Results 261 to 270 of about 175,360,748 (298)

Valve Train Design for a New Gas Exchange Process

SAE Technical Paper Series, 2004
<div class="htmlview paragraph">The design and testing of the valve train for a new two-stroke diesel engine concept [<span class="xref">1</span>,<span class="xref">2</span>] is presented. The gas exchange of this process requires extremely fast-acting inlet valves, which constituted a very demanding designing task.
Tore Grönlund, Martti Larmi
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New concepts in the design and use of biological prosthetic valves

Cardiovascular Pathology, 1995
The natural aortic valve is a structure that has thus far eluded all attempts at duplication with synthetic materials. Real success in the replacement of the aortic valve has come about primarily through the use of biological devices, such as the porcine aortic valve xenograft. In the future, bioprostheses based more closely on the natural aortic valve
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A new design for polyurethane heart valves.

The Journal of heart valve disease, 2001
The synthetic flexible tri-leaflet heart valve offers considerable potential for improvement in both hydrodynamic and biomechanical performance of replacement heart valves. To date, success with the synthetic leaflet heart valve has been limited, partly due to limitations in the biostability of the polyurethanes used.
M, Butterfield, D J, Wheatley, D F, Williams, J, Fisher   +3 more
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Design and Experimental Research on a New Pipe Rupture Valve

Frontiers of Mechanical Engineering in China, 2006
A new pipe rupture valve for hydraulic elevator is designed. Mathematical models established for the hydraulic elevator system are used in numerical simulations on the Simulink environment of Matlab kits. The effects of different viscous damping diameters, inlet pressures of pipe rupture valve, and elevator loads on the hydraulic elevator system’s ...
Guo-liang Hu, Bing Xu, Hua-yong Yang, Yi-ding Zhang   +3 more
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Optimum design for new gas lift valve seat

Journal of Petroleum Science and Engineering, 2017
Abstract The Testing Gas Lift Valve (GLV) Beveled Seat showed excellent performance improvement as compared to the Sharp-Edged Seat design as reported by Elldakli et al. (2014) . To optimize the initial Beveled Seat design requires manufacturing and testing numerous cases which is a very costly and time-consuming process.
Fathi Elldakli, Mohamed Soliman
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A New Type of Feed Valve Design and Application

Applied Mechanics and Materials, 2013
According to coal-fired power plant’s granulated powder preparation,storage and delivery processes, the existing problems of feed valves in the actual useing environment and job conditions.It was introduced to the principle about a new type of the feed valve,the form of structure and practical application.
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Design and Development of a New Valve Geometry for Spacer Devices

Volume 2: Biomedical and Biotechnology Engineering, 2010
Nebulizers such as, Dry Powder Inhalers (DPI’s) and pressurized Metered-Dose Inhalers (pMDI’s), are all equally used in the treatment of asthma. For children, where the asthma incidence is high and where a good coordination between the device actuation and the respiration is needed to use the pMDI, a solution was found with the introduction of an add ...
Ricardo F. Oliveira, Senhorinha F. C. F. Teixeira, Lui´s F. Silva, Jose´ Carlos Teixeira, Henedina Antunes   +4 more
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A New Method of Valve Cam Design-HYSDYNE Cam

SAE Technical Paper Series, 1977
<div class="htmlview paragraph">The choice of cam profile is a matter of primary significance in the procedure of valve gear design. It is long since dynamic design methods were first proposed and used, but even so, shortcomings still exist.
Hiroshi Kanesaka, Kishiro Akiba, Hiroshi Sakai   +2 more
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An Optimal Design for New Electromagnetic Valve in Camless Engines

Applied Mechanics and Materials, 2013
Some previous studies have demonstrated that electromagnetic valve (EMV), which uses permanent magnet and electromagnetic coil (PM/EM) hybrid actuator, has some benefits about actuator control, energy consumption, time response compared with conventional EMVs. In this paper, a new EMV with PM/EM actuator, which significantly differs from existing EMVs,
Ly Vinh Dat, Yao Jung Shiao, Phuc Le Thanh   +2 more
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Concept and Design of New Type Valve with Helix Type Spool

2016
The paper presents the design of new kind of electrohydraulic valve with helix type rotary spool. First part, provides a literature overview concerning on the construction of the hydraulic valves. Then, Authors present a pair of spool works principle of a new type valve.
Dominik Rybarczyk, Czeslaw Jermak
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