电控发动机实训仿真系统设计.docVIP

电控发动机实训仿真系统设计 摘 要：由于汽车发动机结构复杂，发动机实验台架价格昂贵，日常维护周期长、投入资金大，所以在汽车维修实践教学中存在不少弊端。因此，如何实现较小的资金投入提高实践教学的质量，让学生在有限的时间内更好掌握电控发动机的整体构造和故障排除的基本思路，成为当今汽车维修实践教学环节中的首要任务。 本设计通过理论分析和实验验证的方法, 运用电控发动机标准数据流、电控发动机故障诊断理论及Visual Basic 编程语言的知识, 分析了汽车电控发动机故障现象与故障原因之间的关联，设计出了一款具有考核功能的电控发动机实训仿真系统。该系统可以在计算机上仿真电控发动机在不同故障情况下的故障现象和数据流，汽车教学人力、物力和力。 关键词：实训仿真；电控发动机；故障诊断；Visual Basic Practical Training Simulation Design of Electronic Control Engine Abstract: There are many disadvantages during automobile maintenance practice teaching process due to the complicated structure of automobile engine, expensive engine test bench, long period of daily maintenance and large investment funds. Therefore, how to improve teaching quality with smaller capital investment and help the students grasp the overall structure of the electronic control engine and form the basic way of fault exclusion have become the primary task of automotive teaching. This paper combines the theoretical analysis and experimental validation, uses standard data flow of engine and fault diagnosis theory and the Visual Basic programming language knowledge, analyzes the relation ship between the phenomenon and the cause of automobile electronic control engine, designs a set of practical training simulation with the assessment system of electronic control engine fault diagnosis, This system can simulate different failure phenomena and the data flow in different fault situations thus to save human material and financial resources during teaching. Key words: Practical Training Simulation; Electronic Control Engine; Fault Diagnosis; Visual Basic  目 录 前 言 1 第1章 绪论 2 1.1 课题设计的目的、意义 2 1. 本课题研究的目的 2 2. 本课题研究的意义 2 1.2 课题的主要内容 2 1.2.1 三维实体建模 2 1.2.2 利用VB语言编程设计电控发动机实训仿真系统 2 1.3 课题设计的方法 3 1.3.1 系统整体方案的设计 3 1.3.2 系统软、硬件配置 3 1.3.3 窗体设计 3 1.3.4 程序设计 3 第2章 汽车发动机常见故障及诊断方法 5 2.1 奥迪A4轿车发动机资料 5 2.2 奥迪A4轿车发动机常见故障 5 2.3 奥迪A4轿车发动机常见故障原因 6 2.3.1 故障一：启动困难或无法启动 6 2.3.2 故障二：怠速不稳 6 2.3.3 故障三：加速无力 6 2.3.4 故障四：动力不足 6 2.3.5 故障五：排放异常 7 2.3.6 故障六：油耗过高 7 第3章 电控发动机实训