汽车发动机性能检测分析.doc

论文题目：汽车发动机性能检测分析 摘 要 汽车在使用过程中，其技术状况将随着行驶里程的延长而逐步变差，致使动力性下降，经济性变差，可靠性降低，安全性不良和公害严重。为减缓汽车在使用过程中性能的下降速度，延长其使用寿命，除了改善使用条件、使用方法外，还应重视汽车技术状况变化的研究，症状变化规律，对汽车进行及时诊断和检测，从而有针对性地进行维护和修理。对汽车实行定期和不定期综合性能检测的目的是在不解体的情况下，确定运行车辆的工作能力和技术状况，查明故障或隐患的部位和原因，对维修车辆实行质量监督，建立质量监控体系，确保车辆在安全性、可靠性、动力性、经济性、噪声和废气排放等方面具有良好的技术状况，这是实行“视情修理”制度的前提和保障。发动机性能直接影响到汽车的动力性、经济性和排放等性能，发动机综合性能检测是汽车检测和维修的重要工作。本文以某种发动机综合性能计算机检测系统为例，介绍了发动机综合性能计算机检测系统的基本组成、汽油机和柴油机的主要检测项目、电控发动机故障诊断等功能及其特点，该系统很适合我国的常用车型及修理人员的技术水平。 关键词：发动机，综合性能，检测，分析 Abstract Automobile is in use process, its technical status will be as trip mileage of extended and gradually becomes poor, cause performance lowers, economy becomes poor, reliability, safety of malnutrition and reduce pollution is serious. To slowing auto in use process performance of decreasing speed and prolong the service life of, in addition to improve conditions of use, use method outside, attention should also be paid to automotive technical developments in research, the symptoms change regularity, the car timely diagnosis and testing, then pertinently maintenance and repair. For car execute regularly or regular comprehensive performance testing aims at non-dismatiement circumstances, to determine operational vehicle work ability and technical status, find out the hidden dangers of fault or causes and sites, to implement repair vehicles quality supervision, establish quality monitoring system, ensure vehicles in safety, reliability, performance, fuel consumption, noise and emission wait for a respect to have good technical condition, this is to implement the visual feeling repair system prerequisite and the guarantee. Engine performance directly affect the car performance, fuel consumption and emissions, such as performance, engine performance integrated detection is car testing and servicing of the important work. Based on some engine performance integrated computer detecting system as an example, this paper introduces the engine performa