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1.在校验喷油器时,常发现少数喷油器压力过低,甚至无压力,喷油雾化不良,滴油严重。拆检时发现其原因是喷油器顶杆磨损严重,当顶杆窝孔磨深后,顶杆就顶不到针阀,即使把调整螺钉拧到底,喷油压力也不会升高。对此,我们在修复实践中找到了就地取材的好办法。将旧针阀上端夹在台钳上,用手锤击断,磨去多余部分,取长度2～3毫米,平面向下装进顶杆窝孔中,然后再拧进调整螺钉,把喷油压力调整到标准值就足够了。即使是下一次再校验喷油器时丢失也无妨,还可采取上述同样的办法进行修复。
1. In verifying the injector, often found a few injector pressure is too low, or even no pressure, spray atomization, dripping oil serious. Disassembled found that the reason is that injector mandrel wear serious, when mandrel nest grinding, the top of the needle on the needle, even if the adjustment screw in the end, the injection pressure will not increase. In this regard, we found in the repair practice a good way to get the spot. The old needle on the top clamp on the vise, hammer off by hand, rub off the excess part, take the length of 2 to 3 mm, the plane down into the jack nest hole, and then screwed into the adjustment screw, the fuel injection The pressure is adjusted to the standard value is sufficient. Even the next time you check the injector is lost anyway, you can also take the same approach to repair.