Energy Efficient Fluid Power System for Mobile Machines with Open-centre Characteristics
2014 (English)In: 9th JFPS International Symposium on Fluid Power. Matsue, Japan, 28-31 October 2014, The Japan Fluid Power System Society , 2014, 452-459 p.Conference paper (Other academic)
This paper presents a flexible and energy efficient system solution which mimics the behaviour of an open-centre system. An electro-hydraulic variable displacement pump and closed-centre valves are used. Instead of having a flow in the open-centre gallery, that flow is calculated using a pressure sensor and a valve model. The variable pump is then controlled in order to only deliver the flow that would go to the actual loads. It is also possible for the operator to decide how much load dependency there should be. The extreme case is not having any load dependency at all, resulting in a system where the pump displacement setting is controlled according to the sum of all requested load flows. It is thus possible to realize a system design with open-centre characteristics, a flow control system or something in between. Each operator can thereby get their optimal control characteristic while having high energy efficiency.
Place, publisher, year, edition, pages
The Japan Fluid Power System Society , 2014. 452-459 p.
Mobile hydraulics, energy efficiency, dynamics, damping
IdentifiersURN: urn:nbn:se:liu:diva-111819ISBN: 4-931070-10-8OAI: oai:DiVA.org:liu-111819DiVA: diva2:760718
9th JFPS International Symposium on Fluid Power, Shimane, Japan, 28-31 October 2014