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Design of a Verification Device of Motor Axle Wheel Load Scales Based on Pump-Controlled Hydraulic Cylinder [PDF]
SensorsVehicle axle load scales are one of the most important devices for vehicle safety testing. To ensure the stability and reliability of test results, regular calibration of axle load scales is necessary.
Long Hao +3 more
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Study on the influence of working condition variation on lubrication characteristics of EHA internal pump [PDF]
Scientific ReportsThe operational characteristics of Electro-Hydraulic Actuator(EHA) result in the EHA internal pump facing complex conditions of variable speed, pressure and even direction, resulting in poor lubrication state of friction pairs.
Yantao Zhang +3 more
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Jixie chuandongIn order to effectively relieve the trapped-oil phenomenon of external gear-pumps and gear-motors, based on its constant output capacity, by analyzing the influence of large modulus under equal displacement on the load flow, leakage flow and unloading ...
Liu Ping, Li Yulong, Song Anran
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Design Method with High Comprehensive Performance for External Gear-pumps and Gear-motors
Jixie chuandongUnder the premise of ensuring constant output capacity and equal displacement, in order to improve the comprehensive performance of the external gear-pumps and gear-motors, the relation between the constructed equal displacement and gear profile ...
Li Yulong, Liu Ping, Shi Yunyang
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Cointegration Approach for Vibration-Based Misalignment Detection in Rotating Machinery Under Varying Load Conditions [PDF]
SensorsShaft misalignment is among the most common faults in rotating machinery, and although many diagnostic methods have been proposed, reliably detecting it under varying load conditions remains a major challenge for vibration-based techniques.
Sylwester Szewczyk +4 more
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A feasibility and dynamic performance analysis of hydromechanical hybrid power transmission technology for wind turbines [PDF]
Mechanical Sciences, 2023 A multi-body dynamical model of a wind turbine power generation system (WTPGS) based on hydromechanical hybrid power transmission (HMHPT) technology is developed and simulated to overcome the individual drawbacks of the gear train and hydrostatic power ...
D. Kumar, A. C. Mahato
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Sensors, 2022 In this study, we designed a new type of digital hydraulic transformer using four gear–pump/motor units with a displacement ratio of 20:21:22:23 and two control valve groups that consist of four solenoid directional valves. The driving gear shafts of the
Weijian Li +5 more
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Degradation of Hydraulic System due to Wear Particles or Medium Test Dust
Applied Sciences, 2023 Contamination in hydraulic systems is the cause of 70% of failures. This study highlights the performance degradation caused by solid particle contamination of hydraulic components: hydraulic gear pump, 4/3 valve, and orbital motor.
Nejc Novak +3 more
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Transport, 2022 Gear pumps are widely used in transport machines not only in hydraulic drive systems, but also in lubrication and fuel systems. A positive displacement pump converts mechanical energy into pressure energy stored in the liquid, which it transports to the
Rafał Cieślicki, Mykola Karpenko
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Journal of Marine Science and Engineering, 2022 The deep-sea environment has the characteristics of high pressure and low temperature. In addition to the extremely high requirements on the structural reliability, the ultra-high ambient pressure also has a great impact on the working characteristics of
Yongqiang Tian +4 more
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