摘要
汽车发动机实验课程是提高学生专业实践能力的重要环节,但在传统实验教学台架搭建过程中存在“耗时、耗能、耗力”的问题,并且受实验场地和成本的限制,学生开展实验的自由度和参与度较低,针对以上问题搭建了汽车发动机虚拟仿真实验教学平台。平台以CA4DD柴油机为建模对象,在对其结构分析的基础上利用CRUISE-M软件完成了发动机进排气子系统、EGR子系统等以及整机的模型搭建、参数输入与模型校核,以柴油机燃烧参数调整特性虚拟仿真实验为例,设计实验流程,展示了平台的实际应用。学生可以根据搭建的CA4DD一维性能仿真模型在课堂教学演示和自学之后,利用CRUISE-M的在线和离线仿真方法,实现传统实验教学平台的升级,扩充现有的实验项目。平台丰富了实验内容,弥补了当前发动机专业实践教学的缺陷,拓宽了学生的知识领域,提升了学生的学习兴趣和实践能力。
Automobile engine experiment course is an important part to improve students′professional practical ability.However,the process of the traditional experimental teaching platform construction is time-consuming,energy-consuming and effort-consuming.In addition,with the limitation of experimental site and cost,students have low degree of freedom and participation in experiments.Therefore,a virtual simulation experimental teaching platform for automobile engine is set up.On the platform,the CA4DD diesel engine is taken as the modeling object.On the basis of the structural analysis of the CA4DD diesel engine,the CRUISE-M is used to complete the model building,including engine intake&exhaust subsystem,EGR subsystem and the model building,parameter input and model checking of the whole engine.The virtual simulation experiment of diesel engine combustion parameter adjustment characteristics is taken as an example.The experiment procedures are designed to show the practical application of the platform.According to the built one-dimensional performance simulation model of CA4DD,students can realize the upgrade of the traditional experimental teaching platform and expand the existing experimental projects by CRUISE-M online and offline simulation methods after classroom teaching demonstration and self-study.The platform can enrich the experiment content,make up for the defects of the current practical teaching of engine major,broaden the knowledge field of students and improve their learning interests and practical abilities.
作者
范鲁艳
曲大为
苏岩
杨硕
FAN Luyan;QU Dawei;SU Yan;YANG Shuo(College of Automotive Engineering,Jilin University,Changchun 130025,China)
出处
《现代电子技术》
2022年第17期163-168,共6页
Modern Electronics Technique
基金
国家自然科学基金面上项目(51876079)
吉林大学教学改革项目(2019XYB156)。
