A Model for the Prediction of Churning Losses in Geared Transmissions—Preliminary Results
- 21 August 2006
- journal article
- Published by ASME International in Journal of Mechanical Design
- Vol. 129 (1), 128-133
- https://doi.org/10.1115/1.2403727
Abstract
A series of formulas are presented which enable accurate predictions of churning losses for one pinion characteristic of automotive transmission geometry. The results are based on dimensional analysis and have been experimentally validated over a wide range of speeds, gear geometries, lubricants, and immersion depths. The case of a pinion-gear pair in mesh has been considered, and it has been proved that, depending on the sense of rotation, the superposition of the individual losses of the pinion and of the gear leads to erroneous figures. A new formula devoted to a pinion and gear rotating anticlockwise has been derived and validated by comparison with experimental evidence.Keywords
This publication has 7 references indexed in Scilit:
- Power Loss Predictions in Geared Transmissions Using Thermal Networks-Applications to a Six-Speed Manual GearboxJournal of Mechanical Design, 2005
- Experimental and Numerical Investigations on the Air-Pumping Phenomenon in High-Speed Spur and Helical GearsProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2005
- Windage Losses in High Speed Gears—Preliminary Experimental and Theoretical ResultsJournal of Mechanical Design, 2004
- The Measurement of Surface Temperatures on Gear TeethJournal of Basic Engineering, 1965
- Friction Drag on Bladed Disks in Housings as a Function of Reynolds Number, Axial and Radial Clearance, and Blade Aspect Ratio and SolidityJournal of Basic Engineering, 1961
- Chamber Dimension Effects on Induced Flow and Frictional Resistance of Enclosed Rotating DisksJournal of Basic Engineering, 1960
- Laminar Flow Over an Enclosed Rotating DiskJournal of Fluids Engineering, 1958