Inefficiency predictions in a hypoid gear pair through tribodynamics analysis

Inefficiency predictions in a hypoid gear pair through tribodynamics analysis A tribo-dynamics model, predicting the conjunctional inefficiency and dynamic response of automotive hypoid gear pairs is presented (dynamics coupled with analytical viscous and boundary friction models). The temperature rise at the centre of the conjunction is accounted for using a thermal network model and Time Temperature Superposition (TTS) method. Newtonian and non-Newtonian lubricant shear behaviour are considered with surface topography measurements of a run-in pinion. Inefficiency calculations are performed for typical automotive drive cycle snapshots. Precisely measured lubricant shear characterstics for lubricants with different viscosity modifiers and evolving surface topography are used in the transmission inefficiency study. The integrated thermal-tribodynamic analysis is shown to distinguish between different viscosity modifier types, an approach not hitherto reported in literature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tribology International Elsevier

Inefficiency predictions in a hypoid gear pair through tribodynamics analysis

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier Ltd
ISSN
0301-679X
eISSN
1879-2464
D.O.I.
10.1016/j.triboint.2017.11.035
Publisher site
See Article on Publisher Site

Abstract

A tribo-dynamics model, predicting the conjunctional inefficiency and dynamic response of automotive hypoid gear pairs is presented (dynamics coupled with analytical viscous and boundary friction models). The temperature rise at the centre of the conjunction is accounted for using a thermal network model and Time Temperature Superposition (TTS) method. Newtonian and non-Newtonian lubricant shear behaviour are considered with surface topography measurements of a run-in pinion. Inefficiency calculations are performed for typical automotive drive cycle snapshots. Precisely measured lubricant shear characterstics for lubricants with different viscosity modifiers and evolving surface topography are used in the transmission inefficiency study. The integrated thermal-tribodynamic analysis is shown to distinguish between different viscosity modifier types, an approach not hitherto reported in literature.

Journal

Tribology InternationalElsevier

Published: Mar 1, 2018

References

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