Browsing by Author "Trofimov, Igor"

Now showing 1 - 5 of 5
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    Anti-wear Properties of Jet Fuel with Camelina Oils Bio-Additives
    (Springer, Cham, 2020-01) Trofimov, Igor; Yakovlieva, Anna; Boichenko, Sergii Boichenko; Kuszewsk, Hubert; Lejda, Kazimierz
    Anti-wear properties of conventional jet fuel, fatty acids ethyl esters bio-additives derived from camelina oil and their blends were investigated experimentally. Anti-wear properties were estimated on a four-ball tester by the value of the scuffing load, friction torque, friction coefficient and the scuffing load applied to the friction pair operating in a tested fuel sample. The state of friction pairs’ surfaces was studied using the system for tribological characteristics of fuels and lubricants investigation by comparing microphotographs of friction pairs’ surfaces. It was determined that lubricity of bio-additives is intensively higher comparing to conventional jet fuel. Bio-additives derived from camelina oil provide formation of better oxidative film on friction pairs’ surface with higher elasticity. It is stipulated by the chemical composition of fatty acids ethyl esters: high polarity of molecules stipulate its’ good adsorption at the surface of friction pair. Adding bio-additives into jet fuel provides strengthening of boundary film and thus improves anti-wear properties of fuel blends.
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    Determination of the mechanism of forming the surface structures of IIX-15 steel at friction in the environment of aviation fuels on the basis of ethyl oleic esters of rye oil
    (2019) Trofimov, Igor; Svyryd, Mykhail; Boichenko, Sergii; Yakovlieva, Anna; Sydorenko, Oleksandr
    Presented studies are related to the spheres of aviation and machine-building. Anti-wear properties of conventional jet fuel, fatty acids ethy esters bio-additives derived from camelina oil and their blends were investigated experimentally, It was found that lubricity of bio-additive is significantly higher comparing to conventional oil-derived jet fuel. It was found that addition of bio-additive into the composition of jet fuel leads to strengthening of boundary film, decreasing of friction coefficient and improvement of anti-wear properties of fuel blends.
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    Energy is change motion – state
    (Intarnational aviation institute of Anadolu, 2016-04) Trofimov, Igor
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    FRICTION PAIR TRIBOLOGICAL PROPERTIES IN MAGNETIC FIELD
    (НАУ, 2015-04) Trofimov, Igor
    In the article the processes, going during friction in the unidirected magnetic field and in the impulsive magnetic field are considered, frequency of impulses is regulated. Optimal parameters for friction pair renewal are determined. Investigation of paramagnetic material tin was carried out in different MF-s: a constant magnetic field; 1-pulsed unidirectional, 2 - 6 Hz pulse modulated.
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    Improvements power aggregates construction on transport
    (Вісник Національного транспортного університету України, 2017-05) Trofimov, Igor
    This article discusses the problem of creating and using mechanical energy accumulators, as well as a model of the inertial generator for creating and accumulating energy for hydrostatic drive of machines used in engineering practice. The analysis means of accumulation energy is carried out. The problem of using mechanical flywheel batteries is analyzed. It has been established that the main advantages of flywheel generators are energy release by rotating the shaft of the flywheel itself, as well as rather high indicators of reliability, durability, efficiency, the influence of temperature effects in comparison with electrochemical, pneumatic and pneumohydraulic energy accumulators.