scholarly journals Development of a mathematic model for a variable displacement vane pump for engine oil

2012 ◽  
Vol 9 (4) ◽  
pp. 42-51 ◽  
Author(s):  
D.Q. Truong ◽  
K.K. Ahn ◽  
J.I. Yoon ◽  
J.S. Lee
Keyword(s):  
Mathematic Model ◽  
Engine Oil ◽  
Vane Pump ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement

Dynamic Modeling of a Variable Displacement Vane Pump Within an Engine Oil Circuit

2011 ◽  
Author(s):  
Bruce Geist ◽  
William Resh
Keyword(s):  
Operating Conditions ◽  
Engine Oil ◽  
Vane Pump ◽  
Pump Chamber ◽  
Chamber Volume ◽  
Performance Requirements ◽  
Oil Pump ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement ◽  
And Performance

Automakers and the car-buying public maintain a strong and continuing interest in enhanced vehicle efficiency. Ideally, adaptively controlled oil pumps supply only enough flow within an engine to satisfy its performance requirements. Any extra flow wastes energy. In order to better understand how to improve engine and engine oil circuit efficiency, and to assess pump stability, a detailed dynamic model of a variable displacement vane pump (VDVP) is developed. This detailed pump model is mated to a simplified engine oil circuit model. This marriage allows for a detailed prediction of pump response under various simulated engine operating conditions. The VDVP modeled here adapts its pump chamber volumes according to 1) the feedback oil pressure provided from the engine oil circuit and 2) according to the sizing and installed compression loading of an internal spring. Many phenomena such as internal leakage from one pump chamber volume to another, variable oil conditions such as aeration and viscosity, as well as variations in choice for the internal spring rate and preload can be investigated for their effects on oil pump behavior and performance within the simplified oil circuit.

A Study of the Internal Forces in a Variable-Displacement Vane-Pump—Part II: A Parametric Study

1986 ◽  
Vol 108 (2) ◽  
pp. 233-237 ◽  
Author(s):  
A. M. Karmel
Keyword(s):  
Parametric Study ◽  
Analytical Study ◽  
Design Criterion ◽  
Vane Pump ◽  
Continuous Components ◽  
Variable Capacity ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement ◽  
Internal Forces ◽  
Line Pressure

This is the second part of an analytical study of the internal forces in a variable-displacement vane-pump. It presents a parametric study of the forces and torques applied to the mechanism and the shaft of this pump, as functions of line pressure, the eccentricity, and the design geometry. It is shown that the continuous components of the torque and of the direction of the radial shaft-load vary as a sawtooth wave at twice the vane-frequency while the magnitude of the radial shaft-load varies as a square wave at vane-frequency. The design criterion developed in the first part of this study is used to demonstrate the elimination of the magnitude variations in the radial shaft-load. The intermittent components of the internal forces vary as a pulse train at vane frequency and may produce high-peak pressure pulses which must be closely controlled. The variable-capacity feature of variable-displacement vane-pumps has a significant effect on the torque applied to the mechanism, but only a secondary effect on the overall radial shaft-load.

scholarly journals Nonlinear Volume Flow Control of a Variable Displacement Vane Pump

PAMM ◽  
2015 ◽  
Vol 15 (1) ◽  
pp. 635-636 ◽  
Author(s):  
Marius Köster ◽  
Alexander Fidlin
Keyword(s):  
Flow Control ◽  
Volume Flow ◽  
Vane Pump ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement

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

2017 ◽  
Author(s):  
Massimo Rundo ◽  
Giorgio Altare
Keyword(s):  
Cfd Simulation ◽  
Dynamic Equilibrium ◽  
Experimental Tests ◽  
Flow Speed ◽  
Displacement Control ◽  
Vane Pump ◽  
Element Analysis ◽  
Transient Model ◽  
Variable Displacement Vane Pump ◽  
Variable Displacement

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.

Sign in / Sign up

Export Citation Format

Share Document