混凝土搅拌车活塞敲缸异响的判断和处理！_行业资讯_自动混凝土搅拌机知识_自动混凝土搅拌机_自动混凝土搅拌车厂家

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混凝土搅拌车活塞敲缸异响的判断和处理！

所属分类：行业资讯发布时间：2021-03-01 来源：http://www.sqjituan.cn/ 浏览量：0

自动混凝土搅拌车在行驶的过程中会出现活塞敲缸的异响，下面为大家讲解一下自上料搅拌车这种情况的判断，还有处理方法。

Automatic concrete mixer in the process of driving will appear piston knock cylinder abnormal sound, the following is to explain the judgment of this situation from the feeding mixer, there are processing methods.

产生活塞敲缸的主要原因有以下几个方面：活塞同气缸壁的间隙太大。WD615系列发动机活塞裙部和气缸的标准间隙为0.143-0.182，大磨损限度为0.35—0.40。发动机运行一段时间后，气缸活塞产生磨损，加之润滑不好，活塞和气缸的配合间隙由于磨损而增大，并在一道气环略下处出现较严重的台阶，使活塞敲击气缸发出异响。活塞裙部和气缸在运行一段时间以后，磨损严重，造成严重失圆而敲缸。个别连杆由于种种原因产生变形，造成活塞偏磨，间隙变大而敲缸。活塞敲缸会导致发动机燃油消耗过高、发动机窜机油、机油耗量多、经济性差。当活塞敲缸严重时，还会拉碎活塞，打坏气缸，以致于连杆断裂，打坏气缸体。

The main reasons for piston knock are as follows: the clearance between piston and cylinder wall is too large. The standard clearance between piston skirt and cylinder of WD615 Series engine is 0.143-0.182, and the large wear limit is 0.35-0.40. After the engine runs for a period of time, the piston of the cylinder is worn, and the lubrication is not good. The clearance between the piston and the cylinder is increased due to the wear, and a serious step appears at the lower part of an air ring, which makes the piston strike the cylinder and make an abnormal noise. After running for a period of time, the piston skirt and cylinder are worn seriously, resulting in serious out of round and knocking cylinder. Some connecting rods are deformed due to various reasons, resulting in eccentric wear of piston, larger clearance and cylinder knock. Piston knock will lead to high fuel consumption, engine oil channeling, high oil consumption and poor economy. When the piston knocks the cylinder seriously, it will also break the piston and damage the cylinder, resulting in the fracture of the connecting rod and the damage of the cylinder block.
自动混凝土搅拌车

自上料搅拌车活塞敲缸的判断方法：

Judgment method of piston knock of self feeding mixer

(1)逐缸断油：采取逐缸断油的方法来确定敲缸的位置，如果断油某缸时，声音明显的减小或者消失，而当恢复供油时能听到明显的“嗒嗒”声，说明该缸活塞敲缸。

(1) Cylinder by cylinder oil cut-off: the method of cylinder by cylinder oil cut-off is adopted to determine the knock position. If the oil cut-off reaches a certain cylinder, the sound obviously decreases or disappears, and when the oil supply is restored, the obvious "click" sound can be heard, indicating that the piston of the cylinder knocks.

(2)为了进一步证实该缸活塞敲缸，可以将该缸的喷油器卸下来，向气缸内加入少量的CD级中增压机油(起密封作用)，再装好喷油器，发动发动机，敲击声消失或者减弱，运行一会敲击声再度出现，则是该缸活塞敲缸无疑。

(2) In order to further confirm the knock of the cylinder piston, the fuel injector of the cylinder can be removed, a small amount of CD grade medium supercharging oil can be added into the cylinder (which plays a sealing role), and then the fuel injector can be installed, and the engine can be started. If the knock disappears or weakens, and the knock appears again after running for a while, the knock of the cylinder piston is undoubted.

遇到活塞敲缸可以采用以下方法处理：发动机起动后，低温运行时有敲击声，温度正常后，声音消失，可以暂不处理，继续运行。发动机温度正常时，有明显的敲击声，应尽量避免高速运行，尽快拆卸维修。拆下气缸盖，抽出活塞以后，发现气缸严重失圆、拉伤，或者活塞和气缸的间隙太大，应进行更换，更换气缸套、活塞及活塞环。如果发现(混泥土搅拌车)连杆变形，应尽量更换。

When the piston knocks the cylinder, the following methods can be adopted: after the engine is started, there is a knock sound when the engine is running at low temperature, and when the temperature is normal, the sound disappears, so it can not be treated temporarily and continue to run. When the engine temperature is normal, there is obvious knocking sound. Try to avoid high-speed operation and disassemble for maintenance as soon as possible. After the cylinder head is removed and the piston is pulled out, it is found that the cylinder is seriously out of round, strained, or the gap between the piston and the cylinder is too large, so it should be replaced. The cylinder liner, piston and piston ring should be replaced. If the connecting rod of concrete mixer is found to be deformed, it should be replaced as far as possible.

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Thank you for reading, hope the above content is helpful to you, if you want to know more wonderful content, please click: automatic concrete mixer http://www.sqjituan.cn .

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