Kang, Hyungmook Ahn, Hyunchul Min, Kyoungdoug 2024-01-20T07:31:54Z 2024-01-20T07:31:54Z 2021-09-05 2015-03-25 1359-4311 https://pubs.kist.re.kr/handle/201004/125645 A thermal management analysis for the two double loop coolant circuit cases, which used separated cooling structures for the head and block, was performed in the current study. With the conventional configuration, the problem of over cooling problem in the specific components arose, because the cooling system was constrained by the thermal limitations of specific components requiring-high cooling loads. An integrated engine thermal management model was developed to observe features of the proposed structure, which was validated with experimental data, and a semi-iteration process was conducted using a 1D high-frequency engine model. To maximize the advantages of the proposed structure, two electric devices were applied to the ETM model to facilitate "smart cooling." The current analysis indicated that the 30% flow rate of the basic system satisfied the thermal limitations of the target engine under half load conditions; hence, the thermal efficiency increased because of the decreased auxiliary power, friction and heat transfer loss. In addition, it was noted that the thermal deviation in an engine and warm-up time diminished because of the structural changes and optimal coolant control. (C) 2014 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD ENERGY MANAGEMENT VEHICLES Smart cooling system of the double loop coolant structure with engine thermal management modeling Article 10.1016/j.applthermaleng.2014.12.042 1 APPLIED THERMAL ENGINEERING, v.79, pp.124 - 131 APPLIED THERMAL ENGINEERING 79 124 131 scie scopus 000351648000014 2-s2.0-84922701146 Thermodynamics Energy & Fuels Engineering, Mechanical Mechanics Thermodynamics Energy & Fuels Engineering Mechanics Article ENERGY MANAGEMENT VEHICLES Engine thermal management Double loop coolant structure Engine modeling Energy flow Thermal gradient