浅谈氧传感器故障检测..doc

中华人民共和国教育部 东北林业大学 毕 业 设 计 论文题目： 浅谈氧传感器故障检测 学 生： 指导教师： 学 院： 专业年级： 2016年3月 浅谈氧传感器故障检测 摘 要 随着汽车技术的发展，世界各国对汽车尾气排放标准要求越来越严格，电喷汽车越来越受市场的追捧。氧传感器是现代汽车控制废气排放、提高燃油经济性的重要传感器之一，发动机的氧传感器是发动机用于调节空燃比信号，氧传感器故障会造成燃油消耗增大，发动机工作异常，不但造成经济损失还会造成大气污染。而氧传感器一旦出现故障，将使电子燃油喷射系统的电脑不能得到排气管中氧浓度的信息，因而不能对空燃比进行反馈控制，会使发动机油耗和排放污染增加，发动机怠速不稳、缺火、喘振等故障现象。因此，必须及时的进行故障检测和排除故障或更换。 关键词：汽车排放控制 氧传感器 故障检测 Abstract With the development of the world automobile industry, automotive use of technology continues to mature, people keep the cars performance requirements increase, particularly in the most prominent fuel, most people like to use energy saving models, car production for this trend Manufacturers must make great efforts in the fuel supply and fuel supply systems in the automotive energy-saving and environmental protection play an important role. However, the process will in the exercise of due to various external factors, so that the fuel supply system in the series of failures. The fuel supply system to exercise a direct impact on the stability of car environmental protection and energy saving, this paper on vehicle fuel supply system component description, failure analysis and troubleshooting. Combined with examples of fuel supply system frequently fails to diagnose excluded. Key words: fuel supply system; component maintenance; fault diagnosis to exclude 目 录 摘要 Abstract 1 概述…………………………………………………………………………………………1 2汽车氧传感器的结构特点………………………………………………1 2.1氧传感器的组成…………………………………