云贵川公路盘山坡道非常多,因此有很多司机在下坡时采用断油熄火挂档溜坡的方法,企图达到节约燃油的目的。但这种方法能节油吗? 我们在判断“缺腿”故障时,常常旋下可疑火花塞观察,如果发现电极上湿润或有机油,便断定此缸不工作。既然活塞上有气环、油环密封,那么,机油从何而来?只要分析一下活塞环工作情况,就会 There are a lot of road ramps in the Yun-Gui-Chuan Highway. As a result, many drivers use the method of stopping the oil-off and downshift when going downhill in an attempt to save fuel. However, this method can save fuel? We judge “missing leg” fault, often suspicious spark plug unscrewed observation, if found on the electrode wet or organic oil, it concluded that the cylinder does not work. Since the piston ring, the oil ring seal, then, the oil come from? Just analyze the work of the piston ring will