艾国政 尤勇 李岩
摘要:汽车发动机的可靠性和故障率直接影响着行车体验,适时地进行发动机机械系统故障诊断分析可以有效地提升其可靠性、降低其故障率。以事实经验为基础进行的诊断分析方式,往往在定位故障问题的精确度,以及对故障的维修度上有所欠缺。基于此,本文进行汽车发动机机械系统故障的诊断分析。首先概述汽车发动机机械系统故障诊断分析的基本流程以及方法,其次根据发动机机械故障的损伤类型,并提出相应的故障诊断以及故障维修的策略。
Abstract: The reliability and failure rate of automobile engines directly affect the driving experience, and timely diagnosis and analysis of engine mechanical system failures can effectively improve its reliability and reduce its failure rate. Diagnosis and analysis methods based on facts and experience often lack the accuracy of locating faults and the degree of maintenance of faults. Based on this, this paper conducts the diagnosis and analysis of the automobile engine mechanical system failure. Firstly, it summarizes the basic process and methods of failure diagnosis and analysis of automobile engine mechanical system. Secondly, according to the damage type of engine mechanical failure, the corresponding failure diagnosis and failure maintenance strategies are proposed.
关键词:汽车发动机;机械系统;故障诊断
Key words: automobile engine;mechanical system;fault diagnosis
中图分类号:U471.23 文獻标识码:A 文章编号:1674-957X(2021)17-0154-02
0 引言
汽车故障诊断技术是指在不拆解整车的情况下,根据汽车运行过程中所出现的问题,对故障原因、故障部位进行定位、分析的汽车应用型技术。汽车发动机故障诊断的目的就是确定发动机的故障点,这是一项高度逻辑性、思维分析性的工作。而大多数的技术人员在执行任务时缺乏对故障原因的分析,或者缺乏工作原理上的逻辑上证明,这很有可能导致故障排除步骤繁琐、排查结果出现较大差错,进而难以对故障问题开展维修工作,对汽车驾驶员的安全带来一定程度上的威胁,因此,汽车发动机机械系统故障诊断分析与维修工作联系十分紧密,也都十分地重要。
1 汽车发动机机械系统故障诊断的基本流程
维修人员在发动机机械系统故障诊断中,具体需要经历以下几个过程:……p>