A Model for the Prediction of Churning Losses in Geared Transmissions—Preliminary Results

A Model for the Prediction of Churning Losses in Geared Transmissions—Preliminary Results

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, an...

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Veröffentlicht in:Journal of mechanical design (1990) 2007-01, Vol.129 (1), p.128-133
Hauptverfasser: Changenet, C., Velex, P.
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Engineering Sciences
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container_title Journal of mechanical design (1990)
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creator Changenet, C.
Velex, P.
description 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.
doi_str_mv 10.1115/1.2403727
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title A Model for the Prediction of Churning Losses in Geared Transmissions—Preliminary Results
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