论文部分内容阅读
在修理实践中,经常遇到更换了新喷油嘴后,喷油压力失调或使用中喷油嘴喷油质量变坏的情况。有的机手认为,是喷油嘴质量差,于是好端端的喷油嘴就给判了死刑。柴油机的新喷油器体顶杆孔下陷量,一般为2.5毫米,使用中由于顶杆孔与针阀尾端的长期磨损,使顶杆孔深度增加,喷油嘴安装后,针阀与顶杆孔底出现间隙,引起喷油压力失调或喷油质量变坏。如遇上述情况,可以选择一与顶杆孔径合适的钢球,放入孔内,或把顶杆孔端在砂轮上磨去一部分,减少孔的深度,此故障即可排除。
In the repair practice, often encounter the replacement of a new nozzle, the injection pressure imbalance or the use of the nozzle fuel quality deterioration. Some machine drivers think that the quality of the nozzle is poor, so a good end of the nozzle gave sentenced to death. Diesel new nozzle body ejector hole sag, usually 2.5 mm, due to the mandrel hole and the needle end of the long-term wear and tear, so that mandrel hole depth increases, the nozzle installed, the needle valve and ejector lever Hole at the end of the gap, causing the injection pressure imbalance or fuel quality deterioration. In case of the above situation, you can choose a suitable ball with the mandrel diameter, into the hole, or put the mandrel hole end grinding on the grinding part of the hole to reduce the depth of this failure can be ruled out.