基于米勒循环的柴油机NOX排放强度控制仿真  

Simulation of NO_X Emission Intensity Control of Diesel Engine Based on Miller Cycle

作　　者：王磊[1] 陈爱红[1] 黄英娜 WANG Lei;CHEN Ai-hong;HUANG Ying-na(Mechanical and Electrical Engineering College,Hebei Agricultural University,Baoding Hebei 071000,China;College of Information and Electronic Technique,Jiamusi University,Jiamusi Heilongjiang 154007,China)

机构地区：[1]河北农业大学机电工程学院,河北保定071000 [2]佳木斯大学信息电子技术学院,黑龙江佳木斯154007

出　　处：《计算机仿真》2020年第10期105-108,178,共5页Computer Simulation

基　　金：河北省高等学校科学技术研究青年基金项目(QN2018032)。

摘　　要：为了有效降低传统柴油机NOX排放强度控制方法的计算成本,提高控制精度与效率,提出基于米勒循环的柴油机NOX排放强度控制方法。对某中速大功率柴油机采用米勒循环进行工程模拟分析,同时对柴油机NOX排放进行预测。在排放预测结果的基础上观测柴油机结构,运用GT-Power软件组建对应的物理模型,运用该模型对柴油机真实机体的结构参数进行测量以及查阅,获取柴油机各个管道的相关参数,并在软件中选取合适的燃烧模型,通过物理模型完成柴油机NOX排放强度的控制。仿真结果表明,所提方法能够有效降低控制成本,并且控制精度与控制效率明显优于传统方法,说明所提方法具有较强的实用性。In order to reduce the computing cost of traditional method and improve the control accuracy and efficiency, this article presented a method to control NOx emission intensity of diesel engine based on Miller cycle. Firstly, Miller cycle was adopted for the engineering simulation analysis of a medium-speed and high-power diesel engine, and NOx emission of diesel engine was predicted at the same time. Based on the prediction results, the structure of diesel engine was analyzed, and then GT-power software was used to build the corresponding physical model. Moreover, the model was used to measure and consult the structural parameters of diesel engine, and thus to obtain the relevant parameters of each pipe in diesel engine. In addition, the appropriate combustion model was selected from the software. Finally, the NOx emission intensity of diesel engine was controlled by the physical model. Simulation results show that the proposed method can effectively reduce the control cost. Meanwhile, the control accuracy and control efficiency are significantly better than the traditional method. Consequently, the proposed method has strong practicability.

关 键 词：米勒循环 柴油机 排放 强度控制 燃烧模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]