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<h1 class="h1">避免燃油泵柱塞损伤的步骤</span></h1>
<div class="text">发布来源：重康电力（深圳）有限公司　　发布日期: 2024-08-12　　访问量:2756</div>
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<p>组零部件损伤和损伤防护法的研究在近年来逐步加强，世界上许多国家都在紧锣密鼓的展开损伤和磨损防护的研讨，由于通过研究可大大地增强柴油发电机多见件的寿命，节约材料和能源。以柱塞与套筒的磨耗为例，其磨损主要是柴油发电机中残渣的功效及其髙压柴油发电机冲洗所致使。其普遍的磨损位置是柱塞顶端与螺旋式边的正中间一部分和套筒的进、出进油口周边。磨损后表层呈昏暗色。</p><p>有一部康明斯柴油发电机震动较大，同时排烟声音异常。停机后，柴油发电机在怠速时运行平稳，由怠速向中速过渡时柴油发电机振动较大。初步认为是喷油咀作业不好，为此，将6个喷油嘴从柴油发电机上拆下进行清洗校正，结果6个喷油咀雾化良好，仅喷油压力有差异（差值为1MPa左右）。将6个喷油嘴通过调节内部垫片厚度将喷油压力调至25 MPa（规定为24.5～25.3MPa）。装车试验，结果故障依旧。</p><p>根据上述事故状况，问题可能出在喷油泵上（该柴油发电机上匹配的喷油泵为VE型分配式喷油泵）。将燃油泵从车上拆下，经清洁后，装到柴油泵试验台上进行测试检查。发现喷油泵在怠速时各缸供油量基础一致，可是柴油泵在800转/分钟时的供油量第2缸为4mL/100次供油，第6缸为8mL/100次供油，其余缸为7mL/100次供油，各缸供油量差值较大，不是正常现状，由于分配式喷油泵供油均匀性好是它的一大优点。</p><p>将这台分配式燃油泵拆除进行检验，结果发现柱塞磨损比较严重，并且发现柱塞头部各进油槽边缘磨损程度不一致，致使上述中速时产生供油差距较大、中速运转不稳、震动大、排烟管排烟声音异样现状。</p><p>5、喷油器或出油阀卡住在关闭位置。这样在喷油泵喷油压力太高的状况下，柱塞仍继续泵油，致使把柱塞顶坏。</p><p>根据上述的查看和分析，更换了一个柴发机组新品泵头，并在喷油泵试验台上进行调试。装上后柴油发电机故障状况处理。</p><p>（1）提前存下后备的柴油，这样做的目的是为了避免在为发电机加注柴油时，有水分或极细小的杂物箱随柴油一起注入柴油箱，若油箱内的滤网保护方案不完备的话，水分或杂物就有可能随柴油一起进入到柱塞套内，造成柱塞的异样磨耗。</p><p>（2）尽可能地勤观察燃油箱的油位情形，以做到较大程度地避免柴油发电机在工作时产生燃油中断的事故，因为如发生这种情形，待加注燃油后，低压油路内会存有大量的空气，危害发电机的起动。所以在低压油管与燃油泵连接的进油口处必须进行放气排除，若这时清理作业做得不良，会有少量的油污或杂物进入燃油泵内，对柱塞的磨耗就不可避免了。</p><p>&nbsp;（3）柴油滤清器要做到定期清理，长时间不予清理的话，里面的水分或杂物混入柴油中进入到低压油路，对柱塞形成磨耗。柴油滤清器通常应掌握在每200小时清理更替一次。</p></div><a href="http://www.fdjhs.cn/" target="_blank">http://www.fdjhs.cn</a>
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