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 language | English (US) |
|---|---|
| Article number | 031013 |
| Journal | Journal of Mechanisms and Robotics |
| Volume | 7 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jan 1 2015 |
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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 journal › Article
}
TY - JOUR
T1 - Adjustable linkage pump
T2 - Efficiency modeling and experimental validation
AU - Wilhelm, Shawn R
AU - Van De Ven, James D
PY - 2015/1/1
Y1 - 2015/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84994683570&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84994683570&partnerID=8YFLogxK
U2 - 10.1115/1.4028293
DO - 10.1115/1.4028293
M3 - Article
VL - 7
JO - Journal of Mechanisms and Robotics
JF - Journal of Mechanisms and Robotics
SN - 1942-4302
IS - 3
M1 - 031013
ER -