长期以来,我们在调试62丙型艇重12V180柴油机离合器液压操纵系统时,经常发生液压系统操纵过重。当系统中温度上升到一定程度时,旋转操纵阀的阻力增大,操纵困难,严重时不能进行正车、倒车,也不能实现空车。针对此问题,我们进行了反复试验和分析,终于找到了产生阻力的原因,排除了故障。现分析如下。 For a long time, when we commissioned the hydraulic system of 12V180 diesel engine clutching 62 C type boat, it often happened that the hydraulic system was overloaded. When the temperature in the system rises to a certain extent, the resistance of the rotary control valve increases, and the operation is difficult. In the serious case, no positive car, reverse car, nor empty car can be realized. In response to this problem, we conducted a trial and analysis, and finally found the cause of resistance, ruled out the fault. Analysis is as follows.