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Towards Resistance-free Hydraulics in Construction Machinery
Volvo Construction Equipment, Sweden.ORCID iD: 0000-0001-6452-2746
Innas BV, Netherlands.
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, The Institute of Technology.
2012 (English)In: 8th International Fluid Power Conference, Dresden: Dresdner Verein zur Förderung der Fluidtechnik , 2012, Vol. 2, 123-138 p.Conference paper, Published paper (Refereed)
Abstract [en]

The topic of resistance-free motion control refers to solutions that minimize or completely eliminate the need for proportional valves, hence avoiding the throttling losses associated with metering. Previous research by the authors shows how a secondary control system could be used to improve energy efficiency in construction machines. The proposed solution uses hydraulic transformers, powered by a common pressure rail system driving both the linear work implements and the rotary drives of a propulsion system in a wheel loader. An emphasis in this paper is on the sizing aspects of transformer-based system design. The solution under special observation enables the use of smaller transformers utilizing the differential cylinder as a two-stage gearbox by means of “short-circuiting” its two cylinder chambers. The results and outlook from this study touch on how state-of-the-art secondary control systems could improve the energy efficiency of future construction machinery and suggest potential areas of improvement.

Place, publisher, year, edition, pages
Dresden: Dresdner Verein zur Förderung der Fluidtechnik , 2012. Vol. 2, 123-138 p.
National Category
Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-132927OAI: oai:DiVA.org:liu-132927DiVA: diva2:1051345
Conference
8th International Fluid Power Conference, Dresden, March 26-28, 2012
Funder
Swedish Energy Agency, P32064-1
Available from: 2016-12-01 Created: 2016-12-01 Last updated: 2016-12-07Bibliographically approved

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Citation style
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