矿用防爆柴油机进气性能的仿真与研究
发布时间：2019-03-10 20:16
【摘要】：节能、高效一直以来都是柴油机发展的必然趋势。随着矿山生产需求日益加大,国家相关法规日益严格,柴油机作为矿用运输车辆的动力设备也必须要在增加防爆装置后拥有较好的性能。进气系统决定着柴油机的充气效率和燃烧过程,直接影响柴油机的性能指标。由于进气流动的复杂性,计算机仿真技术在柴油机进气性能研究中具有不可替代的作用。本文以内燃机计算机仿真技术为基础,本着一维分析整体,三维分析局部的内燃机分析思想,以某型6缸柴油机为研究对象,旨在研究样机的进气流动,并以原机结论提出基于样机设计的防爆柴油机的进气性能的改进措施。首先,构建完整的样机GT-POWER仿真模型,验证模型的正确性后研究整体能量损失以及压缩比和喷油提前角对样机性能的影响；其次,基于GT-POWER仿真模型研究样机进气流动性,变参数仿真分析进气系统结构参数对样机性能的影响,并根据样机整体布局以及分析结果提出改进措施；最后,建立某型6缸防爆柴油机GT-POWER模型,仿真对比证明防爆柴油机进气性能研究的必要性,以ANSYS-FLUENT对防爆进气系统内部流场进行有限元分析,结合原样机进气结论提出防爆进气性能的改进方案。
[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.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TK421
本文编号：2437979
[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.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TK421
【引证文献】
相关硕士学位论文 前1条
1 石绍彬;FSC赛车发动机进气系统数值模拟研究[D];中北大学;2017年
，本文编号：2437979
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