“瓦”指的是连杆轴瓦和曲轴瓦,“烧瓦”是因轴瓦和轴颈产生较长时间的干摩擦而引起.烧瓦是发动机较为严重的事故.但烧瓦程度有轻有重,轻者,可采用“0”号砂纸打磨轴颈和轴瓦.经打磨后,如二者配合间隙增加,可在瓦片背部垫上适当厚薄铜皮,再稍为刮削配合的瓦片,就可恢复工作.重者,烧伤轴颈,甚至使曲轴报废.这种事故发生后,修理难度大,修理成本比较高.因此,要尽量预防这类情况的产生,本文着重谈谈烧瓦的预防和诊断. “W” refers to the connecting rod bearing and crankshaft bearing bush, which is caused by the dry friction between the bearing bush and the journal for a long time.The burning bush is a serious accident of the engine, but the burning degree is light and heavy , Light, you can use “0” sandpaper grinding journals and bushings.After grinding, as the two with the gap increases, in the tile back pad the appropriate thickness of copper, and then slightly scraping with the tile can be restored Work, heavy, burn journals, and even the crankshaft scrapped.This accident occurs, the repair is difficult, the repair cost is relatively high.Therefore, to try to prevent the occurrence of such cases, this article focuses on the prevention and diagnosis of tile .