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Multi-Point-of-View Energy Loss Analysis in a Refuse Truck Hydraulic System

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  • Luis Javier Berne

    (CATMech, Department of Fluid Mechanics, Universitat Politecnica de Catalunya, Colom 7, 08222 Terrassa, Spain)

  • Gustavo Raush

    (CATMech, Department of Fluid Mechanics, Universitat Politecnica de Catalunya, Colom 7, 08222 Terrassa, Spain)

  • Pedro Javier Gamez-Montero

    (CATMech, Department of Fluid Mechanics, Universitat Politecnica de Catalunya, Colom 7, 08222 Terrassa, Spain)

  • Pedro Roquet

    (ROQCAR SL, Antonio Figueras 68, 08551 Tona, Spain)

  • Esteban Codina

    (CATMech, Department of Fluid Mechanics, Universitat Politecnica de Catalunya, Colom 7, 08222 Terrassa, Spain)

Abstract

In recent years, much research has focused on reducing the power consumption of mobile hydraulic machines due to rising fuel costs, regulations on combustion engine emissions and the need to reduce the size and weight of the storage devices in hybrid drives. Current approaches to improve the energy efficiency of a hydraulic system can be classified into four basic groups: reduction of the energy demand, recovery of part of the supplied energy (ERS systems), regeneration of part of the supplied energy and reuse of the recovered and regenerated energy (hybrid systems). Today’s mobile hydraulic systems are often complex, perform different tasks and work under different load conditions, which makes it difficult to analyse energy losses. A study of the energy losses of a hydraulic system from different points of view, such as an energy balance for a complete machine cycle, an analysis of the individual cycle phases and a power analysis for the different operation quadrants of the actuators, can give an global picture of the energy losses, being very useful to rate its energy efficiency, identify main power losses and decide which of the different energy-saving techniques to apply. This paper describes the data collection process, its analysis from various points of view and the summary of the results in easy to understand charts as useful tools to identify and quantify the main energy losses. Only system architecture losses are considered. Losses in the ICE engine or the electric motor, hydraulic pump losses and mechanical losses are outside the scope of this study.

Suggested Citation

  • Luis Javier Berne & Gustavo Raush & Pedro Javier Gamez-Montero & Pedro Roquet & Esteban Codina, 2021. "Multi-Point-of-View Energy Loss Analysis in a Refuse Truck Hydraulic System," Energies, MDPI, vol. 14(9), pages 1-24, May.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:9:p:2707-:d:550922
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    References listed on IDEAS

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    1. Milos Vukovic & Roland Leifeld & Hubertus Murrenhoff, 2017. "Reducing Fuel Consumption in Hydraulic Excavators—A Comprehensive Analysis," Energies, MDPI, vol. 10(5), pages 1-25, May.
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    Cited by:

    1. Pedro Roquet & Gustavo Raush & Luis Javier Berne & Pedro-Javier Gamez-Montero & Esteban Codina, 2022. "Energy Key Performance Indicators for Mobile Machinery," Energies, MDPI, vol. 15(4), pages 1-16, February.
    2. Luis Javier Berne & Gustavo Raush & Pedro Roquet & Pedro-Javier Gamez-Montero & Esteban Codina, 2022. "Graphic Method to Evaluate Power Requirements of a Hydraulic System Using Load-Holding Valves," Energies, MDPI, vol. 15(13), pages 1-23, June.

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