汽车、轮船、拖拉机和工程机械的内燃机运行一段时间之后,其外露机件上就会附着灰尘泥土,有的还会产生许多污垢,所以对内燃机要经常进行清洁。清洁作业本身属于每个司机的例行保养范畴,按保养级别来说是最低级的保养作业。正因为清洁作业是最低级的保养作业,所以容易被人们忽视。运行司机中,有相当一部分人没认识到灰尘和污垢除了使人产生龌龊的印象和厌恶的感情之外,还有表现故障的信息作 After a period of operation, internal combustion engines of automobiles, ships, tractors and construction machinery have dust and dirt on exposed parts, and some will also produce a lot of dirt, so the internal combustion engine should be cleaned frequently. The cleaning operation itself belongs to the routine maintenance of each driver, which is the lowest-level maintenance work according to the maintenance level. Because cleaning is the lowest level of maintenance operations, it is easy to be overlooked. A considerable portion of the drivers in operation did not realize that dirt and dirt not only gave rise to the impression of disgust and feelings of disgust, but also information of failure