发动机电喷内核模型的研究及实践

电气自动化论文编号:ZD233 论文字数:22075,页数:43

目  录

摘 要 I
Abstract II
第一章 绪 论 1
1.1  汽油喷射系统的发展及应用 1
1.2 电控发动机的发展 2
1.3 本课题内容和目标 3
第二章 化油器基本模型的建立 4
2.1 电喷发动机和化油器发动机简介 4
2.2化油器参数和基本数据 4
2.3  化油器电控系统的研究 16
2.4确定发动机基本数据模型 19
第三章 建立电子燃油喷射系统 20
3.1电喷系统的结构与工作原理 20
3.1.1工作原理 20
3.1.2 结构原理 21
3.2 燃烧过程分析 24
3.3 点火控制系统 26
3.3.1点火系统综述 26
3.3.2 发动机点火过程 29
3.3.3 点火提前角的调整 30
3.3.4点火提前对CO排放的影响 32
3.3.5点火提前对COx排放的影响 32
3.3.6点火提前三维控制 33
3.4  电喷系统工作过程模拟计算 34
3.5  精确模型的闭环采集和处理 38
3.5.1 模拟量的采集处理 38
3.5.2 转速信号的采集处理 38
3.5.3 负荷信号的采集处理 39
3.5.4 喷油信号的采集处理 39
3.5.5 点火信号采集处理 40
3.5.6 其他信号的采集处理 40
结 论 42
参考文献 43
致 谢 44

摘 要
 我们设计的检测系统可自动给定发动机各种负荷，控制发动机各种转速(从慢速到全速)，经各种传感器采集数据，给出运算模型，在通过计算机进行初步运算，来控制执行机构。然后经过闭环系统再次采集修正数据进行准确运算后，对执行机构进行控制。这样一个闭环控制回路可提供标准、准确的数据给EFI中MCU 开发使用。以上的数据包括一定负荷下的发动机转速、喷油量空燃比和点火提前角等三维数据。此数据为高效、高性能汽车提供研究设备，并使其尾气排放标准满足美国及欧洲现代汽车发动机排放标准的要求。设计的关键问题是建立一个计算机控制系统、一个基本运算模型以及精确运算方法是本课题开发的关键问题。包括各种传感器、数据采集卡、计算机输出给发动机各执行机构的控制卡和驱动板、整体应用程序以及运算运算调试数据的调用。

关键词：闭环控制 ;运算模型 ;传感器

 
 
Launch the machine electricity sprays inside the research and the fulfillment of the pit model

Abstract
 The examination system that we design can give launch certainly various burden of machine automatically, the control launches the machine various turn soon( from slowly and soon arrive full speed), through various spread the feeling machine to collect the data, operate model for , at carried on the first step operation through a calculator, control to carry out the organization.Then after process shut the wreath system to collect to revise the data to carry on the accurate operation again, to the performance the organization carries on the control.Thus a shut the wreath control back track and can provide the standard, accurate data to EFI MCU Development usage.The above data include under certain burden of launch the machine to turn soon, spray the amount of oil the empty  compares and lights the fire advance Cape etc. three datas of  .This data for efficiently, the high performance automobile provides to study the equipments, and make its tail  spirit exhaustion standard satisfy the request that the United States and European modern automobiles launch the machine exhaustion standard.The key problem of design is a key problem that build up a calculator control system, a basic operation model and the precision operation methods' are this topic developments.Include various spread the feeling machine, data to collect the card, calculator to output to launch each performance of machine organization of control card and drive the plank, whole and applied procedure and operate to adjust to try the data to adjust to use.

 Key words:    Shut the wreath control; Operate the model; Spread the feeling machine。