Optimization of Mechanical Efficiency Models for 2D Piston Pumps with a Stacked Taper Roller Set

Since the clearance between the guide rail and the roller reduces the efficiency of the 2D pump, this paper proposes a novel 2D piston pump with stacked taper roller sets to eliminate the effect of the clearance. The structure of the 2D pump is introduced, and the mathematical model of the torque an...

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Bibliographic Details
Published in:Machines (Basel) 2022-03, Vol.10 (3), p.180
Main Authors: Wang, Heyuan, Tong, Chengwei, Ruan, Chuantan, Ding, Chuan, Li, Sheng, Ruan, Jian
Format: Article
Language:English
Subjects:
2D piston pump
bilateral force model
Clearances
Coefficient of friction
Contact pressure
Efficiency
experimental research
Guide rails
High speed
Hydraulics
Mathematical models
Mechanical efficiency
Optimization
Piston pumps
Piston rings
Rolling resistance
Sliding friction
Tapering
Two dimensional models
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Summary:Since the clearance between the guide rail and the roller reduces the efficiency of the 2D pump, this paper proposes a novel 2D piston pump with stacked taper roller sets to eliminate the effect of the clearance. The structure of the 2D pump is introduced, and the mathematical model of the torque and the mechanical efficiency of the bilateral force on the guide rail are established and analyzed. The model takes into account the change in the oil viscosity, the spatial angle and the oil churning loss. A test rig was built to test the mechanical efficiency under different operating conditions. The unilateral and bilateral force models of the guide rail were compared, which proved that the bilateral force model of the guide rail can predict the mechanical efficiency more accurately than the unilateral force model. In the case of high load pressure, there was a clearance between the test results and the model calculation results. It is speculated that the main reason for this is that the greater oil pressure causes the size of the contact area between the two taper rollers and between the taper roller and the guide rail to become larger. The resulting rolling friction coefficient becomes larger, which affects the mechanical efficiency.
ISSN:2075-1702
2075-1702
DOI:10.3390/machines10030180