An intelligent cooling system and control model for improved engine thermal management

Haghighat, Arya; Roumi, Soheil; Madani, Navid; Bahmanpour, Davoud; Olsen, Michael G.

doi:10.1016/j.applthermaleng.2017.08.102

Cited by 71 publications

(25 citation statements)

References 20 publications

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“…Table 8 shows the results where the proposed approach has the highest ability among all methods to improve warm‐up time except for reference [55]. In addition, the approach of this paper has the second rank from fuel consumption reduction and emission reduction after references 52,57 . Although one side is excellent in methods of investigations, 52,55,57 two other aspects are not very good.…”

Section: Resultsmentioning

confidence: 92%

“…Moreover, the warm‐up period could be decreased by 28.5% and the amount of CO and CO 2 emissions were reduced by 22.6% and 34.9% at the fully warm‐up phase, respectively, after applying a smart cooling control system 56 . In addition, fuel consumption was decreased by 1.1% 57 …”

Section: Introductionmentioning

confidence: 99%

“…Keblusek, 51 Cai et al, 52 Chastain, 53 Shin et al, 54 Kang et al, 55 Mohamed, 56 and Haghighat 57 have worked on developing intelligent cooling systems of different types of engines. In those studies, innovative cooling strategies such as electromagnetic clutch water pumps, variable speed electric coolant pump, and double loop coolant structure are used to modify the engine cooling system.…”

Section: Introductionmentioning

confidence: 99%

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Energy and environmental enhancement of power generation units by means of zero‐flow coolant strategy

et al. 2021

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Summary Warm‐up period is considered as the most critical phase in the operation of any device that converts the energy of a fuel into heat, electricity, and other products, including power generation units since the system efficiency and environmental pollution levels are much worse than the normal operation in that phase. Considering this point, in this study, applying the zero‐flow coolant strategy to reduce the warm‐up period is suggested for power generation units and it is investigated in details. An internal combustion engine is selected as the case‐study and implementation of the method to enhance the performance of that from both energy and environmental aspects are studied comprehensively. As the results show, for the investigated engine, which has a capacity of 1.8 L, implementation of the method leads to 17% decrease in the warm‐up period. It is accompanied by 9.32% and 2.23% improvement in the amount of unburned hydrocarbon emission and fuel consumption. Moreover, based on the conducted discussion, despite other available methods to enhance systems that consume fuel, the method is so practical that it could be employed simply in an energy system without imposing a huge cost, which is taken into account as a significant advantage.

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy and environmental enhancement of power generation units by means of zero‐flow coolant strategy

et al. 2021

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“…By combining Equation 15with Equations (19)- (21), the rate of heat input in air cycle simulation can be calculated.…”

Section: Air Cycle Simulationmentioning

confidence: 99%

“…Many technologies have been developed for improving the efficiency of engines, such as engine downsizing [2][3][4], the Atkinson or Miller cycle [4][5][6], gasoline direct injection (GDI) [7][8][9], the homogeneous charge compression ignition (HCCI) [10][11][12][13][14], reduction of exhaust energy loss [15,16] or heat loss [17][18][19][20], electrical or precisely controlled cooling systems [20][21][22], and combustion phase control [23]. Cesare et al [1] reported that engine downsizing concepts, such as turbocharging combined with GDI, have contributed to the recent improvements of ICEs.…”

Section: Introductionmentioning

confidence: 99%

Improving the Thermal Efficiency of the Homogeneous Charge Compression Ignition Engine by Using Various Combustion Patterns

Wang

Mir

2018

Energies

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The efficiency of an internal combustion engine (ICE) is essential for automobiles and motorcycles. Several studies have demonstrated that the homogeneous charge compression ignition (HCCI) is a promising technology for realizing engines with high efficiency and low emissions. This study investigated the combustion characteristics of the HCCI using a 125 cc motorcycle engine with n-heptane fuel. The engine performance, combustion characteristics, and thermal efficiency were analyzed from experimental data. The results revealed that a leaner air–fuel mixture led to higher engine efficiency and output. The improvement of engine output is contradictory to the general trend. Energy balance analysis revealed that lower heat loss, due to the low cylinder gas temperature of lean combustion, contributed to higher efficiency. A double-Wiebe function provided excellent simulation of the mass fraction burned (MFB) of the HCCI. Air cycle simulation with the MFB, provided by the double-Wiebe function, was executed to investigate this phenomenon. The results indicated that a better combustion pattern led to higher thermal efficiency, and thus the engine output and thermal efficiency do not require a fast combustion rate in an HCCI engine. A better combustion pattern can be achieved by adjusting air–fuel ratio (AFR) and the rates of dual fuel and exhaust gas recirculation (EGR).

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Multiobjective optimization of the cooling system of a marine diesel engine

Zhang

Zeng

2021

Energy Science & Engineering

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An intelligent cooling system and control model for improved engine thermal management

Cited by 71 publications

References 20 publications

Energy and environmental enhancement of power generation units by means of zero‐flow coolant strategy

Energy and environmental enhancement of power generation units by means of zero‐flow coolant strategy

Improving the Thermal Efficiency of the Homogeneous Charge Compression Ignition Engine by Using Various Combustion Patterns

Multiobjective optimization of the cooling system of a marine diesel engine

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