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<h1 class="h1">柴油发电机喷油器的使用维护要点有哪几点？</span></h1>
<div class="text">发布来源：康柴（深圳）电力技术有限公司　　发布日期: 2024-08-02　　访问量:2465</div>
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<p>柴油发电机应避免长时间超负荷运行，以防缸体过热而将喷油咀的针阀偶件卡死。对长久封存的柴油发电机，应将喷油咀卸下浸入清洗柴油中，以防针阀腐蚀而无法灵活开闭。</p><p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;柴油发电机喷油咀的操作维护可从改进喷油咀垫的安装位置、按期检查、调节喷油泵以及燃油泵供油提前角、按季节换油并定期保养柴油滤清器、仔细清洗和更替针阀偶件、防止针阀被卡死、保证喷油器喷孔的直径大小符合技术数据、避免柴油发电机长时间超负荷运行等方面着手。本篇由专业柴油发电机OEM主机厂——康明斯电力为大家做技术指导。</p><p>（1）改善喷油嘴垫的装配位置。由于金属在过热条件下作业时较易磨损，而轴针式和孔式喷油咀的喷油泵伸入燃烧室中，大部分表面直接与燃气接触，遭受发热、高压燃气的烘烤，这是造成喷油器针阅锥面与针阀导向面损伤的详细缘由。对于轴针式喷油嘴，为防止喷油咀整体受燃气烘烤，可在喷油器头部加装一适当厚度的纯铜垫圈；对于孔式喷油咀，可加装V形垫，V形垫的规划应使外径尽量大，内孔尽量上大下小，以便于在替换喷油泵时解体井防止燃气侵入。</p><p>（2）定期检查、调整喷油器。喷油咀每作业1000h左右应查看调节一次。若开启压力低于规定值时应将针阀卸出，放入清洗柴油中用木片或铜片刮除积炭，用细铁丝疏通喷孔，装复后再进行调试。要求同一台柴油发电机上各缸的喷油压力差必须小于1.0MPa。</p><p>（3）按期查看、调整喷油泵供油提前角。为使喷油器喷入气缸内的柴油能够混合均匀并完全燃烧，必须定期检验、调节柴油泵供油提前角的大小。若供油时间过早，会使柴油发电机启动困难，产生敲缸、震动加大等事故；若供油时间过迟，则会致使排烟管冒黑烟、机温过高和油耗上升等不良后果。（4）按季节换油，定时维护柴油过滤器。因针阀偶件的精度很高，而且喷油咀喷孔孔径很小，因而必须严格按照季节变化选定规定牌号的清洁柴油，并要定期维保柴油滤清器，经常排放滤清器和油箱内的沉淀油，以避免灰尘、杂质的侵入而加载针阀偶件的磨损。</p><p>（5）仔细清洁和更替针阀偶件。更替针阀偶件时，应将针阀偶件先放入70~80℃的热柴油中浸泡10min，再在干净的柴油中将针阀在阀体内来回抽动，以便彻底清洁干净。这样，才能高效地预防喷油器工作时因防锈油溶化而发生粘住针阀的损坏。另外，清洗针阀偶件时，不得与其他硬物相碰，防止针阅导向面被刮伤。</p><p>（6）防止针阀被卡死。当松开高压油管接头时，如果看到有大量气泡或油沫窜出来，则说明针阀已在开启状态被卡死，因而使汽缸压缩时发生的压缩气体经喷油泵倒流入高压油。此时，若用手触摸高压油管，则感觉不到柴油脉动或脉动较弱。若针阀被卡死，因为油中存在颗粒物及喷油泵中有残余铁屑，将引起该缸喷油嘴工作不佳或不工作。这时，应对针阀偶件重新进行清洗、安装。</p><p>（7）保证喷油咀喷孔的直径大小符合技术说明。如果判明喷油泵喷油压力不足为喷孔扩大所致，对于单孔轴针式喷油泵，可在孔端放一粒直径为4-5mm的钢球，用小锤轻轻敲击，使喷孔局部产生塑性变形而缩小孔径；对于多孔直喷式喷油咀，因其孔数多、孔径小，只能用专制的冲头在孔端轻轻敲击。若装复后仍达不到技术参数，则应替换针阀偶件。</p><p>（8）防止柴油发电机长时间超负载运转。柴油发电机应防止长时间超负荷运行，以防机体太热而将喷油咀的针阀偶件卡死。对持久封存的柴油发电机，应将喷油嘴卸下浸入清洁柴油中，以防针阀腐蚀而不能灵活开闭。</p></div><a href="http://www.gdkmsfdj.com/" target="_blank">http://www.gdkmsfdj.com</a>
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