Results 41 to 50 of about 47,287 (163)

Research on a kind of self-compensation variable-clearance sealing hydraulic cylinder with a thin shell structure

AIP Advances, 2018
Hydraulic cylinder is the most typical hydraulic actuator. The traditional sealing ring used in hydraulic cylinder produces the friction which greatly affects the high speed performance of the hydraulic cylinder.
Yuanhui Li, Kuisheng Chen, Congchang Zhan, Liandong Fu   +3 more
doaj   +1 more source

Increasing the Operation Efficiency of Low Pressure Cylinders of Cogeneration Turbines

NTU "KhPI" Bulletin: Power and heat engineering processes and equipment, 2017
An increase in the operation efficiency of cogeneration turbines used by big heat and power plants is conditioned by the need of a maximum use of the fuel heat, mainly that of natural gas. The generation of two types of energy, in particular electric and thermal by cogeneration turbines for outside consumers is closely related to turbine operation ...
Shubenko, Oleksandr Leonidovich, Goloshchapov, Volodimir Nikolaevich, Babenko, Olga Anatoliivna   +2 more
openaire   +3 more sources

PROPORTIONAL VELOCITY CONTROL OF LOW-PRESSURE WATER HYDRAULIC CYLINDER DRIVE

Proceedings of the JFPS International Symposium on Fluid Power, 2002
This paper studies velocity control of a low-pressure water hydraulic cylinder drive. Two different systems are used, one with a proportional 4/3-way directional control valve and one with a proportional flow control valve. Experimental results with the proportional directional valve show that good control results can be achieved with closed-loop ...
Sairiala, Harri, Linjama, Matti, Koskinen, Kari T., Vilenius, Matti   +3 more
openaire   +2 more sources

Development of an optical time-resolved measurement system under high-pressure and low-temperature with a piston-cylinder pressure cell [PDF]

Review of Scientific Instruments, 2016
To perform the femtosecond pump-probe spectroscopy under high pressure and low temperature, we constructed a measurement system with a piston cylinder type pressure cell installing an optical fiber bundle. The applied pressure was achieved to 6 kbar and the cell was cooled down to 15 K.
Satoshi Tsuchiya, Yohei Kino, Koichi Nakagawa, Daisuke Nakagawa, Jun-ichi Yamada, Yasunori Toda   +5 more
openaire   +3 more sources

Application Study on Zero Output Technology of Low Pressure Cylinder of 350MW Supercritical Unit

IOP Conference Series: Earth and Environmental Science, 2021
Abstract In response to the requirement of national thermal power flexibility reform policy and the need of regional central heating development, a 350MW supercritical unit in a power plant has been transformed with zero output technology of low pressure cylinder.
Wei Zheng, Lingkai Zhu, Yongqiang Che, Junshan Guo, JinXu Lao, Li Li, Junqi Ding   +6 more
openaire   +1 more source

Fuel Injection Optimization for Large-Bore Two-Stroke Natural-Gas Engines

Energies
Recent methane emissions regulations present a challenge for the large-bore, natural-gas-fueled engines used at over 1700 compression stations across the US.
Titilope Ibukun Banji, Gregg Arney, Daniel B. Olsen   +2 more
doaj   +1 more source

Two dimensional analysis of low pressure flows in the annulus region between two concentric cylinders [PDF]

SpringerPlus, 2016
A numerical simulation of the steady two-dimensional laminar natural convection heat transfer for the gaseous low-pressure flows in the annulus region between two concentric horizontal cylinders is carried out. This type of flow occurs in "evacuated" solar collectors and in the receivers of the solar parabolic trough collectors. A finite volume code is
Al-Kouz, Wael, Alshare, Aiman, Alkhalidi, Ammar, Kiwan, Suhil   +3 more
openaire   +2 more sources

Experimental Assessment of a Methodology for the Indirect in-Cylinder Pressure Evaluation in Four-Stroke Internal Combustion Engines

Energies, 2018
Recent innovations in engine control and diagnostics are providing room for development of innovative combustion approaches (e.g., low-temperature combustion) able to minimize the creation of pollutants.
Luca Romani, Alessandro Bianchini, Giovanni Vichi, Alessandro Bellissima, Giovanni Ferrara   +4 more
doaj   +1 more source

Recent progress in high pressure metrology in Europe

EPJ Web of Conferences, 2014
Five European national metrology institutes in collaboration with a university, a research institute and five industrial companies are working on a joint research project within a framework of the European Metrology Research Programme aimed at ...
Sabuga Wladimir, Pražák Dominik, Rabault Thierry   +2 more
doaj   +1 more source

DEPENDENCE OF AIR SPRING PARAMETERS ON THROTTLE RESISTANCE

Nauka ta progres transportu, 2016
Purpose. In this paper it is necessary to conduct: 1) research and analyse the influence of throttle element pneumatic resistance on elastic and damping parameters of air spring; 2) to obtain the dependence of air spring parameters on throttle element ...
O. H. Reidemeister, A. V. Kivisheva
doaj   +1 more source