Smart Engine Coolant Thermal Management Strategy During Engine Warm-up Period
Galip Kaltakkıran


Instantaneous energy balance
Coolant flow rate
Thermal energy management
Engine cooling System
SI engine

How to Cite

Kaltakkıran, G. (2021). Smart Engine Coolant Thermal Management Strategy During Engine Warm-up Period. International Journal of Innovative Research and Reviews, 5(2), 78-85. Retrieved from


Various thermal energy management strategies and research on energy efficiency in internal combustion engines are carried out intensively. In this study, a type of thermal energy management strategy is investigated in relation to the application of coolant flow rate control. An electric pump is integrated into the system for commissioning when necessary to provide controlled flow. In the thermal energy management strategy approach, experiments were carried out on a gasoline-fueled spark-ignition test engine under different engine load and continuously variable speed conditions. A total of four different configurations were tried, the classical system component being with a mechanical pump and an integrated electric water pump. Warm up time with coolant flow control strategy in experiments carried out under different loads5.34% and 6.2% improved. In addition, energy balance analysis and performance characteristics of the engine during the warm-up phase were analyzed and it was seen that it had positive effects on CO exhaust emissions. Warm up time improved by 5.34% and 6.2% under different loads. Thus, the benefits of the coolant control strategy compared to the classical system are examined in detail.



[1] Kuboyama T, Moriyoshi Y, Iwasaki M, Hara J, Effect of coolant water and intake air temperatures on thermal efficiency of a spark ignition engine, in The SICE Annual Conference 2013, 2013, 385-388.
[2] Caresana F, Bilancia M, Bartolini CM. Numerical method for assessing the potential of smart engine thermal management: Application to a medium-upper segment passenger car. Applied Thermal Engineering 2011;31(16):3559-3568. 10.1016/j.applthermaleng.2011.07.017.
[3] Hölz P, Böhlke T, Krämer T. Determining water mass flow control strategies for a turbocharged SI engine using a two-stage calculation method. Applied Thermal Engineering 2019;146:386-395. 10.1016/j.applthermaleng.2018.09.133.
[4] Praveen S, Saravanan B, Siddharthan B, Kumaragurubaran S. Thermal management in conventional diesel engines. Materials Today: Proceedings 2021;45:1161-1165.
[5] Ghasemi Zavaragh H, Kaleli A, Solmuş İ, Afshari F. Experimental Analysis and Evaluation of Thermostat Effects on Engine Cooling System. Journal of Thermal Science 2020. 10.1007/s11630-020-1264-8.
[6] Haghighat AK, Roumi S, Madani N, Bahmanpour D, Olsen MG. An intelligent cooling system and control model for improved engine thermal management. Applied Thermal Engineering 2018;128:253-263. 10.1016/j.applthermaleng.2017.08.102.
[7] Kang H, Ahn H, Min K. Smart cooling system of the double loop coolant structure with engine thermal management modeling. Applied Thermal Engineering 2015;79:124-131. 10.1016/j.applthermaleng.2014.12.042.
[8] Castiglione T, Falbo L, Perrone D, Bova S. Cooling on-demand for knock prevention in spark-ignition engines: An experimental analysis. Applied Thermal Engineering 2021;195:117161.
[9] Ribeiro EG, de Andrade Filho AP, de Carvalho Meira JL, Electric water pump for engine cooling. 2007, SAE Technical Paper.
[10] Banjac T, Wurzenberger JC, Katrašnik T. Assessment of engine thermal management through advanced system engineering modeling. Advances in Engineering Software 2014;71:19-33. 10.1016/j.advengsoft.2014.01.016.
[11] Lindgärde O, Feng L, Tenstam A, Soderman M. Optimal Vehicle Control for Fuel Efficiency. SAE International Journal of Commercial Vehicles 2015;8(2):682-694. 10.4271/2015-01-2875.
[12] Bova S, Castiglione T, Piccione R, Pizzonia F. A dynamic nucleate-boiling model for CO2 reduction in internal combustion engines. Applied Energy 2015;143:271-282.
[13] Shin YH, Kim SC, Kim MS. Use of electromagnetic clutch water pumps in vehicle engine cooling systems to reduce fuel consumption. Energy 2013;57:624-631.
[14] Hasegawa N, Moriyoshi Y, Kuboyama T, Iwasaki M, Effect of Coolant Water and Intake Air Temperatures on Thermal Efficiency of Gasoline Engines. 2017, SAE Technical Paper.
[15] Naderi A, Qasemian A, Shojaeefard MH, Samiezadeh S, Younesi M, Sohani A, Hoseinzadeh S. A smart load-speed sensitive cooling map to have a high-performance thermal management system in an internal combustion engine. Energy 2021;229:120667.
[16] Aghbashlo M, Tabatabaei M, Mohammadi P, Pourvosoughi N, Nikbakht AM, Goli SAH. Improving exergetic and sustainability parameters of a DI diesel engine using polymer waste dissolved in biodiesel as a novel diesel additive. Energy Conversion and Management 2015;105:328-337. 10.1016/j.enconman.2015.07.075.
[17] Sarıkoç S, Örs İ, Ünalan S. An experimental study on energy-exergy analysis and sustainability index in a diesel engine with direct injection diesel-biodiesel-butanol fuel blends. Fuel 2020;268:117321. 10.1016/j.fuel.2020.117321.
[18] Özcan H. Energy and exergy analyses of Al2O3-diesel-biodiesel blends in a diesel engine. International Journal of Exergy 2019;28(1):29-45.
[19] Kaltakkıran G, Ceviz MA. The performance improvement of direct injection engines in cold start conditions integrating with phase change material: Energy and exergy analysis. Journal of Energy Storage 2021;42:102895. 10.1016/j.est.2021.102895.
[20] da Costa YJR, de Lima AGB, Bezerra Filho CR, de Araujo Lima L. Energetic and exergetic analyses of a dual-fuel diesel engine. Renewable and Sustainable Energy Reviews 2012;16(7):4651-4660.
[21] Gao J, Chen H, Tian G, Ma C, Zhu F. An analysis of energy flow in a turbocharged diesel engine of a heavy truck and potentials of improving fuel economy and reducing exhaust emissions. Energy Conversion and Management 2019;184:456-465.
[22] Romero CA, Torregrosa A, Olmeda P, Martin J, Energy balance during the warm-up of a diesel engine. 2014, SAE Technical Paper.
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The authors keep the copyrights of the published materials with them, but the authors are aggee to give an exclusive license to the publisher that transfers all publishing and commercial exploitation rights to the publisher. The puslisher then shares the content published in this journal under CC BY-NC-ND license.