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With years of experience in designing and assembling complete sets of generator sets

Analysis of oil dripping in the exhaust pipe or booster of the generator set

Time:2023-08-17

Due to the use of pressure seals in multiple parts of the diesel generator engine, such as between the cylinder liner, piston, and piston ring, and between the turbocharger and the turbocharger rotor shaft, this type of seal is generally only fully functional when the engine has about one-third of the load, and slight leakage may occur when the load is low. If the generator set operates under low load, as the operating time continues, the following four faults will occur.

1. Poor sealing of the piston cylinder liner results in oil bouncing upwards, entering the combustion chamber for combustion, and blue smoke coming from the exhaust.

For turbocharged diesel engines, due to low load, no load, and low boost pressure, it is easy to cause a decrease in the sealing effect of the turbocharger oil seal (non-contact), causing oil to enter the turbocharger chamber and enter the cylinder along with the intake air.

3. A portion of the oil that flows up to the cylinder participates in combustion, while a portion of the oil cannot be completely burned and forms carbon deposits at the valves, intake ducts, piston crown, piston rings, etc., while another portion is discharged with the exhaust. In this way, oil will gradually accumulate in the exhaust duct of the cylinder liner, and carbon deposits will also form.

4. If the oil accumulates to a certain extent in the turbocharger chamber, it will leak out from the junction surface of the turbocharger.

5. Long term low load operation of the generator set will lead to more severe wear and tear of moving parts, deterioration of the engine combustion environment, and other consequences that may lead to an earlier overhaul period.

Therefore, diesel generator set manufacturers emphasize the importance of minimizing low load/no-load operating time for both naturally aspirated and turbocharged models, and stipulate that the minimum load should not be lower than 25% -30% of the rated power of the unit.

Guangzhou Saiwei Energy Technology Co., Ltd. is a comprehensive enterprise specializing in design, production, and generator installation. Guangzhou Saiwei has many years of experience in engineering design and installation services. For many years, Guangzhou Saiwei has been committed to providing every customer with comprehensive products and energy solutions, including technical consulting, whole machine and generator supply, operation training, etc., with leading technology and first-class quality. The product range covers land diesel generator sets, marine generator sets, high-voltage generator sets, etc., and is widely used in industries such as power, communication, iron towers, healthcare, financial systems, data centers, etc. Welcome to inquire: 13302262088


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