Predicting the effect of powertrain preconditioning on vehicle efficiency. Issue 3 (4th May 2017)

• Record Type: Journal Article
• Authors: Gillot, Romain; Dempsey, Mike; Picarelli, Alessandro
• Is Part Of: Mathematical and computer modelling of dynamical systems. Volume 23:Issue 3(2017)
• Page Start: 301
• Page End: 318
• Publication Date: 2017-05-04
• Subjects: Powertrain -- pre-warming -- efficiency -- fuel consumption -- emissions; Engineering -- Mathematical models -- Periodicals; Computer simulation -- Periodicals; 515.39
• DOI: 10.1080/13873954.2017.1298626
• Languages: English
• ISSNs: 1387-3954

Abstract

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 overall vehicle efficiency and thus reduce the emissions and fuel consumption gap. One solution is to pre-warm the gearbox and the engine in order to make it work at an optimal temperature to achieve the best efficiency possible. Indeed, low lubricant temperature is a source of reduced vehicle efficiency due to the lubricant viscosity rising exponentially 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 and a map-based engine including temperature-dependent emission models (CO, NOx, HC and particulates) is developed.