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Thermal modeling in an engine cooling system to control coolant flow for fuel consumption improvement

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Abstract

The design and evaluation of engine cooling and lubrication systems is generally based on real vehicle tests. Our goal here was to establish an engine heat balance model based on mathematical and interpretive analysis of each element of a passenger diesel engine cooling system using a 1-D numerical model. The purpose of this model is to determine ways of optimizing the cooling and lubrication components of an engine and then to apply these methods to actual cooling and lubrication systems of engines that will be developed in the future. Our model was operated under the New European Driving Cycle (NEDC) mode conditions, which represent the fuel economy evaluation mode in Europe. The flow rate of the cooling system was controlled using a control valve. Our results showed that the fuel efficiency was improved by as much as 1.23 %, cooling loss by 1.35 %, and friction loss by 2.21 % throughout NEDC modes by modification of control conditions.

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Acknowledgments

This work was supported by the Mid-Career Researcher Program through a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP). No. NRF-2014R1A2A2A01005055.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Hanyang University, 1271 Sa1-dong, Sangrok-gu, Gyeonggi-do, 426-791, Korea

    Sangki Park, Seungchul Woo, Minho Kim & Kihyung Lee

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  1. Sangki Park
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  2. Seungchul Woo
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  3. Minho Kim
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  4. Kihyung Lee
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Correspondence to Kihyung Lee.

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Park, S., Woo, S., Kim, M. et al. Thermal modeling in an engine cooling system to control coolant flow for fuel consumption improvement. Heat Mass Transfer 53, 1479–1489 (2017). https://doi.org/10.1007/s00231-016-1909-z

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  • DOI: https://doi.org/10.1007/s00231-016-1909-z

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