THE INFLUENCE OF CONTAMINATED HYDRAULIC FLUID ON THE RELATIVE VOLUME FLOW RATE AND THE WEAR OF RUBBING PARTS OF THE AVIATION PLUNGER PUMP | Zendy

Volodymyr Brazhenko | Zendy

Open Access

THE INFLUENCE OF CONTAMINATED HYDRAULIC FLUID ON THE RELATIVE VOLUME FLOW RATE AND THE WEAR OF RUBBING PARTS OF THE AVIATION PLUNGER PUMP

Author(s) -

Volodymyr Brazhenko

Publication year - 2019

Publication title -

aviation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.239

H-Index - 13

eISSN - 1822-4180

pISSN - 1648-7788

DOI - 10.3846/aviation.2019.10299

Subject(s) - plunger pump , rubbing , plunger , volume (thermodynamics) , volumetric flow rate , hydraulic fluid , materials science , hydraulic pump , flow (mathematics) , particle (ecology) , mechanics , relative velocity , forensic engineering , petroleum engineering , composite material , mechanical engineering , engineering , hydraulic machinery , thermodynamics , geology , physics , oceanography , quantum mechanics

Still, there is the problem of the plunger pumps failures due to pollution of the working fluid with mechanical impurities in civil aviation. The article deals with experimental research the change of relative volume flow rate of plunger pump model NP-72M which depends on the working fluid purity. In particular, the negative effect of increasing the particle size of impurities (electrocorundum about 3 μm, 10 μm, 20 μm) and increasing particles concentration (about 25–150 mg/L) with the constant particle size on pump operation has presented. This has manifested in increased wear of rubbing parts and reduced the relative volume flow rate. A visual inspection of the pump parts has carried out, and the most damaged areas have identified.

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