The excavator diesel engine is the source of the excavator's driving force. If the diesel engine engine is not good, it will quickly endanger all the normal power of the excavator. The most equipment failure of an excavator engine is sleepiness, high temperature, noise, and carbonization. Today, I think I would like to talk to my friends about why there is carbon deposits in diesel engines. How do you solve the carbon difficulties? Failure analysis of excavator equipment: Why is there carbon on the diesel engine? How do excavator repairers solve this problem? What is carbon deposit in the beginning? Carbon deposition actually means that there is no compound that can be completely ignited. When the engine is working, the residues of unsaturated fatty olefins and fiber cells in the grease and fuel will be caused by the combustion of ethanol at high temperatures. This kind of gray-black coking chemical substances are generally called carbon deposits, and carbon deposits can be divided into Carbon deposits on valves, combustion chambers and intake manifolds.
Why does the excavator engine have carbon deposits?
Excavator engines have various mechanical failures during the whole process of application. Carbon deposits are a common one. Not to mention, I will immediately tell everyone about the three causes of carbon deposits in excavator engines.
1. Excavator usually uses too much mud in the fuel oil. In daily life, the fuel is unlikely to ensure complete purity. The filter element is all over the limit. A part of the small mud in the fuel is ignited and carbonized and accumulated in the cylinder, which will cause carbon deposition.
2. The fitness sports parts in the engine are damaged. When the engine is running at a high speed, the cylinder liner, valve, piston rod, piston ring, etc. in the cylinder will be damaged due to broken slag. The slag will burn through and accumulate in the cylinder, resulting in valve carbon deposits.
3. The intake manifold is not pure enough, and the filter element cannot completely filter the specific gravity of the mud that falls into the gas. Part of the specific gravity of the mud will enter the combustion chamber, and carbon deposits will appear after igniting and carbonizing.
What damage does engine carbon deposit cause?
Analysis of mechanical failure of excavator: Why does the engine deposit carbon? How does the repairman solve it?
1. Carbon deposits will reduce the output power of the engine, resulting in uneven output of the engine's driving force; it will also increase fuel consumption.
2. The more carbon accumulates in the drying groove of the piston rod, the closer the piston ring is, the piston ring is deformed, or the cylinder liner and cylinder are damaged.
3. A lot of carbon deposits sometimes block the fuel injection port. At this time, try to disassemble and assemble the diesel pump.
4. When too much carbon deposits at the valve, the valve will be unevenly compressed, and it will also cause mechanical failures such as valve stem cracking and valve car chassis cracking.
5. Severe carbon deposits in the combustion chamber cause cylinder knocking, low reduction ratio speeds up and noise, damages the piston rod and engine crankshaft of the engine, and damages the safety performance of the excavator.
What is the solution to carbon deposits
Analysis of mechanical failure of excavator: Why does the engine deposit carbon? How to solve the actual operation of special tools?
1. In order to prevent carbon accumulation, choose high-quality grease and fuel as excavators, because wax and fiber batteries in the fuel are the key reasons for carbon accumulation.
2. When engine carbon accumulates, users can purchase carbon preservatives to reduce fiber cell absorption and residues, which is one of the ways to reduce carbon accumulation.
3. The quick way is the mechanical polishing method. Friends can use wire brushes, scrapers, bamboo chips or emery cloth to polish and clean carbon deposits.
