Results 31 to 40 of about 41,321 (274)
Profile design and displacement analysis of the low pulsating gear pump
Advances in Mechanical Engineering, 2018 Aiming at the problems of the general involute external gear pump, a gear pump with double circular arc helical gear as motion pair is proposed. Based on the comparison and analysis of their meshing characteristics, the advantages of contact strength ...
Geqiang Li, Longfei Zhang, Weifeng Han
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Steady-State Flow Characteristics and End Clearance Optimization of Internal Gear Grease Pump
Advances in Materials Science and Engineering, 2021 The internal gear grease pump is a mechanical device used for transfer of high viscosity fluid. The existing clearance between the end faces of the internal or external gear and the floating side plate might cause pump leakage during operation.
Xinjian Li, Lingfeng Tang, Ming Qian
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Advanced Engineering Research, 2022 Introduction. Some of the major factors in the occurrence of vibration of units, causing fatigue failure of the housings of elements, pipelines, and failure of pump elements, are pulsations of the working medium in the hydraulic systems of machine tools,
V. I. Sanchugov, P. D. Rekadze
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Archives of Acoustics, 2016 This paper describes the development phases of a numerical-experimental integrated approach aimed at obtaining sufficiently accurate predictions of the noise field emitted by an external gear pump by means of some vibration measurements on its external ...
Eleonora CARLETTI +3 more
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Авіаційно-космічна техніка та технологія, 2021 The paper is about the performance capability of the journal bearings as a support of the fuel gear pump for gas turbine engines (GTE). Supports of the external gear pump usually operate in semi-dry friction conditions, which reduces residual life and is
Олександр Віталійович Білогуб +3 more
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Analysis of the influence of hydraulic fluid quality on external gear pump performance
Eksploatacja I Niezawodnosc-maintenance and Reliability, 2022 The basis of every hydraulic system is based on energy transformations, which are realized through hydraulic working fluid. Hydraulic oils are certainly subject to changes within their structure, meaning the basic characteristics and parameters of ...
Borivoj Novaković +5 more
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Development of CFD-based procedure for 3d gear pump analysis
Engineering Applications of Computational Fluid Mechanics, 2020 Tumbling Multi-Chamber (TMC) gear pump is a generally unknown type of hydraulic device, which features a unique three-dimensional shape of the gears. The main benefits of such design over the conventional gear pumps are self-adapting tightness of the ...
Jernej Munih +3 more
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Evaluation of the Hydro—Mechanical Efficiency of External Gear Pumps
Energies, 2019 This paper proposes and describes a model for evaluating the hydro-mechanical efficiency of external gear machines. The model is built considering and evaluating the main friction losses in the machines, including the viscous friction losses at the tooth tip gap, at the bearing blocks-gears gaps, at the journal bearings, and the meshing loss.
Zardin B., NATALI, EMILIANO, Borghi M.
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Modeling the Meshing Procedure of the External Gear Fuel Pump Using a CFD Tool
Computation, 2022 In modern aircraft engine technology, there is a tendency to replace the mechanical drive of external gear fuel pumps with an electric one. This significantly reduces the integral energy consumption for pumping fuel (kerosene).
Ihor Romanenko +2 more
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The extrusion of EPDM using an external gear pump: experiments and simulations
International polymer processing, 2022 External gear pumps are used in fluid transport systems because of their tight clearances and accurate flow control. These tight clearances are a challenge for numerical studies in terms of spatial discretization.
Vincent G. de Bie +3 more
semanticscholar +1 more source