Analyze the cause of turbocharger pressure drop
Analyze the cause of turbocharger pressure drop
The main function of turbocharging is to increase the air intake of the engine, thereby increasing the power and torque of the engine, and making the car more powerful. However, there will be a drop in the boost pressure during use, which will affect the work efficiency and need to be found in time. out the reason.
Turbo pressure drop:
1. The air filter element of the turbocharger is dirty and dusty, which causes blockage, which increases the intake resistance and reduces the boost pressure. Oil dirt adheres to the air passage inside the compressor, and oil dirt adheres to the air passage inside the intercooler, which increases the resistance when the airflow is flowing, the compressor pressure drops, and the efficiency decreases.
2. The seal ring of the compressor shaft is damaged, the airflow leaks, and the pressure drops. Due to the poor combustion of the diesel engine, severe carbon deposits and damage to the floating bearing, the turbine rotor components increase the rotational resistance of the turbine, and the speed of the turbine decreases, resulting in a drop in boost pressure.
3. The muffler of the exhaust pipe is blocked and the exhaust is not smooth, which will make the back pressure of the turbo exhaust too high, which will also lead to a decrease in the boost pressure. Diesel engine cylinder liner, piston, piston ring, valve and valve seat ring and other parts are seriously worn, and the leakage of supercharged air into the cylinder increases, which reduces the supercharging pressure and compressor efficiency.
The blocked filter element of the turbocharger should be cleaned or replaced in a targeted manner, the oil and dirt in the air passage should be cleaned, the air flow should be clear, the sealing ring should be replaced, the carbon deposit adhering to the rotor shaft should be removed, the floating bearing should be replaced, and the exhaust pipe should be cleared. , to make it unobstructed, and replace the matching pair, such as cylinder liner, piston, piston ring and air valve, etc., and the attached oil should be thoroughly cleaned to reduce the air circulation resistance and increase the boost pressure.
