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Theses

Etude de la performance énergetique d’une transmission de puissance haute vitesse

Abstract : A way to improve both electric and hybrid vehicles is to use high speed motors, operating over than 42.000rpm. The goal is to increase the power density and the efficiency of powertrains. Using these new motors, new gearboxes should be developed. This must be done without generating significant additional cost regarding already mastered low speed solutions. High energy performance level also has to be maintained. This PhD comes before the design phase of a high-speed oil bath lubricated gearbox. It aims to identify the warm-up and power loss problems, and propose ways to improve efficiency. This work proposes a thermomechanical modelling of the gearbox’s first stage, using the thermal network method. This model links power losses with temperatures. Particular attention is paid to high speed bearing modelling. A new thermomechanical model of rolling element bearing is developed. As churning losses being significant at high speeds, a method to greatly reduce this power loss is characterized.
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https://tel.archives-ouvertes.fr/tel-01736292
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Submitted on : Friday, March 16, 2018 - 5:11:23 PM
Last modification on : Wednesday, July 8, 2020 - 12:42:36 PM
Long-term archiving on: : Tuesday, September 11, 2018 - 7:11:30 AM

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  • HAL Id : tel-01736292, version 1

Citation

Adrien Neurouth. Etude de la performance énergetique d’une transmission de puissance haute vitesse. Mécanique [physics.med-ph]. Université de Lyon, 2016. Français. ⟨NNT : 2016LYSEI017⟩. ⟨tel-01736292⟩

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