【摘要】：節(jié)能、高效一直以來(lái)都是柴油機(jī)發(fā)展的必然趨勢(shì)。隨著礦山生產(chǎn)需求日益加大,國(guó)家相關(guān)法規(guī)日益嚴(yán)格,柴油機(jī)作為礦用運(yùn)輸車輛的動(dòng)力設(shè)備也必須要在增加防爆裝置后擁有較好的性能。進(jìn)氣系統(tǒng)決定著柴油機(jī)的充氣效率和燃燒過(guò)程,直接影響柴油機(jī)的性能指標(biāo)。由于進(jìn)氣流動(dòng)的復(fù)雜性,計(jì)算機(jī)仿真技術(shù)在柴油機(jī)進(jìn)氣性能研究中具有不可替代的作用。本文以內(nèi)燃機(jī)計(jì)算機(jī)仿真技術(shù)為基礎(chǔ),本著一維分析整體,三維分析局部的內(nèi)燃機(jī)分析思想,以某型6缸柴油機(jī)為研究對(duì)象,旨在研究樣機(jī)的進(jìn)氣流動(dòng),并以原機(jī)結(jié)論提出基于樣機(jī)設(shè)計(jì)的防爆柴油機(jī)的進(jìn)氣性能的改進(jìn)措施。首先,構(gòu)建完整的樣機(jī)GT-POWER仿真模型,驗(yàn)證模型的正確性后研究整體能量損失以及壓縮比和噴油提前角對(duì)樣機(jī)性能的影響；其次,基于GT-POWER仿真模型研究樣機(jī)進(jìn)氣流動(dòng)性,變參數(shù)仿真分析進(jìn)氣系統(tǒng)結(jié)構(gòu)參數(shù)對(duì)樣機(jī)性能的影響,并根據(jù)樣機(jī)整體布局以及分析結(jié)果提出改進(jìn)措施；最后,建立某型6缸防爆柴油機(jī)GT-POWER模型,仿真對(duì)比證明防爆柴油機(jī)進(jìn)氣性能研究的必要性,以ANSYS-FLUENT對(duì)防爆進(jìn)氣系統(tǒng)內(nèi)部流場(chǎng)進(jìn)行有限元分析,結(jié)合原樣機(jī)進(jìn)氣結(jié)論提出防爆進(jìn)氣性能的改進(jìn)方案。
[Abstract]:Energy saving and high efficiency have always been the inevitable trend of diesel engine development. With the increasing demand for mine production and stricter national regulations, diesel engines, as power equipment of mine transport vehicles, must have better performance after increasing explosion-proof devices. The intake system determines the filling efficiency and combustion process of the diesel engine, and directly affects the performance of the diesel engine. Because of the complexity of intake flow, computer simulation plays an irreplaceable role in the study of intake performance of diesel engine. Based on the computer simulation technology of internal combustion engine, based on the idea of one-dimensional and three-dimensional analysis of internal combustion engine, this paper takes a 6-cylinder diesel engine as the research object to study the intake flow of the prototype. Based on the conclusion of the original engine, the improvement measures of the intake performance of the explosion-proof diesel engine based on the prototype design are put forward. Firstly, a complete prototype GT-POWER simulation model is constructed. After verifying the correctness of the model, the overall energy loss and the effects of compression ratio and injection advance angle on the performance of the prototype are studied. Secondly, the inlet flow of the prototype is studied based on the GT-POWER simulation model. The influence of the structural parameters of the intake system on the performance of the prototype is analyzed by variable parameter simulation, and the improvement measures are put forward according to the overall layout of the prototype and the analysis results. Finally, the GT-POWER model of a 6-cylinder explosion-proof diesel engine is established. The simulation results show that it is necessary to study the intake performance of the explosion-proof diesel engine. The internal flow field of the explosion-proof intake system is analyzed by finite element method (ANSYS-FLUENT). Combined with the air intake conclusion of the prototype, the improvement scheme of explosion proof air intake performance is put forward.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TK421

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 石紹彬;FSC賽車發(fā)動(dòng)機(jī)進(jìn)氣系統(tǒng)數(shù)值模擬研究[D];中北大學(xué);2017年

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本文編號(hào)：2437979