故障现象一辆2012款上海通用别克英朗轿车(采用LDE发动机),累计行驶约2万km,出现储液罐内有大量机油的现象。故障分析接车后首先外观检查,发现储液罐内有很多的油液混合物。接着检查发动机内机油油位,发现严重不足。打开机油加注口检查,也存在很多乳状物质。根据故障现象分析,造成油液混合的原因主要有:气缸垫损坏,使得高压机 Symptoms A 2012 Shanghai GM Buick Hideo sedan (using LDE engine), a total of about 20,000 km, there is a lot of oil tank phenomenon. Failure Analysis After the first appearance of the vehicle inspection and found that the tank has a lot of oil mixture. Then check the engine oil level, found a serious shortage. Open the oil filling check, there are a lot of creamy substance. According to the failure phenomenon analysis, resulting in the main reasons for mixing oil: cylinder pad damage, making high-pressure machine