Mode Switching and Energy Recuperation in Open-Circuit Pump Control
2007 (English)In: The 10th Scandinavian International Conference on Fluid Power, Tampere, Finland, Tampere, Finland: Tampere University of Technology , 2007, 197-209 p.Conference paper (Refereed)
Today´s mobile machines most often contain hydraulic valve controlled drives in an open loop circuit. For the purpose of saving energy, the constant pressure pumps have in the past frequently been replaced by load-sensing pumps and load-sensing valves. However, considering applications where the load is helped by the gravitational force, even these hydraulic systems often suffer from poor efficiency. In this article, a novel pump-controlled hydraulic system is studied where energy recuperation from lowering motions is posssible. The pumps are fully displaceable in both directions, working as motors when lowering loads. The amount of recuperated energy is highly dependent of the chosen control strategy, the hydromechanical properties as well as the target application. Furthermore, the article describes how valve design becomes an important feature in an attempt to reach high efficiency and machine operability.
Place, publisher, year, edition, pages
Tampere, Finland: Tampere University of Technology , 2007. 197-209 p.
Pump control open circuit energy efficiency energy recuperation
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:liu:diva-16075OAI: oai:DiVA.org:liu-16075DiVA: diva2:133010