Results 11 to 20 of about 29,179 (258)

An absolute continuity for positive operators on Banach lattices

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
For positive operators on a Banach lattice, absolute contnuity conditions are considered. An operator absolutely continuous with respect to T is compared to sums of compositions of T together with orthomorphisms or in special cases projections ...
W. Feldman   +2 more
doaj   +1 more source

The influence of laser treatment on the properties of the surface of cylinder-piston group parts [PDF]

open access: yesAvtomobilʹnyj Transport (Harʹkov), 2020
Various valuable materials and technological methods are used to increase the durability of the parts of the cylinder-piston group of internal com-bustion engines. The performance of internal com-bustion engines largely depends on the service life of the
Hlushkova Diana, Nikonov Oleg
doaj   +1 more source

Piston rotation and frictional forces between piston and cylinder of piston and motor

open access: yesProceedings of the JFPS International Symposium on Fluid Power, 1993
The influence of the piston rotation on the frictional forces between the piston and the cylinder has been studied experimentally for a swash plate type piston pump and motor. In order to measure the rotational speeds of the piston, the capacitance detecting method have been employed for the piston with the slits.
Tanaka, Kazuhiko   +2 more
openaire   +3 more sources

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

Pengaruh Variasi Diameter Torak terhadap Performansi Sepeda Motor Bertransmisi Manual

open access: yesQuantum Teknika, 2023
This research is an experimental study conducted to determine the effect of variations in piston diameter on the performance of manual transmission motorbikes.
I Gede Billy Arya Pratama   +2 more
doaj   +1 more source

Mathematical Model of Piston Ring Sealing in Combustion Engine

open access: yesPolish Maritime Research, 2015
This paper presents a mathematical model of piston-rings-cylinder sealing (TPC) of a combustion engine. The developed model is an itegrated model of gas flow through gaps in TPC unit, displacements and twisting motions of piston rings in ring grooves as ...
Koszałka Grzegorz, Guzik Mirosław
doaj   +1 more source

Tribology of Wire Arc Spray Coatings under the Influence of Regenerative Fuels

open access: yesLubricants, 2018
In order to further optimize the efficiency of today’s internal combustion engines, specific coatings are used on functional surfaces to reduce internal engine friction and wear.
Roman Böttcher   +3 more
doaj   +1 more source

Mathematical model of working processes of piston hybrid power machine of volumetric action with reduced fluctuations of gas pressure in discharge line [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2019
The paper considers a new scheme for reducing pressure fluctuations on the gas injection line in the compressor section of a hybrid power machine, highlights the main control volumes for the compressor and pump sections.
V. E. Scherba   +2 more
doaj   +1 more source

Theoretical and Numerical Study on Dynamic Response of Propellant Actuator

open access: yesActuators, 2022
In order to solve the complexity of the structure, assembly process, component contact state and working process of the propellant actuator by conventional methods, a novel design method based on theoretical and numerical analysis was proposed.
Pengzhao Xu   +5 more
doaj   +1 more source

Machine Learning-Assisted Optimization of Femtosecond Laser-Induced Superhydrophobic Microstructure Processing

open access: yesPhotonics
Superhydrophobic surfaces have garnered significant attention due to their pivotal roles in various fields. Femtosecond laser technology provides a feasible means for inducing superhydrophobic microstructures on material surfaces.
Lifei Wang   +8 more
doaj   +1 more source

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