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Tae-Youl Jeon and Byung-Gun Jung
Since the variable-speed seawater pump and the three-way valve of a ship?s central cooling system are forms of feedback from the same output signal, these controllers may cause interference when they are not coordinated. Therefore, studying an efficient ...
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Ligang Huang, Tian Yu, Zongxia Jiao and Yanpeng Li
In the flight control system, using an electro-hydrostatic actuator (EHA) instead of the currently used relatively mature electro-hydraulic valve-controlled actuator, there are three prevailing concerns, namely heating, size, and stiffness. This paper pr...
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Natig Seyidahmadov
Pág. 17 - 21
To increase the efficiency of gas-lift oil and gas production, it is necessary to improve the operation of compressor stations, namely, to increase the reliability of the gas-motor piston compressor units installed in them. It is found that one of the vu...
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Heorhii Kulinchenko,Andrii Mssliennikov,Viktor B?hut?,Vladymir Chervyakov
Pág. 36 - 44
The operation features of the stop valve electric drive are analyzed. It is found that the drive of stop valves, implemented on the basis of induction motors, is characterized by low energy efficiency. For the purposeful improvement of the energy efficie...
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Oleksii Havrylenko,Serhii Kulinich
Pág. 30 - 37
A hydraulic drive with two hydraulic cylinders was considered in which the rod movement speeds are synchronized by a divider of the working fluid flow. Based on the developed mathematical model, operation of synchronized hydraulic cylinders in transient ...
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Heejang Moon, Seongjoo Han, Youngjun You and Minchan Kwon
This paper presents an attempt to use the hybrid rocket for marine applications with a 500 N class hybrid motor. A 5-port high density polyethylene (HDPE) fuel grain was used as a test-bed for the preliminary assessment of the underwater boosting device....
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The present study provides a feasible strategy for minimizing automotive CO2 emissions by coupling the principle of the Atkinson cycle with the use of bioethanol fuel. Motor cycles and scooters have a stroke to bore ratio of less than unity, w...
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Chongbo Jing, Junjie Zhou, Shihua Yuan and Siyuan Zhao
This paper presents a theoretical model and its experimental validation for the pressure ratio of a swash plate-rotating hydraulic transformer. The structure and principle of the new type of transformer are described. The swash plate-rotating type can re...
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A. E. Drubetskyi
Pág. 166 - 171
The peculiarities of structure and calculation of the semiconductor rectifier electric engine with beak-shaped poles have been considered.
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