Ten days ago, I received a consultation call from the owner of Caterpillar 320d excavator. The excavator appeared the phenomenon of "black smoke from Caterpillar excavator engine and insufficient output power"
The boss said on the phone, "my machine is a 320d Caterpillar excavator, and there has been no improper operation recently, but the engine emits black smoke and the output power is insufficient." then he asked boss Zhang some related questions and made a detailed fault analysis on the problem of "black smoke from Caterpillar 320d excavation":
1. Boss, do you smoke when you lift the accelerator or when you load it? Answer: Yes
2. Boss, what is your excavator usually used for? What work will you do in the near future? reply:
My excavator is usually used on construction sites.
Black smoke fault analysis of Caterpillar 320d excavation:
The root cause of black smoke from the excavator is insufficient air supply and incorrect ignition. The common causes of this fault are as follows: 1. Poor atomization of the fuel injector; 2. Insufficient suction; 3. Incorrect ignition time; 4. Blockage of the air filter element; 5. Supercooling of the engine body; 6. Low speed of the turbocharger; 7. Serious exhaust.
Solution process of "black smoke" in Caterpillar 320d excavation:
1. Check whether the air filter element is normal and find that there is no problem with the filter element.
2. The turbocharger was inspected, and it was found that the axial sway of the turbocharger rotor was too large. Through careful observation, it was found that there was friction between the compressor end blade and the casing, and the damage was serious.
3. Other items are normal.
