柴油机发电机组喷油器的保养与维护

2025-03-17 02:25:18
推荐回答(1个)
回答1:

柴油发电机组喷油器针阀件在长期的工作中,由于受到高压油的冲刷、机械杂质的研磨和压力弹簧的落座等作用,会使针阀和阀体的配合表面受到磨损,从而引起喷油前的泄漏和断油后的滴油的现象,造成雾化不良、燃烧不完全、炭烟剧烈增加、积炭严重。所以,对喷油器必须进行定期保养与维护。

1、将发电机组喷油器从缸盖下卸下,进行简单的外部清洗,然后逐一解体、检验、组装,以防止不同喷油器的相同零件在组装时互相掺混。具体的步骤是:先将喷油器的喷孔向下夹紧在台钳上,拆下调压螺钉护帽、调压螺钉及弹簧清洗干净。再将喷油器调头固定在台钳上,松开偶件紧固螺套,卸下喷油器偶件,作必要的清洗后进行下面的检验。

2、检验分为目测检查和滑动性试验

目测针阀和阀体的配合表面不得有烧灼或腐蚀现象;针阀的轴针不得有变形或其他损伤。作滑动性试验时,须将阀体倾斜60度左右,将针阀帛出约1/3行程后放开,针阀应能其自重平稳地下滑;转动针阀位置,重复上述操作,如果针阀不是在任何位置都能平稳地下滑,则应更换针阀偶件。

3、组装

清洗本体及其油道,将调压弹簧、调压螺钉部分组装在一起。注意调压螺钉不能拧得太紧,这样在后期进行性能检查时便于排气和整体清洗。将可用的或更换后的针阀偶件放在装有干净柴油的塑料盆中,来回油动针阀进行彻底清洗。使喷油器调压部分(应在下方)固定在台钳上,将针阀偶件按定位要求扣在结合面上,而后拧紧偶件紧固螺套,再进行下面的性能检查。
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