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Churning power losses of a gearbox with spiral bevel geared transmission
Tribology International, 2019Abstract To predict the churning power losses in a gearbox with spiral bevel geared transmission, based on the Computational Fluid Dynamics (CFD) method, a numerical simulation model for the splash lubrication of the intermediate gearbox of a helicopter including gear box housing, a spiral bevel gear pair and an oil guide device is established and ...
Xiaozhou Hu, Yiyao Jiang, Yu Dai
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Development of an analytical model to estimate the churning power losses of a spiral bevel gear
Tribology International, 2020Abstract A quasi-analytical model based on fluid mechanics is established to estimate the no-load power losses of a spiral bevel gear with splash lubrication. The no-load losses are defined as the sum of churning power loses and windage power losses.
Xiang Zhu
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A Novel Prediction Model for Churning Power Loss of Spur Gear
Lubrication ScienceABSTRACTThe prediction of churning power loss has been a difficult problem in the analysis of spur gears. Thus, an analytical prediction model based on the redefinition of churning power loss and energy transformation is proposed to estimate the churning power of spur gears. Churning power loss is defined as the combination of the power loss due to the
Fuchun Jia
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Determination of oil distribution and churning power loss of gearboxes by finite volume CFD method
Tribology International, 2017Abstract Sufficient oil supply of all machine elements in gearboxes is usually required to avoid damage and to reduce friction during operation. However, dip lubrication and injection lubrication always result in hydraulic gear power losses. Especially in high-speed and dip-lubricated gearboxes with high oil levels, churning losses can represent a ...
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Abstract Worm gears have very high total power losses due to high sliding motion and strong reduction ratio resulting in low efficiency. It is currently assumed that the total power loss (TPL) is caused by the load dependent losses; it is not caused by any non-load dependent losses.
Hardik G. Chothani, Kalpesh D. Maniya
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Abstract In this study gear oils were tested for power loss behaviour in a two stage multiplying gearbox, on a back-to-back test rig with recirculating power. The tests were performed at low input speeds and high input torques with oil sump temperature set free. A power loss model simulating the power loss mechanisms was implemented to evaluate gear
Pedro M T Marques +2 more
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Numerical study on the churning power loss of spiral bevel gears at splash lubrication system
Lubrication ScienceAbstractIn order to predict the spiral bevel gear churning power loss, based on the Computational Fluid Dynamics (CFD) method, the computational model for the splash lubrication of the spiral bevel gear pair is established and validated by experiments.
Shuai Hu, Wuqi Gong, Peng Gui
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