Carmine Conte
Analysis and control of high efficient electro-hydraulic solutions for the actuation systems of off-road vehicles.
Rel. Luigi Mazza, Andrea Vacca. Politecnico di Torino, Corso di laurea magistrale in Mechatronic Engineering (Ingegneria Meccatronica), 2024
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Abstract
The transition to cleaner technologies, such as electrified systems in off-road vehicles, is crucial for reducing greenhouse gas emissions and promoting sustainable practices. This shift toward electrification is driving advancements in dedicated electrified hydraulic actuation systems. Traditional centralized fluid power architectures remain popular for their cost-effectiveness, power density, and reliability. However, the increasing demand for lower emissions is raising interest in electro-hydraulic actuators. By adopting individualization strategies, the overall efficiency of hydraulic systems, generally under 30%, can be increased through reduced throttling losses and the ability to recover energy during assistive loads. This capability not only improves transmission efficiency but also leads to lower fuel consumption, making EHAs an appealing alternative for meeting stringent emission regulations.
This study explores two types of EHA architectures: an open-circuit design that connects directly to the tank, and a closed-circuit design where the differential volume of the linear actuator is stored and supplied by an accumulator
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