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.
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