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Comparative energy analysis of a load sensing system and a zonal hydraulics for a 9-tonne excavator

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Article number39
Number of pages19
Issue number2
Publication statusPublished - 2020
Publication typeA1 Journal article-refereed


With the rising demand for energy efficiency, displacement-controlled or so-called pumpcontrolled systems have become an attractive research topic for applications in construction machinery and other off-road vehicles. Pump-controlled systems can be implemented with electro-hydrostatic actuators as electro-hydraulic zones, which are located next to the end actuator as a replacement for the traditional valve-controlled hydraulic actuation systems. In this paper a 9-tonne class excavator is utilized as a study case. A mathematical model of the conventional machine, validated with tests carried out on both the excavator and the single hydraulic components, was previously developed within the Simcenter AMESim


  • Electro-hydrostatic actuator, Energy saving, Excavator, Load sensing, Pump-controlled systems, Zonal hydraulics

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Field of science, Statistics Finland

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