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On the Efficiency of Mobile Hydraulic Power Packs Operating with New and Aged Eco-Friendly Fluids

Author

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  • Ornella Chiavola

    (Dipartimento di Ingegneria Industriale, Elettronica, e Meccanica (DIIEM), Roma TRE University, Via Vito Volterra 62, 00146 Rome, Italy)

  • Edoardo Frattini

    (Dipartimento di Ingegneria Industriale, Elettronica, e Meccanica (DIIEM), Roma TRE University, Via Vito Volterra 62, 00146 Rome, Italy)

  • Fulvio Palmieri

    (Dipartimento di Ingegneria Industriale, Elettronica, e Meccanica (DIIEM), Roma TRE University, Via Vito Volterra 62, 00146 Rome, Italy)

  • Ambra Fioravanti

    (Institute of Sciences and Technologies for Sustainable Energy and Mobility, National Research Council (STEMS-CNR), Via Canal Bianco 28, 44124 Ferrara, Italy)

  • Pietro Marani

    (Institute of Sciences and Technologies for Sustainable Energy and Mobility, National Research Council (STEMS-CNR), Via Canal Bianco 28, 44124 Ferrara, Italy)

Abstract

With the increasing environmental awareness, in many applications, ranging from agriculture to industry and logistics, a wider and wider use of eco-friendly fluids is desirable. Although the chemical and biological aspects related to environmental compatibility have been extensively investigated by industries and researchers for obvious environmental reasons, not much literature is available on the performance of hydraulic components and systems operating with eco-friendly fluids, especially on the possible degradation of performance due to fluid aging. This work is aimed at studying the influence of eco-friendly fluids on the performance of external gear pumps for compact mobile hydraulic power units, which are among the most widespread hydraulic devices in the world, for their cost-effective and flexible construction. Once the experimental set-up is implemented to be well representative of the hydraulic power packs’ typical arrangement, pump performance is investigated. Pump energy performance is obtained in terms of volumetric efficiency and torque efficiency. Alongside the traditional fluid, two types of eco-friendly fluid available in the market are tested. Once the comparison is complete, the investigations are devoted to highlighting the impact of fluid aging on the pump performance. The fluids were aged through 2000 h operation under heavy-duty thermo-mechanical stress on a separate set-up and, afterwards, the pump performance was tested again with aged fluids. The results allow the assessment of the influence of different fluids on pump performance and a comparison of the impact of new versus aged eco-friendly fluids. The eco-friendly fluids exert a significant effect on the pump energy profile. The pump overall efficiency increases, marking an up to 5% improvement, depending on the cases. Fluid aging is found to reduce the pump’s overall performance. This paper addresses the key points defining the pump performance and provides new information on the topic. The results are original and represent a fundamental contribution to define the best practices for energy and maintenance management of hydraulic systems and to foster the deployment of further studies on models and simulation tools to catch the effect of the fluid condition.

Suggested Citation

  • Ornella Chiavola & Edoardo Frattini & Fulvio Palmieri & Ambra Fioravanti & Pietro Marani, 2023. "On the Efficiency of Mobile Hydraulic Power Packs Operating with New and Aged Eco-Friendly Fluids," Energies, MDPI, vol. 16(15), pages 1-16, July.
  • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5681-:d:1205354
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    References listed on IDEAS

    as
    1. Ornella Chiavola & Edoardo Frattini & Simone Lancione & Fulvio Palmieri, 2021. "Operation Cycle of Diesel CR Injection Pump via Pressure Measurement in Piston Working Chamber," Energies, MDPI, vol. 14(17), pages 1-21, August.
    2. Paulina Szwemin & Wieslaw Fiebig, 2021. "The Influence of Radial and Axial Gaps on Volumetric Efficiency of External Gear Pumps," Energies, MDPI, vol. 14(15), pages 1-21, July.
    3. Daniele Pochi & Roberto Fanigliulo & Carlo Bisaglia & Maurizio Cutini & Renato Grilli & Laura Fornaciari & Monica Betto & Luigi Pari & Francesco Gallucci & Luigi Capuzzi & Angela Sagliano & Fulvio Pal, 2020. "Test Rig and Method for Comparative Evaluation of Conventional and Bio-Based Hydraulic Fluids and Lubricants for Agricultural Transmissions," Sustainability, MDPI, vol. 12(20), pages 1-20, October.
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