Abstract
In this paper, the results of the analysis of the forces acting on vanes in a double-acting vane pump with an integrated electric drive have been presented. In the new motor pump unit, the pump is assembled inside the rotor of the electric motor. A dynamic model representing the vane movement has been developed considering the impact of pressure load distribution, vane support forces and friction forces. The loss of contact between the vane head and the cam ring lead to the noise and reduction of the volumetric pump efficiency. The dynamic model which describes the vane motion and contact between the vane tip and cam ring has been solved using MATLAB software. The influence of load distribution, pump design and operational parameters on the vane dynamics has been analysed.
Highlights
The new design of the vane pump integrated with the electric motor [1] is based on the kinematic inversion and assumes that the rotor of the electric motor is the outer casing of the pump
This paper describes the forces acting on the vanes in a new design of the vane pump with an integrated electric drive which is important for the description of vane motion
A dynamical model for the determination of vane motion was developed, with the help of which it is possible to determine the causes of vane detachment from the cam ring
Summary
The new design of the vane pump integrated with the electric motor [1] is based on the kinematic inversion and assumes that the rotor of the electric motor is the outer casing of the pump. Since the pump shaft and motor shaft are not connected, the drive torque is transmitted due to the formfit connection between the rotor of the electric motor and the pump cam ring. Wasel at all in [9] developed a (Thermo-Elasto-Hydrodynamic Lubrication) TEHL-Model was developed to calculate the friction forces between vane tip and cam ring in oil vane pumps. This paper describes the forces acting on the vanes in a new design of the vane pump with an integrated electric drive which is important for the description of vane motion. The final part describes the results of experimental studies confirming the results obtained on the basis of the model
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