Conference article

Predicting the Effect of Gearbox Preconditioning on Vehicle Efficiency

Romain Gillot
Claytex Services Ltd. Edmund House, Rugby Road, Leamington Spa, UK

Alessandro Picarelli
Claytex Services Ltd. Edmund House, Rugby Road, Leamington Spa, UK

Mike Dempsey
Claytex Services Ltd. Edmund House, Rugby Road, Leamington Spa, UK

Download articlehttp://dx.doi.org/10.3384/ecp15118135

Published in: Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015

Linköping Electronic Conference Proceedings 118:14, s. 135-141

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Published: 2015-09-18

ISBN: 978-91-7685-955-1

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

Under extreme climatic conditions, the vehicle fuel consumption can be far from the certified value. Given the growing concern for polluting emissions, it is necessary to investigate a way to improve the vehicle global efficiency and thus close the emissions and fuel consumption gap. A solution is to pre-warm the gearbox in order to make it work at optimal temperature to get the best efficiency possible. Indeed, low lubricant temperature is a source of low vehicle performance due to the viscosity exponentially rising at very low temperature. Using the Powertrain Dynamics library, a vehicle model with a detailed equation based gearbox model taking into account the temperature-dependent losses is developed.

Keywords

Gearbox; pre-warming; efficiency; fuel consumption; oil temperature

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