Results 21 to 30 of about 8,232 (282)

Inspired by Earthworms and Leeches: The Effects of Cylindrical Pit Arrays on the Performance of Piston-Cylinder Liner Friction Pairs

open access: yesApplied Sciences, 2023
To improve the friction and wear performance of the piston-cylinder liner friction pair, inspired by earthworms and leeches, 27 kinds of pistons with cylindrical pit arrays are designed and processed.
Tianyu Gao   +3 more
doaj   +1 more source

Wringing effect prevention on a piston design in a downhole drilling tool

open access: yesThe Journal of Engineering, 2020
This research studied the wringing effect present on a piston with two contact surfaces in a downhole tool and investigated piston design guidance to prevent this occurrence.
Fei Li, Rui Gao
doaj   +1 more source

Analysis and modelling on coring process of deep-sea gravity piston corer

open access: yesThe Journal of Engineering, 2020
Taken the deep-sea gravity-piston corer as the prototype, a model of the corer penetrating was built based on energy conservation and by analysing the coring process.
Haoyu Wu   +4 more
doaj   +1 more source

Rod pistons, traditional forging tool

open access: yes, 2023
NAJ with sample of rod pistons, a traditional forging tool.
Tracy Peter Samat   +1 more
core   +1 more source

Design and analysis on the flow fluctuation of a new horizontal space multiphase crankshaft pump

open access: yesThe Journal of Engineering, 2018
In civil aviation ground deicing system, the traditional reciprocating pump is often used as the power supply device to ensure the physical and chemical properties of high viscosity deicing fluid.
Mengli Wu   +6 more
doaj   +1 more source

Determining the Optimal Number of Pistons for Offshore Digital Winch Drives

open access: yesEnergies, 2023
In offshore winch drive applications, determining the required number of pistons in digital displacement motors is critical for minimizing torque ripples.
Thomas Farsakoglou   +3 more
doaj   +1 more source

Experimental comparison of two linear machines developed for the free piston engine

open access: yesThe Journal of Engineering, 2019
In this study, a linear synchronous machine is compared with a linear transverse flux machine. Both machines have been designed and built with the intention of being used as the power take off in a free piston engine.
Nick.J. Baker   +3 more
doaj   +1 more source

Novel study on the pressure pulsation of the axial piston machines with even number of pistons

open access: yesThe Journal of Engineering, 2020
Flow and pressure ripples of axial piston machines have received sustained attentions by researcher in flow power domain. Traditionally, almost all the axial piston pumps have been designed with odd number of pistons.
Junjie Zhou   +3 more
doaj   +1 more source

Ways to increase the wear resistance of pistons of internal combustion engines (review)

open access: yesПроблеми трибології, 2021
The article analyzes the materials from which the piston is made for internal combustion engines. For automobile and tractor engines, in particular, eutectoid mixtures of the AL25 type and eutectoid mixtures containing copper, nickel, magnesium and ...
T. V. Dudchak
doaj   +1 more source

Comparison of Nitinol Stapes Pistons with Conventional Stapes Pistons: A Cadaver Study [PDF]

open access: yes, 2011
Objective. To visually compare the Nitinol “smart” stapes prosthesis to conventional manual crimping stapes pistons in temporal bone cadaver specimens. Main Outcome Measures.
James V. Crawford, Samuel A. Spear
core   +1 more source

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