Revealing the influence of structural and operational parameters of a hydrostatic bearing in a gear-type fuel pump on its main characteristics

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.277755

Keywords:

hydrostatic bearing, gear pump, carrying capacity, Reynolds equation, flow rate balance

Abstract

The object of this study is hydrostatic processes in the sliding supports of gear-type fuel pumps.

The problem solved was the influence of the structural and operational parameters of hydrostatic bearings of the fuel pump on their static characteristics. The carrying capacity and consumption of the lubricant were considered as static characteristics. The characterization was based on the function of distributing the pressure in the lubricant layer. It was determined from the joint solution of the Reynolds equations and the balance of costs. The carrying capacity of the bearing was determined by the numerical integration of the pressure distribution function in the lubricant layer. The lubricant consumption was determined by the calculated pressures in the chambers. Variants of the working surface of the bearing with two and three carrying chambers were considered. Due to the fact that the load in the pump acts in one direction during operation, the scheme of the working surface of the bearing with two carrying chambers was adopted. The fluid consumption of such a bearing was less compared to a bearing with three carrying chambers. One of the parameters that significantly affect the carrying capacity of the bearing is the diameter of the nozzle installed at the inlet to the chambers.

It has been established that the dependence of the carrying capacity of a hydrostatic bearing on the diameter of the nozzle is nonlinear. With an increase in the diameter of the nozzle from 1 mm to 2.3 mm, the carrying capacity of the bearing increased by about 2.83 times. The extraction of fuel for the operation of the hydrostatic bearing was 1 % of the fuel pumped by the pump.

The results make it possible to recommend hydrostatic bearings as shaft supports for gear-type fuel pumps and can be used for practical calculations

Author Biography

Vladimir Nazin, National Aerospace University "Kharkiv Aviation Institute"

Doctor of Technical Sciences

Department of Theoretical Mechanics, Mechanical Engineering and Robotic Mechanical Systems

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Revealing the influence of structural and operational parameters of a hydrostatic bearing in a gear-type fuel pump on its main characteristics

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Published

2023-04-28

How to Cite

Nazin, V. (2023). Revealing the influence of structural and operational parameters of a hydrostatic bearing in a gear-type fuel pump on its main characteristics. Eastern-European Journal of Enterprise Technologies, 2(1 (122), 92–98. https://doi.org/10.15587/1729-4061.2023.277755

Issue

Vol. 2 No. 1 (122) (2023): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2023 Vladimir Nazin

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