Adjustable linkage pump: Efficiency modeling and experimental validation

Shawn R Wilhelm, James D Van De Ven

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Variable displacement pumps are a key component to a variety of mobile and industrial hydraulic systems, yet the efficiency of existing pump architectures is poor at low displacement. As a solution to this issue, a new pump architecture is proposed that eliminates the planar hydrodynamic joints of a conventional architecture with rolling-element pin joints in an adjustable linkage. This new architecture uses an adjustable six-bar linkage that reaches true zero displacement and has the same top-dead-center (TDC) position regardless of displacement. In this work, the linkage kinematics and dynamics are discussed, an energy loss model is developed and used to drive design decisions of a first generation prototype, and experimental results are presented to validate the model. It is shown that this linkage-based, variable, positive displacement architecture shows promise as a highly efficient alternative to existing pump architectures across a wide range of displacements.

Original languageEnglish (US)
Article number031013
JournalJournal of Mechanisms and Robotics
Volume7
Issue number3
DOIs
StatePublished - Jan 1 2015

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Pumps
Energy dissipation
Kinematics
Hydrodynamics
Hydraulics

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Adjustable linkage pump : Efficiency modeling and experimental validation. / Wilhelm, Shawn R; Van De Ven, James D.

In: Journal of Mechanisms and Robotics, Vol. 7, No. 3, 031013, 01.01.2015.

Research output: Contribution to journalArticle

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