Results 11 to 20 of about 19,694 (262)

Design of a new-concept conical positive displacement slurry pump for continuous de-clogging [PDF]

open access: yesMATEC Web of Conferences, 2019
Slurry pumps are extensively used in the construction industry while positive displacement screw pumps are used in most mobile concrete pump applications. The aggregate size is known to significantly affect pump performance in terms of clogging.
Vasileiou G.   +4 more
doaj   +1 more source

Modelling of an In-Line Bladder-Type Hydraulic Suppressor for Pressure Ripple Reduction in Positive Displacement Pumps

open access: yesMachines, 2023
Positive displacement pumps are widely employed for their characteristics, but the pulsating flow they produce is a major and well-known drawback. To reduce the flow ripple produced by the pump, which in turn generates a pressure ripple, many methods ...
Paolo Casoli   +2 more
doaj   +1 more source

Triple-screw pumps for ICE cooling systems in the transportation sector [PDF]

open access: yesE3S Web of Conferences, 2021
Recent EU Regulations have been pushing the transportation sector increasingly towards the reduction of primary harmful pollutants and CO2 emissions.
Di Giovine Giammarco   +4 more
doaj   +1 more source

A CFD-Based Comparison of Different Positive Displacement Pumps for Application in Future Automatic Transmission Systems

open access: yesEnergies, 2021
The efficiency requirements for hydraulic pumps applied in automatic transmissions in future generations of automobiles will increase continuously. In addition, the pumps must be able to cope with multiphase flows to a certain extent.
Thomas Lobsinger   +3 more
doaj   +1 more source

The Determination of the Theoretical Stroke Volume of Hydrostatic Positive Displacement Pumps and Motors from Volumetric Measurements

open access: yesEnergies, 2019
This document presents a revised translation to the English language work developed more than 40 years ago by the first author. It further summarizes a common misinterpretation of the method and succinctly describes a graphical procedure to correctly ...
Gijsbert Toet   +4 more
doaj   +1 more source

A Positive Flow Control System for Electric Excavators Based on Variable Speed Control

open access: yesApplied Sciences, 2020
Energy conservation and emission reduction of construction machinery are the focus of current research. The traditional excavator, whose hydraulic pump is driven by the engine, has high fuel consumption and emissions.
Shengjie Fu   +4 more
doaj   +1 more source

Tribological Characterization of Some Elastomers Used at Progressive Cavity and Piston Pumps [PDF]

open access: yesMATEC Web of Conferences, 2020
The progressive cavity pump (PCP) is a positive displacement pump, consisting of a polished helical-shaped rod (rotor) turning inside a helical elastomer (stator).
Mohamed Iyad Al Naboulsi   +3 more
doaj   +1 more source

Development tendencies of clearance compensation methods in internal gear pumps [PDF]

open access: yesMATEC Web of Conferences, 2021
Contemporary gear pumps, although their design has been under development for over four centuries, keep being modernized and improved. The work presents an analysis of design solutions, taking into account their operational features.
Osiński Piotr   +5 more
doaj   +1 more source

Digitalization of Radial Piston Pumps through Internal Mechanically Actuated Designs

open access: yesActuators, 2023
Digital hydraulics is a technology gaining perceptible growth in fluid power research. The advantages of digital fluid power systems can be realized through improved system efficiencies, energy savings, increased productivity, and system performance ...
Keith Pate   +4 more
doaj   +1 more source

An investigation of the impact of pump deformations on circumferential gap height as a factor influencing volumetric efficiency of external gear pumps

open access: yesTransport, 2022
Gear pumps are widely used in transport machines not only in hydraulic drive systems, but also in lubrication and fuel systems. A positive displacement pump converts mechanical energy into pressure energy stored in the liquid, which it transports to the
Rafał Cieślicki, Mykola Karpenko
doaj   +1 more source

Home - About - Disclaimer - Privacy