Results 41 to 50 of about 909,329 (315)

Study on Friction Characteristics of Slipper Pair of Large Displacement High-Pressure Piston Pump

open access: yesLubricants, 2022
The reference value of the oil film thickness and friction coefficient of the slipper pair is critical to the development of the piston pump, especially for 750 mL/r displacement piston pumps.
Zekui Li   +6 more
semanticscholar   +1 more source

Gas-to-hydraulic power converter [PDF]

open access: yes, 1982
A gas piston driven hydraulic piston pump is described in which the gas cycle is of high efficiency by injecting the gas in slugs at the beginning of each power stroke. The hydraulic piston is disposed to operate inside the as piston, and the two pistons,
Galloway, C. W.
core   +1 more source

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

open access: yesAdvanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler   +3 more
wiley   +1 more source

Flow pulsation characteristics of variable displacement piston pump considering coupling effects cavitation bubble and swash plate inclination angle vibration

open access: yesThe Physics of Fluids
Variable-displacement piston pumps, in comparison with quantitative pumps, offer high volumetric efficiency, energy savings, and variable displacement advantages.
Yang Pan   +4 more
semanticscholar   +1 more source

Hydraulic Pump Fault Diagnosis Method Based on EWT Decomposition Denoising and Deep Learning on Cloud Platform

open access: yesShock and Vibration, 2021
An axial piston pump fault diagnosis algorithm based on empirical wavelet transform (EWT) and one-dimensional convolutional neural network (1D-CNN) is presented.
Wanlu Jiang   +4 more
doaj   +1 more source

Negative feedback system reduces pump oscillations [PDF]

open access: yes, 1967
External negative feedback system counteracts low frequency oscillations in rocket engine propellant pumps.
Rosenmann, W.
core   +1 more source

Thermo‐Mechanically Recyclable Smart Textiles from Circularly Knitted Liquid Crystal Elastomer Fibers

open access: yesAdvanced Functional Materials, EarlyView.
Reprogrammable multi‐material smart textiles knitted from liquid crystal elastomer fibers undergo 2D and 3D deformation under thermal and photo stimuli. Circularly knitted tubular structures reversibly contract in radial and axial directions, enabling autonomous climbing, liquid release, and micro pumping.
Xue Wan   +8 more
wiley   +1 more source

Study on mechanical efficiency of 65 ml/r fuel pump and its piston optimization

open access: yesAdvances in Mechanical Engineering, 2023
The 65 ml/r fuel pump proposed in this paper is a new type of large-displacement piston pump. The pump is of the roller plunger type construction. This structure enables the pump to have good performance even under high and variable speed conditions ...
Yang Ding   +4 more
doaj   +1 more source

Analysis of piston seals efficiency in silent pump units using analysis of deformed state of compression chamber cylindrical part [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2020
The article discusses the application of various types of seals in piston pump with low-speed long-stroke units. The calculated values of the deformations of the cylindrical part of the working chamber and the current value of the actual clearances for
D. S. Titov, S. S. Busarov, I. P. Aistov
doaj   +1 more source

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

open access: yesAdvanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu   +18 more
wiley   +1 more source

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