河南机电高等专科学校
毕业设计说明书(论文)
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行间距为单倍行距,段前0行段后6磅。汉字用宋体,英文及
阿拉伯数字一律用Times New Roman字体,小二号。居中。不用此信息时,删除此框。 系 部: 汽车工程系 专 业: 汽车制造与装配技术
行间距为单倍行距,段前段后0行。汉字用仿宋体,英文及阿拉伯数字一律用Times New 班 级: 汽制121 学生姓名: 张 三 学 号: 070116237 指导教师: 杜 潜 时间写成4月底。不用此信息时,删除此框。 Roman字体,三号。参照模版前后都应对齐。不用此信息时,删除此框。 2016 年 4 月 28 日河南机电高等专科学校毕业设计说明书(论文)
摘 要
I 摘 要 随着电控燃油喷射技术的发展和维修认识水平的不断提高,现代轿车中在对装有电控燃油喷射发动机的汽车进行维修时,使用故障诊断仪对发动机电控单元(ECU)进行检测,并根据ECU存储的故障代码进行检修,大多数能判明故障可能发生的原因和部位,会给维修人员的工作带来很大的方便。然而,在对汽车维修时,若仅仅靠故障代码寻找故障,往往会出现判断上的失误。实际上,故障代码仅仅是ECU认可的一个是或否的界定结论,不一定是汽车真正的故障部位,因此,在对汽车进行维修时应综合分析判断,结合汽车故障的现象来寻找故障部位。 本篇文章首先介绍了桑塔纳3000发动机电控系统的各个系统组成以及工作原理,接着介绍了桑塔纳3000发动机电控系统的故障现象和故障产生的机理,然后讲解了各个故障的诊断方法以及诊断过程。最后通过一个故障案例来具体的讲述故障诊断的流程。 关键词:电控发动机;故障诊断;桑塔纳
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河南机电高等专科学校设计说明书(论文)
Abstract
With the development of electronic control fuel injection technology and repair the understanding level of the continuous improvement, with the electronic control fuel injection engine automobile repair in the modern car, unit fault diagnosis instrument for engine electronic control (ECU) were detected, and maintenance according to the fault code ECU storage, most can cause and the site of marshaling failure may occur of, will bring great convenience to the repair work. However, in the automotive repair, if only by the fault code to find fault, often can appear mistake in judgment. In fact, the fault code is only a ECU accredited yes or no definition of conclusion, not necessarily the fault position, the car really so, in the repair of the car should be comprehensive analysis, combined with the automobile fault phenomenon to find the fault position. This article first introduces Santana 3000 engine control system composition and working principle of the system, and then introduces the mechanism of Santana 3000 engine control system fault and fault. Then explain the diagnosis method of each fault and diagnosis process. Finally, a fault case to fault diagnosis about the specific process.
Keywords: Electronic controlled engine; fault diagnosis; Santana 3000
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