Influence of outflow of oil on work of hydro machines

2020 ◽  
pp. 11-17
Author(s):  
A. I. Petrashev ◽  
V. V. Klepikov
Keyword(s):  
Hydraulic System ◽  
Hydraulic Oil

Influence of outflow of oil on its heating and decrease of useful capacity of the pump in hydraulic system of a tractor at work with the hydro motor is shown. The system of stabilization of temperature of hydraulic oil is necessary for steady work of the hydro motor.

scholarly journals A new process to develop a hydraulic system adapted to biodegradable hydraulic oil for construction machinery

2021 ◽  
Vol 12 (2) ◽  
pp. 56-74
Author(s):  
Satoshi OHKAWA ◽  
Sunkil YUN ◽  
Taketoshi HIBIYA ◽  
Hidekazu NISHIMURA
Keyword(s):  
Hydraulic System ◽  
Construction Machinery ◽  
Hydraulic Oil ◽  
New Process

The Retrospects and Prospects of Pure Water Hydraulic Technology

2012 ◽  
Vol 201-202 ◽  
pp. 979-982 ◽  
Author(s):  
Feng Xu ◽  
Li Xiang Zhang
Keyword(s):  
Hydraulic System ◽  
Low Cost ◽  
Pure Water ◽  
Chemical Properties ◽  
Simple System ◽  
Hydraulic Oil ◽  
Physico Chemical ◽  
Water Hydraulic ◽  
Research Situation ◽  
The Ideal

Pure water hydraulic technology attracts more and more attention of people due to no pollution, low cost, simple system, and many other advantages. This paper compares physico-chemical properties between pure water and hydraulic oil, concludes that pure water is the ideal medium for hydraulic system. Then it discusses the development of pure water hydraulic technology, introduces the present research situation and development of pure water hydraulic components from home to abroad in the future.

Research on Rapid Detection and Accounting of Small Particles in Marine Hydraulic Oil

2015 ◽  
Vol 645-646 ◽  
pp. 687-692
Author(s):  
Lin Zeng ◽  
Hong Peng Zhang ◽  
En Chen Liu ◽  
Hai Quan Chen ◽  
Fang Yu Cui
Keyword(s):  
Signal Amplification ◽  
Rapid Detection ◽  
Hydraulic System ◽  
Detection System ◽  
Iron Particles ◽  
Small Particles ◽  
Hydraulic Oil ◽  
Java Programming ◽  
Optical Detection System ◽  
Number Of Particles

Hydraulic system is widely used in the ship, when the diameter of tiny particles in hydraulic oil exceeds 20μm it indicates that the abnormal wear occurred and the malfunction may cause. This paper uses the light blockage method, the microfluidic detection chip for hydraulic oil detection has been designed and fabricated, a simple and effective optical detection system is developed with the signal amplification and data collection to achieve the detection of tiny particles, and finally through the JAVA programming to count the number of particles in which the diameter is more than 20μm. The results of rapid detections on iron particles with diameter between 25μm and 38μm show the good performance of the detection system and prove that the method is feasible.

The Application of Oil Monitoring Technology in the Marine Hydraulic System

2014 ◽  
Vol 628 ◽  
pp. 287-292 ◽  
Author(s):  
Bin Sun ◽  
Xin Cong Zhou
Keyword(s):  
Basic Principle ◽  
Hydraulic System ◽  
Oil Pollution ◽  
Monitoring Technology ◽  
Hydraulic Oil ◽  
Oil Monitoring

This paper discusses the source and harm of the hydraulic oil pollution, the connotation of oil monitoring technology, methods, instruments and basic principle of the oil monitoring, and states the feasibility and importance of oil monitoring technology from two failure cases in the hydraulic system of the ship.

Research on Hydraulic System Contamination in Different Wear Stages Based on Factor Analysis

2014 ◽  
Vol 543-547 ◽  
pp. 232-235
Author(s):  
Ge Wang ◽  
Dong Feng Liu ◽  
Zhi Cai Zhou
Keyword(s):  
Factor Analysis ◽  
Hydraulic System ◽  
The Other ◽  
Hydraulic Oil ◽  
Large Size ◽  
Factory Test ◽  
Two Factors ◽  
Equipment Factory

Every ship will face an extension run-in stage after equipment factory test. In the paper, adjustable pitch propeller of the two ships in different wear processes are selected for the experiment and the features of hydraulic oil are obtained. With FA (factor analysis), the features of the contamination can be represented by two feature factors, large size particles factor and small size particles factor. According to comparison of the contribution of the ships two factors, large size particles factor of the ship in extension run-in stage have much more influence on the hydraulic oils status than the other ship.

