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1.乱拆乱卸,不注意清洁,使得表面精度很高的喷油嘴被污染,或针阀与阀体配错了对。 2.检查、调正不全面、不准确、不及时。如不按期保养,供油提前角经常处于过小状况;检查调正时只注意喷油压力,对于喷雾锥角,雾化状况不作检查等。 3.安装喷油嘴时,为防止漏气,加铜垫、石棉绳太厚,或忘了取出旧垫,又增加了新垫,结果使喷油嘴缩在安装孔内,柴油不能均匀地分布于燃烧室
1. Chaosanluanluan, do not pay attention to clean, making high precision surface of the nozzle is polluted, or needle and valve body with a wrong pair. 2. Check, adjust is not comprehensive, not accurate, not timely. If not regular maintenance, fuel supply advance angle is often too small condition; check the tune only pay attention to injection pressure, for spray cone angle, atomization conditions are not checked. 3. Install the nozzle, in order to prevent air leaks, add copper pads, asbestos rope too thick, or forgot to remove the old mat, and added a new mat, the result of the nozzle shrinkage in the mounting hole, the diesel can not be uniform Distributed in the combustion chamber