What is the reason for more carbon deposition in diesel engines?

Everyone is concerned about "what is the cause of carbon deposition in diesel engines?" Let me explain something to you:

There are many reasons for carbon deposition in diesel engines: poor diesel quality and many impurities; The lubricating oil in diesel engine has long service life and high rubber content; The piston ring is loose, the opening is too large, and the gap between the valve guide and the valve stem is too large, which causes the engine oil to escape into the combustion chamber for combustion; The ignition timing is too early or too late, and the fuel supply of the fuel injection pump is too large; Diesel oil runs at low temperature for a long time or the cylinder seal is worn or damaged, resulting in incomplete fuel combustion; The injector pressure is too low, the atomization is poor, and there is oil dripping and oil leakage; The diesel engine is overloaded for a long time or the driver often slams on the accelerator. The effects of more carbon deposition are: improving the compression ratio of diesel engine; Increase the temperature of diesel engine; Lubricating oil is deteriorated, and parts are worn, deformed and adhered due to heating; The diesel engine deflagrates and knocks, damaging parts and shortening the service life of the diesel engine.