What are the reasons for insufficient combustion of diesel generator sets

When using diesel generator sets , black smoke sometimes occurs, which is caused by insufficient combustion of diesel. Haixing combined many years of practical experience to find that the emergence of black smoke not only causes damage to the working environment, but also shortens the service life of the engine. In order to reduce the damage caused to the generator set by insufficient diesel combustion, Haixing will analyze the reasons for abnormal black smoke from the diesel unit.

Insufficient oxygen in the cylinder will cause insufficient combustion of diesel. Insufficient oxygen means insufficient air. The main reasons are in the gas circulation system. The following are several reasons that affect the gas circulation system:
1. The parts of the dispenser mechanism are loose, worn, and deformed, the relative position of the camshaft gear and the crankshaft timing gear changes, and the valve opening and closing time is incorrect.
2. The muffler is corroded, carbon deposits or oil stains.
3. The gap between the inlet and exhaust valves is too large, which reduces the valve opening.
4. The air filter element accumulates too much dust and is blocked, resulting in a decrease in the amount of air entering.

Secondly, there are problems with diesel atomization, which will also cause diesel to not burn fully. If diesel cannot atomize, it will cause diesel to not burn fully, which is related to the following aspects:
1. The fuel injector pressure is adjusted too low.
2. The fuel injector pressure regulating spring is broken or issuing a clamp.
3. The needle valve and valve seat of the fuel injector are deposited, and the needle valve is stuck or worn too much.
4. The pressure relief ring belt of the oil injection pump outlet valve of the fuel injection pump is too worn, causing the fuel injector to drip oil.

In addition, if there is no problem with the above, it may be a problem with the supply time and quantity of diesel. Due to the error in time or quantity, the diesel will not be able to completely burn and form carbon deposits, and even black smoke will appear.

The above is the reason why diesel fuel in diesel unit is not fully burned. I hope it can help you. Haixing reminds everyone to pay attention to letting diesel fully burn to ensure the normal operation of the diesel generator unit.