Promoting Sustainability through Water Hydraulic Technology – The Effect of Water Hydraulic in Industrial Scissor Lift

2013 ◽  
Vol 315 ◽  
pp. 488-492 ◽  
Author(s):  
Ahmad Anas Yusof ◽  
Shafizal Mat ◽  
Abdul Talib Din
Keyword(s):  
Molecular Structure ◽  
Hydraulic System ◽  
Maintenance Cost ◽  
Test Rig ◽  
Transfer Energy ◽  
Hydraulic Oil ◽  
Effect Of Water ◽  
Low Viscosity ◽  
System A ◽  
Water Hydraulic

Sustainability concern has brought the idea of exploring the possibility of using water as the hydraulic medium to transfer energy. The abundant resource of water, and its characteristic involving hygiene, safety and low maintenance cost provides a fascinating perspective of choosing water over hydraulic oil, due to concerns over oil disposal, contamination, costly maintenance and flammability. However, in contrast, its low boiling temperature, low viscosity, and simple molecular structure could pose danger to the operation of the hydraulic system. In order to identify these limitations, an experimental study is carried out to explore the effect of water hydraulic system. A test rig of scissor lift is fabricated and put into test by replacing the hydraulic oil with reverse osmosis water. It is found that the water hydraulic scissor lift managed to lift up to 400 kg of load, with workable water temperature of 41.4°C.

Influence of RBD Palm Olein on Hydraulic Pump Performance

2014 ◽  
Vol 931-932 ◽  
pp. 403-407
Author(s):  
Weerapong Chanbua ◽  
Unnat Pinsopon
Keyword(s):  
Energy Efficiency ◽  
Flow Rate ◽  
Hydraulic System ◽  
Palm Olein ◽  
Potential Candidate ◽  
Hydraulic Systems ◽  
Hydraulic Pump ◽  
Hydraulic Oil ◽  
Rbd Palm Olein ◽  
Accredited Laboratory

At the present time, researchers try to find alternative fluids for being used as lubricants or hydraulic fluids that are biodegradable and environmental friendly. In this study, Refined-Bleached-Deodorized (RBD) palm olein was investigated whether it is such a potential candidate. RBD palm olein could be easily acquired since it is of the type used as cooking oil. The physical properties of both conventional hydraulic oil and RBD palm olein were tested and compared by an accredited laboratory. The performance of the hydraulic systems when using both fluids as working mediums were also tested and compared. The experimental results show that temperature significantly affected the performance of the hydraulic system when using conventional hydraulic oil, whereas the performance of the hydraulic system when using RBD palm olein barely changed with temperatures. At the temperatures below 60 °C, the RBD palm olein yielded less flow rate and less energy efficiency. However, for the temperatures above 60 °C, the RBD palm olein yielded slightly more flow rate and slightly more energy efficiency. It can be confirmed from this study that RBD palm olein can be used as an alternative hydraulic fluid.

Design of the Microfluidic Chip of Oil Detection

2011 ◽  
Vol 117-119 ◽  
pp. 517-520 ◽  
Author(s):  
Hong Peng Zhang ◽  
Wen Huang ◽  
Yin Dong Zhang ◽  
Yan Shen ◽  
Dong Qing Li
Keyword(s):  
Line Width ◽  
Microfluidic Chip ◽  
Hydraulic System ◽  
Wear Debris ◽  
Metallic Particle ◽  
Information Carrier ◽  
Hydraulic Oil ◽  
Particle Flows ◽  
Chip Technology ◽  
Coil Geometry

Wear debris in hydraulic oil causes most of the faults of hydraulic system and is also an important information carrier, so it is essential to check the condition of wear debris in hydraulic oil. On the basis of inductive principle and microfluidic chip technology, the design of a microfluidic chip of oil detection is presented in this paper. the relation between coil geometry parameters and inductive change of planar inductor are analyzed through the related experimental statistics, the result being that when the ferrous metallic particle flows through planar inductor, the measured inductance variation increases with the number of turns and decreases with the coil line width.

scholarly journals A new process to develop a hydraulic system adapted to biodegradable hydraulic oil for construction machinery

Synthesiology ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 57-74
Author(s):  
Satoshi OHKAWA ◽  
Sunkil YUN ◽  
Taketoshi HIBIYA ◽  
Hidekazu NISHIMURA
Keyword(s):  
Hydraulic System ◽  
Construction Machinery ◽  
Hydraulic Oil ◽  
New Process

Research on Oil Temperature Control Technology of Mobile Machinery in Closed Hydraulic Transmission System

2014 ◽  
Vol 1037 ◽  
pp. 274-277 ◽  
Author(s):  
Xi Yin Lou
Keyword(s):  
Hydraulic System ◽  
Normal Operation ◽  
Oil Viscosity ◽  
Hydraulic Oil ◽  
Damping Effect ◽  
Environment Temperature ◽  
Reliability Control ◽  
Mobile Machinery ◽  
Working Performance ◽  
The Stability

Hydraulic oil temperature with the system condition, environment temperature and heat exchange characteristics, is one of the most significant parameters affecting the performance of hydraulic system. Oil temperature directly changes oil viscosity and leakage characteristics, which affects the damping effect on system performance of hydraulic oil ratio, thereby affects the stability of the hydraulic system and dynamic response. At the same time, it also can cause the seal metamorphism and oil oxidation failure, which causes corrosion and formation of sediments, which affect the normal operation of the system, even brings harm to the equipment. Therefore, improving the working performance and reliability control through the analysis of hydraulic oil temperature is necessary.

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