Results 31 to 40 of about 102,186 (212)

Design, Analysis, Prototyping, and Experimental Evaluation of an Efficient Double Coil Magnetorheological Valve

open access: yesAdvances in Mechanical Engineering, 2014
A double coil magnetorheological (MR) valve with an outer annular resistance gap was designed and prototyped. The finite element modeling and analysis of double coil MR valve were carried out using ANSYS/Emag software, and the optimal magnetic field ...
Guoliang Hu   +3 more
doaj   +1 more source

Assessing the Sensitivity and the Clinical Impact of the 2023 American College of Rheumatology/EULAR Classification Criteria in Obstetric Antiphospholid Syndrome: Findings From a Multicenter Italian Cohort With a Long‐Term Follow‐Up

open access: yesArthritis Care &Research, EarlyView.
Objective The aim of this study was to evaluate the sensitivity of the 2023 American College of Rheumatology (ACR)/EULAR classification criteria for antiphospholipid syndrome (APS) in a real‐world cohort of women diagnosed with primary obstetric APS (oAPS) and to assess their ability to identify patients at risk of future pregnancy complications ...
Francesca Ruffilli   +10 more
wiley   +1 more source

Design, Modeling, and Feasibility Analysis of Rotary Valve for Internal Combustion Engine

open access: yesJournal of Combustion
There have been several studies focused on improving the efficiency of internal combustion engines using various techniques such as better design, better materials, and regenerative technologies.
Wenbo Dong, Vishwas N. Bedekar
doaj   +1 more source

Design and Performance Evaluation of an Electro-Hydraulic Camless Engine Valve Actuator for Future Vehicle Applications

open access: yesSensors, 2017
This paper details the new design and dynamic simulation of an electro-hydraulic camless engine valve actuator (EH-CEVA) and experimental verification with lift position sensors.
Kanghyun Nam   +3 more
doaj   +1 more source

Cost effective combined axial fan and throttling valve control of ventilation rate [PDF]

open access: yes, 2004
This paper is concerned with Proportional-Integral-Plus (PIP) control of ventilation rate in mechanically ventilated agricultural buildings. In particular, it develops a unique fan and throttling valve control system for a 22m3 test chamber, representing
Leigh, P.   +5 more
core  

Characterization and Testing of an Electrorheological Fluid Valve for Control of ERF Actuators

open access: yesActuators, 2015
Previous studies of electrorheological fluids (ERFs) were motivated by brake, clutch, damping, haptic and resistive applications, but never motivated towards developing an ERF based-hydraulic rotary actuator. One design to make such an actuator is to use
Quang-Anh Nguyen   +3 more
doaj   +1 more source

Numerical study on a rotational hydraulic damper with variable damping coefficient

open access: yesScientific Reports, 2021
The rotational hydraulic damper has advantages in the design and control of rotational machines. This paper presents a novel hydraulic rotational damper with the characteristic of adjusting the damping coefficient.
Huiyong Zhao, Baohua Wang, Genfu Chen
doaj   +1 more source

Research on the Controllable Interface Response Enhancement of the Textured Pilot Valve

open access: yesMachines, 2022
Based on the textured controllable interface effect, the dynamic performances of the textured and ordinary pilot valve are analyzed experimentally, and the influence of the textured controllable interface on the response of pilot valve is studied ...
Jing Xu   +4 more
doaj   +1 more source

Modelling and experimentation on air hybrid engine concepts for automotive applications [PDF]

open access: yes, 2007
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Hybrid powertrains that use compressed air to help power a vehicle could dramatically improve the fuel economy, particularly in cities and urban areas where
Psanis, Christodoulos
core  

Design and flow field characterization of safety valves based on the Laval principle

open access: yesMechanics & Industry
This paper designs a new type of safety valve suitable for ultra-supercritical conditions and analyzes its flow field characteristics through numerical simulation.
Wang Lisong   +7 more
doaj   +1 more source

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