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康明斯柴油发电机的气门间隙过大会引起工作无力

作者:康明斯发电机厂家 发布日期:2017-01-04 来源:www.0755fdjz.com 点击:

(1)故障现象  一辆东风EQ2102型越野车,采用康明斯6BT型柴油机,出现行驶无力,同时伴有“嘭嘭”的响声,功率明显下降。

   (2)故障查找分析  起动柴油机进行检查,在原地能够听到“嘭嘭”的响声(非金属敲击声)。进行路试,车辆行驶无力。打开机舱盖进行检查,在空气滤清器出响声特别明显。用手捂住空气滤清器进气口,响声明显减弱,但却出现了“嗒嗒”声。对气门进行检查,发现各缸气门间隙普遍过大,进气门达到了0.45mm左右,而排气门在0.7mm左右,大大超出了原标准(进气门标准间隙为:0.25mm±0.05mm,排气门标准间隙为:0.5mm±0.05mm) 。
该车出现故障的原因是在柴油机更换缸垫后,没有按标准调整间隙,是气门间隙偏大。而热车时也没有进行复查,只是柴油机使用一段时间后气门间隙变得更大,造成气门开启过迟,导致排气冲程使废气不能彻底排出,废气压力高,进气冲程是气缸内的废气进入进气管,而产生“嘭嘭”的气流撞击声。故障导致柴油机充气不足、排气不畅、车辆行驶无力。
(3)故障排除  按照规定重新调整气门间隙。装复气门盖后试车,“嘭嘭”的响声消失,柴油机功率也恢复了正常。热车后有对气门间隙进行了复查,车辆使用中再异常声响。

 


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康明斯动力设备(深圳)有限公司是柴油发电机组系列产品的全球独立制造厂家,是集团旗下专属运营柴油发电机组的销售、出租、维修、消音降噪工程及其售后服务业务,主要生产康明斯静音箱式柴油发电机组、移动式柴油发电机组、固定开架式柴油发电机组三大系列产品,销售渠道网络支持中国区各大省会及直辖市区,Cummins品牌是广大经销商及用户在应急电源领域的首选,可提供高效的电力解决方案。

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相关标签:发电机厂家,柴油发电机厂家,康明斯发电机厂家,深圳发电机厂家,发电机组厂家

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