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Energy Efficient Hydraulics: System solutions for loss minimization
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, Faculty of Science & Engineering.
2015 (Swedish)In: Hydraulikdagar i Linköping 2015, 2015Conference paper (Other academic)
Abstract [en]

The development of hydraulic components and systems concept has in recent decades been a clear focus on

energy efficiency and controllability. With today's components, such as electrically-driven pumps, motors and

valves, and electronic control systems have hydraulic technology flexibility significantly increased, which has

provided unique opportunities to build energy-efficient hydraulic system with good controllability. The

implementation of energy efficient systems is not simple, as it requires that the system concept closely matched

to the machine / vehicle primary power source, cycle and performance requirements, and that the hydraulic

system is integrated with the system's mechanical units so that frictional losses are minimized.

This article analyses some system solutions for mobile and industrial applications with regard to their energy

saving potential. Conventional systems are compared with energy-efficient systems and both valve and

pump-controlled mobile systems studied. Industrial system solutions discussed, especially the energy saving

potential of modern supply units offer. Use of accumulators for energy storage and energy recovery as well as

the hydraulic impact on system efficiency, are further examples of areas treated. Analysis shows that a plurality

of applications has a power budget potential of 20 - 50%, compared with the conventional system. In some

industrial systems can supply-units with speed-controlled fixed pumps and accumulator battery providing

energy savings up to 80%.

Place, publisher, year, edition, pages
National Category
Mechanical Engineering
URN: urn:nbn:se:liu:diva-126664OAI: diva2:916150
The National Conference on Fluid Power, "Hydraulikdagar'15" Linköping, Sweden, March 16-17, 2015
Available from: 2016-04-01 Created: 2016-04-01 Last updated: 2016-04-01

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Rydberg, Karl-Erik
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