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加金沙手机娱乐网址长臂挖掘机租赁出现冒黑烟是怎么回事?

日期:2020-05-20   来源:
夏季施工,机主更担心的莫过于水陆挖掘机出租工作中发动机冒黑烟故障发生了,因为该故障不光对发动机本身造成的损伤非常大,而且检修起来非常费时费力,不少机主还曾有过只能停工高价聘请维修老师傅修理的经历。
During construction in summer, the main concern of the owner is the black smoke failure of the engine in the rental work of the land and water excavator, because the failure not only causes great damage to the engine itself, but also takes a lot of time and effort to repair. Many owners have also had the experience that they can only stop work and hire a repair teacher Fu for repair at a high price.
水陆挖掘机出租工作中冒黑烟
Black smoke from the rental work of land and water excavators
其实冒黑烟故障检修困难是一方面,另一方面需要严格根据故障情况仔细检修,才能保证彻底修好,今天带大家一起看看工程师近期维修的一则冒黑烟故障案例。
In fact, it is difficult to repair the black smoke fault. On the other hand, it needs to be carefully repaired in strict accordance with the fault conditions to ensure complete repair. Today, let's take a look at a black smoke fault case recently repaired by the engineer.
故障现象
Fault phenomenon
故障现象相对来讲有一些特殊性,故障机器在空转时无论高速、低速均正常,没有冒黑烟情况出现,但在加负荷时就有明显的冒黑烟。
The fault phenomenon has some particularities relatively. When the fault machine is idling, it is normal no matter at high speed or low speed, and there is no black smoke, but there is obvious black smoke when the load is added.
水陆挖掘机出租工作中冒黑烟故障现象
Black smoke in the rental work of land and water excavators
检修过程
Maintenance process
想要任何细节和故障原因都不放过,首先在检修机器前一定要先了解机器近期是否有过保养、换件等情况,据悉,该机器在不久前因气门座圈脱落,更换了气门座圈及四配套。之后试车有冒黑烟现象。
If you want any details and failure reasons, you must first understand whether the machine has been maintained or replaced in the near future before repairing the machine. It is reported that the machine has replaced the valve seat ring and four matching parts due to the valve seat ring falling off not long ago. After the test run, there was black smoke.
了解了基本信息后,工程师开始采集性能曲线,发现该机器吸气压只能达到190M。
After knowing the basic information, engineers began to collect performance curves and found that the suction pressure of the machine can only reach 190m.
加金沙手机娱乐网址长臂挖掘机租赁
因为吸气压力较低,根据此情况工程师开始检查进气管,未发现有变形、松脱、开裂的情况。
Due to the low suction pressure, according to this situation, the engineer began to check the intake pipe and found no deformation, looseness or cracking.
接下来工程师继续检查增压器,发现增压器的排气侧叶轮有部分破损。可基本判定故障点就是叶轮损坏造成的。
Next, the engineer continued to check the supercharger and found that the impeller on the exhaust side of the supercharger was partially damaged. It can be basically determined that the failure point is caused by impeller damage.
夏天水陆挖掘机出租工作中冒黑烟故障处理
Troubleshooting of black smoke in the rental work of land and water excavators in summer
故障处理
Troubleshooting
根据检修过程,工程师更换新的增压器后试车机器正常。工作一顿时间后也没有出现类似情况,该问题彻底得到解决。
According to the maintenance process, the engineer replaced the new supercharger and tested the machine normally. There was no similar situation after a working day, and the problem was completely solved.
故障分析
fault analysis 
简单来跟大家做本次故障的回顾和分析,因该故障现象经常发生在进行过气门座圈修理的机器上,所以工程师推断是由于气门座圈脱落后进入 燃烧室,并随着排气进入到增压器的排气侧,将排气侧叶轮打坏,更终导致故障出现。
Let's briefly review and analyze the fault with you. Since the fault often occurs on the machine that has been repaired with valve seat ring, the engineer infers that the fault is caused by the valve seat ring falling off and entering the combustion chamber, and the exhaust gas entering the exhaust side of the supercharger, damaging the impeller on the exhaust side, and finally leading to the fault.
水陆挖掘机出租工作中检查增压器
Inspection of supercharger in the rental work of land and water excavator
前期在检查增压器时,一般是将进气管取下,观察进气叶轮有无损坏,检查轴的间隙是否正常。或观察有无漏机油的情况,很少检查排气侧。一般情况下,排气侧也不会出现问题。但在气门座圈脱落这种特殊情况下,应对排气侧叶轮进行检查 。
In the early stage, when checking the supercharger, generally remove the intake pipe, observe whether the intake impeller is damaged, and check whether the clearance of the shaft is normal. Or observe whether there is oil leakage, rarely check the exhaust side. In general, there is no problem with the exhaust side. However, in the special case of valve seat ring falling off, the impeller on the exhaust side shall be inspected.
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The highlights of this article are provided by the knowledge provided by the long arm excavator rental. There are many highlights in this website. For more details, you can click to enter: We have special customer service to answer your questions
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