Results 11 to 20 of about 11,467 (264)
Agriculture, 2023 Recent carbon neutrality policies have led to active research in the agricultural tractor sector to replace internal combustion engines, making it imperative to minimize power losses to improve efficiency.
Hyoung-Jong Ahn +3 more
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Influence of Piston Number on Churning Losses in Axial Piston Pumps
Chinese Journal of Mechanical Engineering, 2022 Raising the rotational speed of an axial piston pump is useful for improving its power density; however, the churning losses of the piston increase significantly with increasing speed, and this reduces the performance and efficiency of the axial piston ...
Ying Li +4 more
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A model formulation for the prediction of churning power loss in worm gear transmission
Tribology and Materials, 2022 Churning power loss is a complex process that causes significant loss of energy under splash lubrication of gear units. A set of empirical equations are available that allows for precise churning power losses calculation for only the parallel axis gears.
Hardik Chothani, Kalpesh Maniya
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An Experimental Investigation of Churning Power Losses of a Gearbox
Volume 10: 2017 ASME International Power Transmission and Gearing Conference, 2017 In this study, load-independent (spin) power losses of a gearbox operating under dip-lubrication conditions are investigated experimentally using a final-drive helical gear pair from an automotive transmission as the example system. A dedicated gearbox is developed to operate a single gear or a gear pair under given speed and temperature conditions.
J. Polly +4 more
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Lubrication mechanism in gearbox of high-speed railway trains
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2020 In this study, the moving particle semi-implicit (MPS) method is employed for numerical simulation of flow field in gearbox of high-speed railway trains so as to understand the lubrication mechanism and mode in the gearbox during high-speed operation.
Xingqiao DENG +7 more
doaj +1 more source
The detection of lubricating oil viscosity changes in gearbox transmission systems driven by sensorless variable speed drives using electrical supply parameters [PDF]
, 2015 Lubrication oil plays a decisive role to maintain a reliable and efficient operation of gear transmissions. Many offline methods have been developed to monitor the quality of lubricating oils.
A D Ball +19 more
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Innovative Meshing Strategies for Bearing Lubrication Simulations
Lubricants, 2020 Efficiency improvement is the new challenge in all fields of design. In this scenario the reduction of power losses is becoming more and more a main concern also in the design of power transmissions.
Franco Concli +2 more
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Thermal Performance Evaluation in Gas Turbine Aero Engines Accessory Gearbox
International Journal of Turbomachinery, Propulsion and Power, 2020 This paper presents a methodological approach for mathematical modelling and physics-based analysis of accessory gearbox (AGB) thermal behavior in gas turbine aero engines. The AGB structure, as one of the main sources of heat in gas turbine aero engines,
Soheil Jafari +2 more
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Journal of Tribology, 2020 Abstract Oil sump lubrication is commonly used in gearboxes. When considering consistent speeds, oil immersion is usually set to low level in order to reduce associated power losses. This configuration is already used in some parts of helicopter mechanical transmissions, and it is under consideration as a lubrication solution for future ...
Quiban, Romain +3 more
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Power loss analysis in altered tooth-sum spur gearing
MATEC Web of Conferences, 2018 The main cause of power loss or dissipation of heat in case of meshed gears is due to friction existing between gear tooth mesh and is a major concern in low rotational speed gears, whereas in case of high operating speed the power loss taking place due ...
Sachidananda H. K. +2 more
doaj +2 more sources