6. Barbosa, Társis Prado & Eckert, Jony Javorski & Roso, Vinícius Rückert & Pujatti, Fabrício José Pacheco & da Silva, Leonardo Adolpho Rodrigues & Horta Gutiérrez, Juan Carlos, 2021. "Fuel saving and lower pollutants emissions using an ethanol-fueled engine in a hydraulic hybrid passengers vehicle," Energy, Elsevier, vol. 235(C).
    7. Cheng-Ta Chung & Chien-Hsun Wu & Yi-Hsuan Hung, 2018. "Effects of Electric Circulation on the Energy Efficiency of the Power Split e-CVT Hybrid Systems," Energies, MDPI, vol. 11(9), pages 1-15, September.
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    10. He, Xiangyu & Liu, Hao & He, Shanghong & Hu, Bili & Xiao, Guangxin, 2019. "Research on the energy efficiency of energy regeneration systems for a battery-powered hydrostatic vehicle," Energy, Elsevier, vol. 178(C), pages 400-418.
    11. Hsiu-Ying Hwang & Tian-Syung Lan & Jia-Shiun Chen, 2020. "Optimization and Application for Hydraulic Electric Hybrid Vehicle," Energies, MDPI, vol. 13(2), pages 1-17, January.
    12. Ryszard Dindorf & Jakub Takosoglu & Piotr Wos, 2023. "Review of Hydro-Pneumatic Accumulator Models for the Study of the Energy Efficiency of Hydraulic Systems," Energies, MDPI, vol. 16(18), pages 1-45, September.
    13. Chien-Hsun Wu & Yong-Xiang Xu, 2019. "The Optimal Control of Fuel Consumption for a Heavy-Duty Motorcycle with Three Power Sources Using Hardware-in-the-Loop Simulation," Energies, MDPI, vol. 13(1), pages 1-16, December.
    14. Wei Zhang & Jixin Wang & Shaofeng Du & Hongfeng Ma & Wenjun Zhao & Haojie Li, 2019. "Energy Management Strategies for Hybrid Construction Machinery: Evolution, Classification, Comparison and Future Trends," Energies, MDPI, vol. 12(10), pages 1-26, May.
    15. Brol, Sebastian & Czok, Rafał & Mróz, Piotr, 2020. "Control of energy conversion and flow in hydraulic-pneumatic system," Energy, Elsevier, vol. 194(C).
    16. Kegang Zhao & Zhihao Liang & Yanjun Huang & Hong Wang & Amir Khajepour & Yuke Zhen, 2017. "Research on a Novel Hydraulic/Electric Synergy Bus," Energies, MDPI, vol. 11(1), pages 1-18, December.
    17. Singh, Krishna Veer & Bansal, Hari Om & Singh, Dheerendra, 2021. "Fuzzy logic and Elman neural network tuned energy management strategies for a power-split HEVs," Energy, Elsevier, vol. 225(C).
    18. Israa Azzam & Keith Pate & Jose Garcia-Bravo & Farid Breidi, 2022. "Energy Savings in Hydraulic Hybrid Transmissions through Digital Hydraulics Technology," Energies, MDPI, vol. 15(4), pages 1-24, February.

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