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The design and optimization of the engine cooling system

Author: HuangZuo
Tutor: LiGuoXiangï¼›ZhuSongTao
School: Shandong University
Course: Power Engineering
Keywords: Cooling System Cooling fan Optimal design Radiator performance Matching calculation
CLC: TK402
Type: Master's thesis
Year: 2005
Downloads: 1486
Quote: 16
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Abstract


The cooling system is an important part of the engine , has a great influence on the power of the engine , economy and reliability . With the continuous improvement of the engine speed and power , the increasingly high demand for the cooling system , thus the design of the engine cooling system is also more and more in-depth . Premise to ensure sufficient cooling capacity and strength , high efficiency , low energy consumption to become the inevitable trend of future development of the cooling system . Carried out on the engine cooling system . Briefly optimize the design of the development , and change scale and punish function method , the cooling fan power consumption and fan hydraulic efficiency optimization objective mixed penalty function method , the use of the Fortran programming language , the structural parameters of the engine cooling fan optimization calculation , and optimization of the results were analyzed . Cooling fan volumetric efficiency at the same time the issues were discussed , amended to simplify the calculation method . Compared with the original design to optimize the design of the fan , the fan power consumption decreased from 3.451kW 3.093kW, down 10.37% ; fan total efficiency from 28.6% to 31.9% , achieved the expected goals . The radiator is a core member , the structure of the radiator of the cooling system is an important factor affecting its thermal capacity and has a great influence of the cooling effect of the good or bad of the entire cooling system . This paper analyzes theoretically a way to improve the performance of radiator heat pipe with heat sink structure on the thermal performance compared through experiments . The results show that reducing the radiator from the heat with a wave and dual wave band structure are conducive to improve the cooling capacity ; layout of the cooling capacity of the cooling water pipe has a great influence in other structural parameters of the same case , the number of cooling pipes the performance also significantly increased , but the drag ; cooling pipes row than row 3 , the amount of heat and not with the the heat total area increases significantly increased the general effect , but the drag is not significantly increase . The design of the cooling system and match a direct impact on the performance of the engine . The article also matches the cooling system on a modified vehicle radiator and cooling fan , design calculations and checking calculation , structural optimization and the cooling system .

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > General issues > Design, calculation
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