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Reasons for Failures of Generator Sets Turbochargers

Oct. 20, 2021

Can you analyze the reasons for the failure of the turbocharger of the generator set? Let's discuss it together. First of all, the boost pressure drop means that the value of the boost pressure is relatively small under the condition that the load carried by the generator set is connected. The decrease in the speed of the turbocharger and the decrease in the boost pressure are mainly due to the failure of the exhaust gas turbine or the mechanical part. This failure may be due to the deformation of the nozzle ring blades due to high temperature, which increases the nozzle flow area; or the exhaust pipe joint There is a leakage phenomenon, so that the exhaust gas energy that can be used in the turbine is reduced. The mechanical factor is that the turbocharger has not been maintained for a long time, and there is too much carbon deposit on the impeller inside the turbine shell, which increases the rotation resistance of the rotor group.


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If the boost pressure is reduced and the speed of the turbocharger does not change significantly, the fault generally lies in the compressor. For example, the air filter element is too dirty, and the airflow channel inside the compressor is contaminated by dust and grease, resulting in the efficiency of the compressor. Drop and so on. Excessive boost pressure is often accompanied by supercharger overspeed. The reasons for this failure are the poor operation of the fuel supply system, which results in poor combustion of individual cylinders; the exhaust valve leaks, which causes the exhaust temperature to be too high; the turbocharger nozzle ring is blocked by dust and carbon deposits, resulting in a reduced circulation area. The gas ejection speed is too fast, so that the rotation speed of the rotor group is accelerated.


When the supercharger is running at a certain stable speed, the amount of air delivered to the interior of the combustion chamber is insufficient, and the delivered air pressure fluctuates greatly, and at the same time, there is a panting sound at the compressor. This phenomenon is called " Surge". The factors that cause this failure include blockage of the airflow channel, deformation or looseness of the diffuser of the turbocharger or the blades of the nozzle ring, resulting in a change in the shape of the airflow channel, making the turbocharger and the generator set unable to match; improper operation wait.


Jiangsu Starlight Power Generation Equipment Co., Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. The company has a registered capital of 218.88 million yuan. The company covers an area of 86,000 square meters and a building area of 55,000 square meters. There are more than 660 employees, including 456 professional technicians and 106 senior technicians. It has 46 sales and service outlets nationwide. The main products are diesel engines, generator sets, and diesel generators, providing users with a one-stop service of design, supply, debugging and maintenance at any time. Starlight has always insisted on using first-class talents, building first-class enterprises, manufacturing first-class products, creating first-class services, and making every effort to build a first-class domestic enterprise. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to sales@dieselgeneratortech.com.

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