TY - JOUR AU - Heybroek, Kim AU - Sahlman, Mika PY - 2018/08/01 Y2 - 2024/03/29 TI - A hydraulic hybrid excavator based on multi-chamber cylinders and secondary control – design and experimental validation JF - International Journal of Fluid Power JA - TJFP VL - 19 IS - 2 SE - Original Article DO - 10.1080/14399776.2018.1447065 UR - https://journals.riverpublishers.com/index.php/IJFP/article/view/146 SP - 91-105 AB - <p>In this paper, a special type of multi-chamber cylinders along with secondary controlled hydraulic motors are key components in the design of a highly efficient hydraulic series hybrid system. The system is developed for and tested on a large excavator (30-ton class). The evaluated system supports potential and kinetic energy recovery and storage using hydraulic accumulators. Through proper sizing of components and sophisticated valve control, an energy-efficient flexible and robust hybrid system is achieved. The study describes how the demonstrator is tested in real truck loading cycles. A detailed energy analysis is also presented to explain the energy flow inside the hybrid system.</p> ER -