发动机排放技术的应用分析论文.doc

xxxxx毕业设计 题 目 发动机排放技术的应用分析 学生姓名 xx 学号 xxxxxxxxxxx 所在学院 机械工程学院 专业班级 xxxxxxxxxxxxxxxxxxx班 指导教师 xxxxx ____ __ 完成地点 xxxxxxxxxxx ___ 2015年 06月 03日 发动机排放技术的应用分析 Xx （xxx机械工程学院xxxx3班，xx xx xxxx） 指导教师：xxx [摘要]随着汽车数量的迅速增加，发动机尾气污染己成为影响大气质量的主要原因之一，环境污染使人类始意识到减排的重要性，随着排放标准日益严格。尤其是强制性排放法规的加强使得生产企业提高发动机的设计技术来降低排放指标满足排放标准，而任何的减排措施不可能使排放指标有显著的改善，这就要求排放测量设备有效反应，发动机排放的变化趋势,使排放结果有效、准确。 本文依据世界主要几大排放法规体系介绍了车用发动机排放限值的变化趋势，分别介绍了国内外发动机排放法规的发展历程，综述了目前国内外发动机排放的现行标准法规和即将实施的标准法规和对发动机排放污染物的变化趋势的分析。简要阐述了发动机排放生成机理，排放结果的分析及各类排放测试设备的功能原理及存在的不足。阐述净化发动机排放的各种技术及各种工况下发动机排放物变化的分析。 [关键词]排放标准；排放技术；排放分析 Applied Analysis of Engine Emission Technology xxx （Grade11,Class3,Major Thermal energy and power engineering，Mechanical Engineering Dept.，xxx University of Technology，xxxxxx，xxxi） Tutor:xxxxxx Abstract:With the rapid increase in the number of cars, the engine exhaust pollution has become one of the main effects on air quality, environmental pollution so that mankind are starting to realize the importance of conservation, along with increasingly stringent emission standards. In particular to strengthen the mandatory emission regulations allows the company to increase the engines design techniques to reduce emissions targets to meet emission standards, but impossible for any emission reduction measures which have significant improvement, which requires an effective response emission measuring equipment, engines emission trends, the discharge results are valid and accurate. In this paper, based on the worlds emissions of several major regulatory system introduced vehicle engine emission limits trends, it introduced the development process of domestic and foreign engine emissions regulations, a review of the current standards and regulations in force at home and abroad and engine emissions standards and regulations to be imp