汽车的排放控制系统的结构原理与检修.doc

摘要 随着时代的进步，人们的生活越来越好，汽车便成为了人们的主要代步工具。随着人们对汽车需求的增加，汽车越来越多几乎达到了一个饱和的状态。为使这个问题能够很好的得到解决，汽车发动机的排放必须降低或者是控制。 随着汽车工业的发展迅速，我国的汽车保有量急剧增加，汽车废气对空气的污染已成为严重的社会公害。在汽车密集的城市，汽车排放污染,不仅是一个环境保护问题,而且本身也造成能源浪费。汽车排气中的CO、HC对大气产生很大的污染。汽车排放污染对人们的生活环境造成了极大的影响，严重地威胁到人们的身体健康，同时也危害着一些动、植物的生存和生长，破坏了自然界的生态平衡。因此，解决汽车的排气污染成为亟待认真研究的重要课题。为了保护我们的生存环境，关爱生命健康，必须严格限制汽车尾气排放。严格汽车排放 关爱生命健康。 本论文论述主要包括汽油车和柴油车排放污染物的成分及生成机理，其包括电控喷射技术、共轨式燃油喷射系统、涡轮增压及中冷技术、排气再循环系统(EGR)、汽车尾气净化装置。 关键词：涡轮增压及中冷技术；尾气排放；净化技术； Abstract With the progress of the times, peoples life is getting better and better, the car will become the main means of transport for people. With the increasing demand for vehicles, more and more cars almost reached a saturated state. To make this problem can be well solved, automobile engine emissions must be reduced or control. With the development of automobile industry rapidly, Chinas rapid increase of automobiles, the air pollution caused by automobile exhaust has become a serious social problem. In the auto dense city, the automobile emission pollution, is not only a problem of environmental protection, but also result in a waste of energy. In automobile exhaust gas CO, HC have a great pollution to the atmosphere. Automobile exhaust pollution caused great impact on peoples living environment, a serious threat to the health of people, also do harm to animal, plant survival and growth, destroyed the ecological balance of nature. Therefore, become an important issue to be studied conscientiously solve vehicle exhaust emission. In order to protect our living environment, life and health care, we must strictly limit the automobile exhaust emissions. Strict vehicle emission life and health care. This thesis mainly includes the composition and formation mechanism of pollutant emissions from gasoline and diesel vehicles, including electronic fuel injection, common rail fuel injection system, turbocharging and intercooling technology, exhaust gas recirculation system (EGR), automobile exhaust purification device