Results 1 to 10 of about 5,733,061 (341)

Research on the Volumetric Efficiency of a Novel Stacked Roller 2D Piston Pump

open access: yesMachines, 2021
In order to improve the volumetric efficiency of the axial piston pump, this paper proposes a novel stacked roller 2D piston pump. It utilizes the alternate communication between the distribution cylinder and the oil intake and discharge ports of the ...
Chenchen Zhang   +5 more
doaj   +2 more sources

Volumetric efficiency in motor-driven two-dimensional piston pumps with leakage and reverse flow under high pressure. [PDF]

open access: yesSci Rep
This paper presents a volumetric efficiency model for high-pressure motor-driven 2D piston pumps, incorporating key factors such as axial internal and external leakage, circumferential leakage, and reverse flow.
Chen Y, Hua C, Tong C, Zang Y, Ruan J.
europepmc   +2 more sources

Effect of clearance on volumetric efficiency in 2D piston pumps

open access: yesAdvances in Mechanical Engineering, 2021
In order to solve the limitations of the friction pairs in axial piston pumps on rotational speed and mechanical efficiency, a 2D piston pump whose 2D piston has two-degree-of-freedom motions of rotation and reciprocating motion was proposed by the ...
Yu Huang   +3 more
doaj   +2 more sources

Volumetric efficiency degradation prediction of axial piston pump based on friction and wear test. [PDF]

open access: yesHeliyon
The axial piston pump (APP) is being developed towards higher pressure and higher rotational speeds to enhance operational power density. The piston-cylinder friction pair is a critical component of the APP.
Yin W, Zhang J, Wang X, Zhang Q, Li Y.
europepmc   +2 more sources

Influence of Fluid Compressibility and Movements of the Swash Plate Axis of Rotation on the Volumetric Efficiency of Axial Piston Pumps

open access: yesEnergies, 2022
This paper describes the design of a swash plate axial piston pump and the theoretical models describing the bulk modulus of aerated and non-aerated fluids.
Paweł Załuski
doaj   +2 more sources

Fuzzy modeling of volumetric efficiency and specific energy consumption in agricultural screw conveyors [PDF]

open access: yesCiência Rural, 2020
: Vertical screw conveyors have low energy efficiency but this is generally acceptable within the normally low power range. Previously, a fuzzy logic approach was used to model volumetric efficiency and specific energy consumption in screw conveyors. The
Osman Özbek
doaj   +2 more sources

Research on the Volumetric Efficiency of 2D Piston Pumps with a Balanced Force

open access: yesEnergies, 2020
Axial piston pumps with high rotational speeds are required in many fields to increase the power-to-weight ratio. However, three main sliding friction pairs in the pump restrict the increase in rotational speed.
Yu Huang   +4 more
doaj   +2 more sources

Effects of Volumetric Property Models on the Efficiency of a Porous Volumetric Solar Receiver

open access: yesEnergies, 2022
A porous volumetric receiver is the key component in concentrated solar power systems. In this paper, we investigate the effects of volumetric parameter models on the heat collection efficiency of the volumetric receiver by numerical simulations with the
Xuewei Ni, Tiening Liu, Dong Liu
doaj   +2 more sources

On the Efficiency of Mobile Hydraulic Power Packs Operating with New and Aged Eco-Friendly Fluids

open access: yesEnergies, 2023
With the increasing environmental awareness, in many applications, ranging from agriculture to industry and logistics, a wider and wider use of eco-friendly fluids is desirable.
Ornella Chiavola   +4 more
doaj   +1 more source

The Effect of Intake Valve Timing on Spark-Ignition Engine Performances Fueled by Natural Gas at Low Power

open access: yesEnergies, 2022
To reduce the greenhouse effect, it is important to reduce not only carbon dioxide but also methane emissions. Methane gas can be not only a fossil fuel (natural gas) but also a renewable energy source when it is extracted from biomass.
Alfredas Rimkus   +4 more
doaj   +1 more source

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