Results 21 to 30 of about 113,834 (330)

Lubrication system of a roller cone bit [PDF]

open access: yesMATEC Web of Conferences, 2020
For drilling roller bits that work with face purging, a device for a circulating lubrication system is proposed through the use of a plunger pump. A constant circulation of the lubricant is realized with a performance proportional to the speed of the bit.
Simisinov Denis   +3 more
doaj   +1 more source

Coarsening rates for the dynamics of slipping droplets [PDF]

open access: yes, 2012
We derive reduced finite dimensional ODE models starting from one dimensional lubrication equations describing coarsening dynamics of droplets in nanometric polymer film interacting on a hydrophobically coated solid substrate in the presence of large ...
GEORGY KITAVTSEV, Kitavtsev
core   +1 more source

Comparative analysis of emulsion pump stations of RMI and KAMAT

open access: yesGong-kuang zidonghua, 2019
Overall structure of KAMAT pump station and RMI pump station which have high domestic market share were introduced. Key technologies in terms of deceleration system, hydraulic system, lubrication system, protection system and control system were ...
YE Jia
doaj   +1 more source

Numerical Modeling of Hydrodynamic Processes in the Gerotor Pump of the Lubrication System of Diesel Engines

open access: yesМеханика машин, механизмов и материалов
This article presents the results that serve as a methodological basis for creating a digital twin of a diesel engine lubrication system. At the first stage, mathematical and computer models have been created for the oil pump of the engine lubrication ...
Igor A. Popov   +6 more
doaj   +1 more source

Influence of the balancing of the oil supply to the connecting bearings on their operations failures

open access: yesИнтеллект. Инновации. Инвестиции, 2019
The relevance of the study is due to the need to study the laws of processes and phenomena leading to disruption of the normal functioning of the connecting rod bearings of automobile engines in operation and causing sudden costly failures.
A.T. Kulakov   +2 more
doaj   +1 more source

Lubrication at physiological pressures by polyzwitterionic brushes [PDF]

open access: yes, 2009
The very low sliding friction at natural synovial joints, which have friction coefficients of mu < 0.002 at pressures up to 5 megapascals or more, has to date not been attained in any human-made joints or between model surfaces in aqueous environments ...
Briscoe   +22 more
core   +1 more source

Atomically thin MoS2 with ultra-low friction properties based on strong interface interaction

open access: yesFriction
Atomically thin lubrication materials with anti-friction properties are crucial for reducing energy consumption and extending the service life of micro/nanoelectromechanical systems (MEMS/NEMS).
Xinjian He   +10 more
doaj   +1 more source

Synovial joint lubrication – does nature teach more effective engineering lubrication strategies? [PDF]

open access: yes, 2007
Nature shows numerous examples of systems which show energy efficiency, elegance in their design and optimum use of materials. Biomimetics is an emerging field of research in engineering and successes have been documented in the diverse fields of ...
Liskiewicz, T.   +3 more
core   +1 more source

Electrostatic Sensor Application for On-Line Monitoring of Wind Turbine Gearboxes

open access: yesSensors, 2018
The oil-line electrostatic sensor (OLES) is a new online monitoring technology for wear debris based on the principle of electrostatic induction that has achieved good measurement results under laboratory conditions.
Huijie Mao, Hongfu Zuo, Han Wang
doaj   +1 more source

Two-speed wheel-drive system without lubrication [PDF]

open access: yes, 1970
System based on sprockets and toothed belts provides high and low speeds in forward drive and high speed in reverse.
Burch, J. L.
core   +1 more source

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