缺氧低压环境下适合发动机高效工作的电控系统设计

缺氧低压环境下适合发动机高效工作的电控系统设计(任务书,开题报告,外文翻译,论文说明书11500字,CAD图纸7张)
摘要
在我国高原地带，由于氧气含量低、压强小等环境因素造成汽车整体性能难以达到理想的状态，例如发动机燃烧不充分造成汽车动力不足、有害气体排放增多等等，因此为了改善在缺氧低压环境下发动机的工作效率，本文打算给发动机设计出一个增氧装置，以及控制它的电控系统，使得发动机能够高效工作。发动机的增氧装置即是在发动机进气过程中，给发动机合适的额外氧气，经混合之后，使进入发动机的混合气体达到理想的空燃比14.3。在这个装置设计之中，得考虑到各种氧传感器、流量计、电磁阀和氧气罐等等的规格选择。
在基于MATLAB/SIMULINK平台，建立发动机进气通道、动力输出的子模型，对发动机进行燃烧仿真。为了验证该模型的准确性和实用性，同样选取了实物台架试验的数据，与模型仿真的结果进行对比。
发动机的电控系统是发动机中很重要的一个组成部分，其中ECU被称为“行车电脑”，是发动机电控系统最为核心的组成。CPU是电控单元的芯片，在此本次论文将选用TI （德州仪器）公司较为经典的芯片TMS320F28335，并建立足够的外围电路，来对该装置进行控制。控制的内容包括发动机节气门的开度、点火提前角、发动机喷油量等等。

[版权所有：http://DOC163.com]

关键词：缺氧低压 ，仿真，电控系统，控制

Abstract
In China's plateau, due to environmental factors such as low oxygen content and low pressure, it is difficult to achieve the ideal state of the overall performance of the car, such as insufficient engine combustion, insufficient vehicle power, increased harmful gas emissions, etc., so in order to improve the environment in anoxic low pressure For the efficiency of the lower engine, this paper intends to design an aeration device for the engine and an electronic control system to control it so that the engine can work efficiently. The engine's aerator is the appropriate extra oxygen for the engine during engine intake. After mixing, the mixture entering the engine reaches the desired air-fuel ratio of 14.3. In the design of this device, various specifications of oxygen sensors, flow meters, solenoid valves, oxygen tanks, and the like areconsidered.
Based on the MATLAB/SIMULINK platform, a sub-model of the engine intake passage and power output is established, and the engine is simulated for combustion. In order to verify the accuracy and practicability of the model, the data of the physical bench test was also selected and compared with the results of the model simulation. [资料来源：https://www.doc163.com]
The electronic control system of the engine is an important part of the engine. The ECU is called the “driving computer” and is the core component of the engine electronic control system. The CPU is the chip of the electronic control unit. In this paper, TI (Texas Instruments)'s more classic chip TMS320F28335 will be selected and enough peripheral circuits will be established to control the device. The contents of the control include the opening degree of the engine throttle, the ignition advance angle, the engine fuel injection amount, and the like.
Keywords: hypoxia and hypotension, simulation, electronic control system, control
 

[来源：http://Doc163.com]

目录
摘要    1
Abstract    2
1.绪论    5
1.1 研究背景目的    5
1.2国内外研究现状    5
1.3主要研究内容    6
1.4本文结构安排    6
2.柴油机空燃比的控制基本理论    7
2.1空燃比控制目的    7
2.2 影响空燃比因素    8
2.3空燃比控制研究现状    9
2.4本章小结    10
3.技术方案    10
4.柴油发动机的建模与仿真    11
4.1发动机仿真模型概述    11
4.2发动机模型的搭建    12
4.2.1 进气通道模型    12
4.2.2 动力输出模型    16 [资料来源：www.doc163.com]
4.3发动机仿真分析及验证    19
4.4本章小结    24
5.发动机电控系统的设计    25
5.1系统总体设计    25
5.1.1电控系统需求分析    25
5.1.2 CPU的选型    25
5.2硬件系统的设计    26
5.2.1电子芯片的最小系统设计    26
5.2.2 PWM功率驱动电路设计    28
5.3软件系统的设计    29
5.4本章小结    30
6.总结与展望    31
7.致谢    31
8.参考文献    32 [版权所有：http://DOC163.com]