【作者】 李建锋；

【导师】 俞小莉；

【作者基本信息】 浙江大学 ， 动力机械及工程， 2004， 硕士

【摘要】 配气机构是内燃机中的一个重要部件，其性能的好坏，直接影响到整机的工作性能，因此配气机构动力学模型的研究是当前内燃机研究的主要方向之一。随着对发动机性能和排放要求的不断提高，使得配气机构的开发和研制以及使用新型配气机构变得更加迫切。对于目前存在的各种动力学模型，如何的比较认识这些模型的优劣，以及各种模型的使用范围，这些还需要进一步的研究发展。 本研究是在大量阅读国内外有关文献资料的基础上，结合与北方发动机研究所合作的配气机构测试系统课题的实际情况，采用模型分析，理论计算与试验测试相结合的研究模式，对配气机构动力学模型进行了比较研究，已经初步取得一些效果。 论文主要工作： 1．分析单质量模型和二质量模型，建立微分方程组，利用Visual C++软件进行编程计算。采用两种模型对175F柴油机配气机构的运动规律进行了动力学计算，并进行对比分析。 2．对发动机配气机构的动态测试系统进行了软硬件设计。其中，硬件设计包括动态信号分析仪的选择、传感器的选择、采集控制电路的设计等。软件设计包括了数据采集和数据分析两大部分。 3．用自行设计的测试系统对175F柴油机进行了动态测量，并对采集到的动态信号进行了数据后处理。更多还原

【Abstract】 As one important part of the engine, the performance of valve train decides the performance of engine. The study on the valve train dynamics model is one main question for study the engine. As the engine becoming more intensify and its speed increasing quickly, the development and application of new model valve train getting more and more urgently. When we towards various dynamics model at present, how to compare and comprehend the specialty and the serviceable range of these models, it needs farther development in the future.This dissertation investigates it on the basis of a host of reference, and combines the real situation of the subject, which is cooperation with the North Engine Research Institute. A comprehensive study pattern, the integration of analysis, test and manufacturing is applied to study on the valve train dynamics model with performance.Main works are as following:1. The one-mass dynamics model and two-mass dynamics model is studied. Differential equation is set up, write the program and calculate the model in Visual C++ language. The dynamic response of the valve train of 175F diesel engine has been calculated by this two model and compared the results between these two models.2. The valve train test system is designed. The hardware for valve train test system includes the selection of the dynamic signal analyzer and sensors, designing of data collection and control circuit, etc. The software designing includes data traffic and data processing.3. The valve train dynamic data of 175F diesel engine is measured by the valve train test system that is designed, and the data is management by post processor.更多还原