<abstract xmlns="http://www.w3.org/1999/xhtml">The objective of the work is to develop the capability of evaluating the volumetric losses of hydraulic oil compression in the working chambers of high pressure variable capacity displacement pump. Volumetric losses of oil compression must be determined as functions of the same parameters, which the volumetric losses due to leakage, resulting from the quality of design solution of the pump, are evaluated as dependent on and also as function of the oil aeration coefficient Ɛ. A mathematical model has been developed describing the hydraulic oil compressibility coefficient <italic>k</italic><italic>lc|Δppi;Ɛ;v</italic> as a relation to the ratio Δ<italic>pPi/pn</italic> of indicated increase Δ<italic>p</italic><italic>Pi</italic> of pressure in the working chambers and the nominal pressure pn, to the pump capacity coefficient <italic>bP</italic>, to the oil aeration coefficient  and to the ratio v/vnof oil viscosity v and reference viscosity <italic>vn</italic>. A mathematical model is presented of volumetric losses <bold>q</bold><bold>pvc</bold><bold>|ΔpPi;bp;;v</bold>of hydraulic oil compression in the pump working chambers in the form allowing to use it in the model of power of losses and energy efficiency</abstract>

The objective of the work is to develop the capability of evaluating the volumetric losses of hydraulic oil compression in the working chambers of high pressure variable capacity displacement pump. Volumetric losses of oil compression must be determined as functions of the same parameters, which the volumetric losses due to leakage, resulting from the quality of design solution of the pump, are evaluated as dependent on and also as function of the oil aeration coefficient Ɛ. A mathematical model has been developed describing the hydraulic oil compressibility coefficient klc|Δppi;Ɛ;v as a relation to the ratio ΔpPi/pn of indicated increase ΔpPi of pressure in the working chambers and the nominal pressure pn, to the pump capacity coefficient bP, to the oil aeration coefficient  and to the ratio v/vnof oil viscosity v and reference viscosity vn. A mathematical model is presented of volumetric losses qpvc|ΔpPi;bp;;vof hydraulic oil compression in the pump working chambers in the form allowing to use it in the model of power of losses and energy efficiency

Mathematical Model Defining Volumetric Losses of Hydraulic Oil Compression in a Variable Capacity Displacement Pump

Polish Maritime Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The objective of the work is to develop the capability of evaluating the volumetric losses of hydraulic oil compression in the working chambers of high...

Mathematical Model Defining Volumetric Losses of Hydraulic Oil Compression in a Variable Capacity Displacement Pump

Published Online: Jan 31, 2015

Page range: 90 - 99

DOI: https://doi.org/10.2478/pomr-2014-0045

© 2015 Zygmunt Paszota

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.