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首页> 外文会议>Asia-Pacific Power and Energy Engineering Conference;APPEEC 2009 >Cylinder Process Simulation with Heat Release Analysis in Diesel Engine
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Cylinder Process Simulation with Heat Release Analysis in Diesel Engine

机译：柴油机散热过程的汽缸过程仿真

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The use of thermodynamic models for the simulation of the cylinder process from analyzing heat release has been a common practice as a way to predict the performance of internal combustion engines. However, it is of importance to apply a suitable heat release model, as well as the gas properties, fuel properties, heat loss models, etc. In this paper, in order to distinguish two stages of combustion process, a double Vibe model is used to determine the heat release rate and a systematic investigation of the influence of several parameters in it to the pressure and temperature in cylinder is carried out. In addition, the Woschni heat transfer coefficient model is used to determine the heat loss to the cylinder wall during combustion. The gas properties, such as gas constant, specific heat and lower heat value are acquired by determining the components of air, stoichiometric gas and fuel, and using the mass fraction of air in the working gas as parameter. The reliability of the model has been verified by using a 4-stroke diesel engine MAN 4L20/27 to simulate in MATLAB/SIMULINK and the result of the simulation model is coincident with the actual operating condition of this engine.
机译：作为分析内燃机性能的一种方法，将热力学模型用于通过分析热量释放来模拟气缸过程已经成为一种普遍的做法。但是，应用合适的放热模型以及气体特性，燃料特性，热损失模型等非常重要。在本文中，为了区分燃烧过程的两个阶段，使用了双重Vibe模型确定热量的释放率，并对其中的几个参数对气缸内压力和温度的影响进行了系统的研究。另外，沃施尼传热系数模型用于确定燃烧过程中汽缸壁的热损失。通过确定空气，化学计量气体和燃料的成分并使用工作气体中空气的质量分数作为参数，可以获得诸如气体常数，比热和较低热值的气体特性。该模型的可靠性已通过使用4冲程柴油发动机MAN 4L20 / 27在MATLAB / SIMULINK中进行仿真进行了验证，仿真模型的结果与该发动机的实际运行状况相吻合。

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