本文選題：汽車 + 熱管理��； 參考：《吉林大學(xué)》2016年碩士論文

【摘要】：隨著人們對(duì)汽車動(dòng)力性和舒適性要求的不斷提升,整車集成熱管理越來越受到關(guān)注。汽車熱管理從系統(tǒng)集成的角度,實(shí)現(xiàn)綜合性能的優(yōu)配,保證最佳整車動(dòng)力性、經(jīng)濟(jì)性和舒適性等。先進(jìn)的熱管理是協(xié)同發(fā)動(dòng)機(jī)動(dòng)力熱管理和空調(diào)暖通過程,通過匯集于動(dòng)力艙多熱力系統(tǒng)熱交互復(fù)雜傳熱的有效集成,達(dá)到各熱力系統(tǒng)的最佳性能。因此,整車集成熱管理計(jì)算分析方法已經(jīng)成為重要的設(shè)計(jì)分析手段。本文通過對(duì)汽車各熱力系統(tǒng)及其主要部件進(jìn)行建模與分析,建立了一套動(dòng)力熱管理和空調(diào)暖通系統(tǒng)在內(nèi)的基于動(dòng)力艙結(jié)構(gòu)化的整車集成熱管理系統(tǒng)分析方法,實(shí)現(xiàn)一維多系統(tǒng)關(guān)聯(lián)和三維結(jié)構(gòu)化耦合計(jì)算方法,其中包括熱流動(dòng)分析,模型、模塊建立,以及軟件化算法等。該方法體系不但適合傳統(tǒng)熱力發(fā)動(dòng)機(jī)系統(tǒng),而且也為電動(dòng)汽車動(dòng)力系統(tǒng)熱管理奠定了方法基礎(chǔ)。本文以熱力發(fā)動(dòng)機(jī)動(dòng)力熱管理為例,最主要含蓋發(fā)動(dòng)機(jī)冷卻系統(tǒng)和增壓中冷系統(tǒng)兩部分。其中,重點(diǎn)針對(duì)散熱器、中冷器、節(jié)溫器、壓氣機(jī)等主要部件,進(jìn)行流動(dòng)、傳熱和熱力過程分析,建立數(shù)學(xué)模型的基本表征方式。特別在常規(guī)和廣義兩種結(jié)構(gòu)形式的散熱器與中冷器處理方面,分別提出了不同的傳熱描述方式,建立了相應(yīng)的傳熱控制方程和仿真計(jì)算模塊。建立了一維與三維耦合算法,一維計(jì)算程序?qū)崿F(xiàn)了散熱器、中冷器、節(jié)溫器、壓氣機(jī)等主要部件模塊關(guān)聯(lián),三維仿真對(duì)動(dòng)力艙的結(jié)構(gòu)特點(diǎn)進(jìn)行分析。通過程序化實(shí)現(xiàn)一維和三維耦合仿真計(jì)算上位控制。該發(fā)動(dòng)機(jī)冷卻熱管理系統(tǒng)分析方法,主要解決發(fā)動(dòng)機(jī)冷卻系統(tǒng)和增壓中冷系統(tǒng)中各組成環(huán)節(jié)間的散熱性能匹配、換熱器及風(fēng)扇間的匹配、動(dòng)力艙結(jié)構(gòu)布置匹配等問題,以及對(duì)冷卻系統(tǒng)和增壓中冷系統(tǒng)散熱性能預(yù)測分析問題。在汽車空調(diào)中,重點(diǎn)構(gòu)建制冷系統(tǒng)分析方法,包括壓縮機(jī)、冷凝器、節(jié)流裝置、蒸發(fā)器等主要部件,建立了相應(yīng)的數(shù)學(xué)模型及傳熱控制方程,完成一維關(guān)聯(lián)算法和編程軟件化。其中,重點(diǎn)分析了冷凝器和蒸發(fā)器的結(jié)構(gòu)特征和傳熱性能,并通過一維程序?qū)⑵渑c壓縮機(jī)、節(jié)流裝置等主要部件耦合,建立了一維系統(tǒng)仿真模塊。同時(shí),基于動(dòng)力艙建立了冷凝器與動(dòng)力艙內(nèi)其他熱力系統(tǒng)的三維結(jié)構(gòu)化關(guān)系,并通過一維程序?qū)崿F(xiàn)了其一維與三維耦合仿真計(jì)算的上位控制。該汽車空調(diào)制冷系統(tǒng)分析方法,客觀考慮了空調(diào)制冷熱負(fù)荷的實(shí)時(shí)影響,主要解決了冷凝器與動(dòng)力艙內(nèi)部其他熱力系統(tǒng)的熱交互影響匹配分析。研究工作在所建立的發(fā)動(dòng)機(jī)與空調(diào)集成熱管理分析方法基礎(chǔ)上,進(jìn)行了算例分析。研究諸如發(fā)動(dòng)機(jī)工況、空調(diào)制冷工況、車輛行駛速度等因素對(duì)發(fā)動(dòng)機(jī)冷卻效果和空調(diào)制冷能力的影響特性、作用特性、熱工特性等,以便進(jìn)一步指導(dǎo)該分析方法的應(yīng)用。
[Abstract]:With the increasing demand for vehicle power and comfort, vehicle integrated heat management has attracted more and more attention. From the angle of system integration, automobile thermal management can achieve the optimal performance of the vehicle, and ensure the optimal power, economy and comfort of the whole vehicle. Advanced heat management is a cooperative engine thermal management and air conditioning heating process. Through the effective integration of heat interaction and complex heat transfer in the multi-thermal system in the power module, the best performance of each thermal system is achieved. Therefore, the integrated heat management calculation and analysis method has become an important means of design and analysis. Based on the modeling and analysis of the thermal systems and their main components of the automobile, a set of integrated heat management system analysis method based on the structure of the power cabin is established in this paper, which includes the power heat management system and the HVAC system. The method includes thermal flow analysis, model, module building, software algorithm and so on. The method system is not only suitable for the traditional thermal engine system, but also lays a foundation for the thermal management