Control of spray evaporative cooling in automotive IC engines

Jafari, S, Dunne, J, Langari, M, Yang, Z, Pirault, J, Long, C and Thalackottore Jose, J (2018) Control of spray evaporative cooling in automotive IC engines. Journal of Thermal Science and Engineering Applications, 10 (4). pp. 1-11. ISSN 1948-5085

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A novel approach is proposed for precise control of two-phase spray evaporative cooling for thermal management of road vehicle internal combustion engines. A reduced-order plant model is first constructed by combining published spray evaporative cooling correlations with approximate governing heat transfer equations appropriate for IC engine thermal management. Control requirements are specified to allow several objectives to be met simultaneously under different load conditions. A control system is proposed and modelled in abstract form to achieve spray evaporative cooling of a gasoline engine, with simplifying assumptions made about the characteristics of the coolant pump, spray nozzle, and condenser. The system effectiveness is tested by simulation to establish its ability to meet key requirements, particularly concerned with precision control during transients resulting from rapid engine load variation. The results confirm the robustness of the proposed control strategy in accurately tracking a specified temperature profile at various constant load conditions, and also in the presence of realistic transient load variation.

Item Type: Article
Keywords: Engine cooling, road vehicles, evaporative sprays, precision control, robustness.
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Dynamics, Control and Vehicle Research Group
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ0212 Control engineering systems. Automatic machinery (General)
T Technology > TJ Mechanical engineering and machinery > TJ0255 Heat engines
T Technology > TL Motor vehicles. Aeronautics. Astronautics
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Depositing User: Julian Dunne
Date Deposited: 01 Feb 2018 09:19
Last Modified: 24 Jul 2018 15:10

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Project NameSussex Project NumberFunderFunder Ref
Evaporative Cooling of Internal Combustion EnginesG1473EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCILEP/M005755/1