A consultation call from the owner of the Caterpillar 320D excavator, the excavator appeared "Caterpillar excavator engine black smoke, insufficient output power" phenomenon
The boss said on the phone, "My machine is a 320D Caterpillar excavator. I haven't got any improper operation recently, but the engine emits black smoke, and the output power is insufficient." Then I asked boss Zhang some related questions. 320D mining black smoke "has done a detailed failure analysis:
1. Boss, when the smoke is suddenly lifted when the throttle is lifted or when the load is heavy? Answer: both
2. The boss, what kind of job is your excavator used for? What are you working on recently? reply:
My excavator is generally used on construction sites.
Caterpillar 320D mining black smoke failure analysis:
The basic reason for the black smoke of the excavator is insufficient gas supply and incorrect ignition. The common reasons for this failure are the following reasons: First, the atomization of the injector is not good. Second: The intake is insufficient. Misleading cause four: air filter clogging cause five: body temperature is too cold cause six: turbocharger low speed cause seven: serious exhaust.
Caterpillar 320D mining black smoke "solution process:
1 Check whether the air filter is normal and find that there is no problem with the filter.
2 Check the turbocharger, and find that the axial sway of the turbocharger rotor is too large. Careful observation shows that the compressor end blades have friction with the casing and are seriously damaged.
3 Other items are normal.
