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A Contribution to Improving the Thermal Management of Powertrain Systems
ISSN: 1946-3936, e-ISSN: 1946-3944
Published October 08, 2019 by SAE International in United States
Citation: Castiglione, T., Perrone, D., Algieri, A., and Bova, S., "A Contribution to Improving the Thermal Management of Powertrain Systems," SAE Int. J. Engines 13(1):35-48, 2020, https://doi.org/10.4271/03-13-01-0003.
This work presents a generalized methodology for the optimal thermal management of different powertrain devices. The methodology is based on the adoption of an electrically driven pump and on the development of a specifically designed controller algorithm. This is achieved following a Model Predictive Control approach and requires a generalized lumped-parameters model of the thermal exchange between the device walls and the coolant. The methodology is validated at a test rig, with reference to a four-cylinder spark-ignition engine. Results show that the proposed approach allows a reduction in fuel consumption of about 2-3% during the engine warm-up, a decrease in fuel consumption of about 1-2% during fully warmed operation, and an estimated fuel consumption reduction of about 2.5-3% in an NEDC. Finally, the investigation highlights that the proposed approach reduces the risk of after-boiling when the engine is rapidly switched off after a prolonged high-load operation.