195型柴油机排气门卡住的现象比较少见。我们遇到的两例柴油机都是装在一吨翻斗车上,工作条件是90多米的小坡路段,来回倒运小石块,灰尘较多。由于工程车的需要,排气管出口在翻斗车尾部的右下方。经拆开气缸盖检查发现,排气门和排气门导管之间有积炭,而使排气门卡住不能工作。经分析原因如下。 195 Diesel exhaust valve stuck phenomenon is relatively rare. We encountered two diesel engines are installed in a ton of dump trucks, working conditions are more than 90 meters of small slope sections, back and forth to move small stones, more dust. Due to the need of construction vehicles, the exhaust pipe outlet is at the bottom right of the dump truck. After disassembling the cylinder head inspection, it was found that there was coke between the exhaust valve and the exhaust valve guide tube, which made the exhaust valve stuck unable to work. Analysis of the reasons are as follows.