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research-article

Lumped Parameter and Three-Dimensional CFD Simulation of a Variable Displacement Vane Pump for Engine Lubrication

[+] Author and Article Information
Massimo Rundo

Politecnico di Torino, Department of Energy, Turin, 10129, Italy
massimo.rundo@polito.it

Giorgio Altare

Politecnico di Torino, Department of Energy, Turin, 10129, Italy
giorgio.altare@polito.it

1Corresponding author.

ASME doi:10.1115/1.4038761 History: Received August 11, 2017; Revised December 10, 2017

Abstract

The paper describes the modelling and the experimental tests of a variable displacement vane pump for engine lubrication. The approach used for the simulation has involved 3D commercial tools for tuning a 0D customized model implemented in the LMS Amesim® environment. Different leakage paths are considered and the axial clearances are variable to take into account the deformation of the pump cover, calculated through a finite element analysis with ANSYS®. The vane tip clearances are calculated as function of the dynamic equilibrium equation of the vanes. The displacement control takes into account the internal forces on the stator due to the pressure in all variable chambers and to the contact force exerted by the vanes. The discharge coefficients in the resistive components have been tuned by means of a complete 3D transient model of the pump built with PumpLinx®. The tuned 0D model has been proved to be reliable for the determination of the steady-state flow-speed and flow-pressure curves, with a correct estimation of the internal leakages and of the pressure imposed by the displacement control. The pump has been also tested using a simplified circuit and a fair agreement has been found in the evaluation of the delivery pressure ripple.

Copyright (c) 2017 by ASME
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