论文部分内容阅读
一、喷油嘴总成壳体内部油道短路有一台东方红—60推土机在推土作业中第二缸不工作,拆下喷油嘴总成在喷油嘴试验器上进行校正,结果喷油嘴无压力,经反复拧动喷油嘴调节螺钉也不奏效,发现在泵油时,柴油全部从喷油嘴调节螺钉处冒出来,更换新喷油头都无济于事。根据上述现象,我们检查了喷油嘴总成进油道部分:用手指堵住喷油嘴总成壳体上的出油口,然后从进油口吹烟气,结果烟气全部从喷油嘴总成壳体中孔冒出。可以断定,柴油在喷油嘴总成进油道里短路了。我们把一根φ1.5毫米带尖的细钢丝从喷油嘴总成进油口通入,结果钢丝尖头从喷油嘴总成壳体中孔露出来,这说明柴油是从进油口直接进入喷油嘴体中
First, the nozzle assembly shell short circuit within the oil tank There is a Dongfanghong-60 bulldozer bulldozing in the second cylinder does not work, remove the nozzle assembly in the nozzle tester for correction, the results of spray No pressure nozzle, repeatedly screw nozzle adjustment screw does not work and found that when the pump oil, diesel fuel nozzle adjustment screw all come out at the replacement of the new nozzle are of no avail. According to the above phenomenon, we check the fuel injector assembly into the part of the oil passage: with your fingers plug the oil outlet on the housing of the nozzle assembly, and then blow smoke from the inlet port, the result of all flue gas injection Hole in the mouth of the mouth of the shell assembly. It can be concluded that diesel fuel injector assembly into the oil in the short circuit. We put a φ1.5 mm pointed steel wire from the nozzle assembly into the oil inlet, the results of the steel tip from the nozzle assembly shell hole exposed, indicating that diesel is from the inlet Directly into the nozzle body