The excavator smokes, also known as "the excavator burns oil", which is usually caused by too much oil entering the combustion chamber of the excavator for combustion.. the combustion of oil is very harmful, which may lead to the increase of carbon deposition in the engine cylinder, insufficient combustion, reduction of engine power, unstable idle speed, weak acceleration, engine lubrication, etc., and may even lead to the complete scrapping of the engine.. the cause and solution of the blue smoke fault of the excavator, It is also necessary to start from the oil circuit and other aspects.. the following is the reason and prevention of the failure of the exhaust blue smoke of the excavator
Cause analysis of blue smoke from excavator
1. Excessive oil use When the engine oil is excessive, the crankshaft will be rotated by the high-speed motor, which will make the engine oil splash on the cylinder wall and blow into the combustion chamber
2. Whether the sealing ring of the supercharger of the excavator is damaged.. it is not oily. It is necessary to consider the damage of the supercharger sealing ring and the piston ring, the correct installation direction of the piston ring, and the possibility of abnormal wear with the piston liner
3. The oil passage is cracked in the cylinder head.
4. There is oil leakage in the valve oil seal. The oil will seep into each cylinder from the valve oil seal. Replace the valve oil seal
5. Cylinder pad ablation.. oil will penetrate into the cylinder from the broken cylinder pad. Replace the engine cylinder pad
As shown in Figure 6, the water separator fails. The decanter is used to separate the oil vapor in the crankcase. If the oil vapor directly enters the cylinder, the water separator will be replaced if it is damaged.
7. The wrong type of oil used or the wrong type of oil replaced will also cause blue smoke from the excavator. Try not to learn to use different types of oil
8. The air filter is blocked. The blockage of the air filter will increase the resistance of the cylinder in the process of intake, and the intake is not smooth. There is a certain negative pressure in the cylinder, and the lubricating oil will also be sucked into the combustion chamber.
The blue smoke of the demonstration solution taken by the excavator
1. The oil problem should not be increased Keep in mind that if too much oil is used, the oil pressure management will continue to increase, which greatly increases the probability of oil penetrating into the cylinder
2. Avoid long-term rapid acceleration and high-speed driving. Excessive use of the engine may cause the oil film in the cylinder to break, poor lubrication of the piston to form dry wear, resulting in wear and oil burning
The relatively long service life of higher viscosity oil is the best choice for excavators, which can increase the more viscous seal between the piston and the cylinder wall.
4. Check the dipstick regularly Students should have a good habit of checking the car. They should check the engine oil regularly. They should not rely on the engine oil alarm lamp because of excessive development. It may be too late for Komatsu excavator equipment maintenance and other engine oil alarm lamps to light up
5. Change the engine oil regularly.. changing the engine oil regularly according to the maintenance cycle and regular maintenance are the most effective preventive measures
