电控高压共轨柴油机控制原理与故障诊断毕业论文设计.doc

(此文档为word格式，下载后您可任意编辑修改！) 淮安信息职业技术学院 毕业论文 题 目 电控高压共轨柴油机控制原理与故障诊断 摘 要 为了满足日趋严格的排放法规和进一步提高柴油机的经济性和动力性的要求，电控高压共轨技术在这种背景下孕育而生。电控高压共轨柴油机作为节能环保发动机在节能与环保意识日益增强的今天已成为车用发动机的一种必然选型。其喷油控制与故障监控策略的研究对提高燃油喷射控制精度、实现节能减排目标、提高发动机运行稳定性与可靠性以及优化发动机整体性能具有重要的现实意义。Abstract To meet the increasingly stringent diesel emission regulations and to further improve the economy and power of the requirements, electronically controlled high pressure common rail technology in this context bred. Electronically controlled high pressure common rail diesel engine as an energy-saving environmental protection, energy saving and environmental protection in the growing awareness of today, has become an inevitable vehicle engine selection. Its injection control and fault monitoring policy research, to improve the fuel injection control precision, to achieve energy reduction targets, improve stability and reliability of the engine is running and optimizing the overall performance of the engine has important practical significance. This paper describes the foreign countries, electronically controlled high pressure common rail diesel engine within the development of a detailed analysis of the composition and work of high pressure common rail principle focuses on electronically controlled high pressure common rail system fault diagnosis and repair its concrete steps, the last cited Havel , Xichai other cars often failures were analyzed to understand. Keywords: High pressure common rail; electronically controlled diesel engine; control principle; fault diagnosis 目 录 摘 要 I Abstract II 第一章 绪论 1 1.1电控柴油机发展 1 1.2电控高压共轨柴油机的发展 3 1.2.1国外高压共轨柴油机的发展 4 1.2.2国内高压共轨柴油机的发展 5 1.3电控高压共轨技术发展 6 1.4电控高压共轨的特点及优缺点 6 第二章 电控高压共轨柴油机的结构原理 9 2.1电控高压共轨的组成 9 2.1.1燃油系统 9 2.1.2电控系统 10 2.2电控高压共轨系统的工作原理 11 2.3电控高压共轨柴油机的燃油电器元件 12 2.3.1燃油粗滤器和精滤器 12 2.3.2低压输油泵 12 2.3.3高压油泵 12 2.3.4共轨组件 13 2.3.5电控喷油器 14 2.4电控高压共轨柴油机的主要电气元件 15 2.4.1主要传感器 16 2.4.2 ECU 19 2.4.3主要执行器 19 第三章 电控高压共轨柴油机使用维护 22 3.1基本操作要注意的问题 22 3.2电控高压共轨的日常维护 22 3.3节油措施 25 第四章