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Mode Shifting in Hybrid Hydromechanical Transmissions
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, Faculty of Science & Engineering. Volvo Construction Equipment.
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2315-0680
2015 (English)In: ASME/BATH 2015 Symposium on Fluid Power and Motion Control, ASME Press, 2015, 13- p.Conference paper (Refereed)
Abstract [en]

Demands for low cost sustainable solutions have increased the use of and interest in complex hydromechanical transmissions for heavy off-road vehicles. In transmissions with multiplemodes, an important condition is to maintain the tractive force during the mode shifting event. For hybrid hydromechanical transmissions, with a direct connection to a hydraulic accumulator, the impressed system pressure caused by the hydraulic accumulator has not yet been observed to interfere with this condition. In this paper, a black box model approach is used to modify the hydraulic system after obtaining knowledge regarding how it is affected by a mode shift. A comparative study is carried out where a full vehicle model of a mobile working machine is simulated with two different hydraulic systems. The results show that different system solutions imply different demands on the included components, and that the mode shifting event is not a negligible factor in heavy hydraulic hybrid vehicles.

Place, publisher, year, edition, pages
ASME Press, 2015. 13- p.
Keyword [en]
Mode shifting, hydromechanical transmissions, fluid power, heavy construction machinery
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:liu:diva-126556DOI: 10.1115/FPMC2015-9583ISI: 000373970500045ISBN: 978-0-7918-5723-6OAI: oai:DiVA.org:liu-126556DiVA: diva2:915457
Conference
ASME/BATH 2015 Symposium on Fluid Power and Motion Control, Chicago, Illinois, USA, October 12–14, 2015
Projects
Research on Hydromechanical Transmissions and Hybrid Motion systems, RHYTHM
Funder
Swedish Energy Agency, P39367-1
Available from: 2016-03-30 Created: 2016-03-30 Last updated: 2016-05-12

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Publisher's full texthttp://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2481647&resultClick=3

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Larsson, L. ViktorPettersson, KarlKrus, Petter
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