索纳塔轿车发动机故障自诊断

Self-Diagnosis of Engine Trouble of SONATA Car

北京现代索纳塔轿车采用2.0L、2.4L4缸发动机和2.7LV6发动机,这几种发动机均采用顶置双凸轮轴、多点燃油喷射和直接点火系统。发动机ECU采用OBD-2型自诊断通信系统,如果发动机控制系统出现故障,ECU会存储相应的4位数故障代码,维修时可利用扫描仪提取故障代码。以2.4L4缸发动机为例,将有关问题简述如下。

SONATA is equipped with 2.0 L,2.4 L 4-cylinder engines and 2.7 L V6 engine.Double overhead camsha ft,multi-point fuel injection system and direct ignition system are used for these engines.The OBD-2 type self-diagnosis communication system is applied to the engine control unit ECU.When trouble occur in the engine control system,ECU will store a four-digit error code corresponding to the trouble,and the error codes can be read with a scanner when troubleshooting. In the paper,the relative questions are described with a 2.4 L 4-cylinder engine as example.