of the electric vehicle power system. In this paper, the thermal power management of a thermal engine is taken as an example, the main two parts are the cooling system and the supercharged intercooling system. Among them, the flow, heat transfer and thermodynamic process are analyzed for the main components of radiator, intercooler, thermostat, compressor and so on, and the basic representation of mathematical model is established. In particular, in the treatment of radiators and intercooler of general and generalized structure, different heat transfer description methods are put forward, and corresponding heat transfer control equations and simulation calculation modules are established. One dimensional and three dimensional coupling algorithms are established. The main components such as radiator, intercooler, thermostat, compressor and so on are connected by one-dimensional program. The structural characteristics of power cabin are analyzed by three-dimensional simulation. The upper control of one-dimensional and three-dimensional coupling simulation is realized by programming. The analysis method of engine cooling heat management system mainly solves the problems of heat dissipation performance matching between engine cooling system and turbocharged intercooling system, the matching of heat exchanger and fan, the matching of power cabin structure arrangement, etc. The heat dissipation performance of cooling system and supercharged intercooling system is predicted and analyzed. In automobile air conditioning, the analysis method of refrigeration system, including compressor, condenser, throttle device, evaporator and so on, is constructed. The corresponding mathematical model and heat transfer control equation are established, and the one-dimensional correlation algorithm and programming software are completed. The structural characteristics and heat transfer performance of condenser and evaporator are analyzed, and the one-dimensional system simulation module is established by coupling the condenser and evaporator with compressor, throttling device and other main components. At the same time, based on the power cabin, the three-dimensional structured relationship between the condenser and other thermal systems in the power cabin is established, and the upper control of its one-dimensional and three-dimensional coupling simulation calculation is realized by one-dimensional program. The analysis method of automobile air conditioning refrigeration system objectively considers the real time effect of air conditioning cooling heat load, and mainly solves the matching analysis of the heat interaction between condenser and other thermal systems inside the power cabin. Based on the integrated heat management analysis method of engine and air conditioning, a numerical example is presented. In order to guide the application of the analysis method, the effects of engine working conditions, air conditioning refrigeration conditions and vehicle speed on the engine cooling effect and the cooling capacity of the air conditioning system are studied in order to further guide the application of the analytical method.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：U464;U463.851

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