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Oil Leakage Fault Of 400kw Weichai Generator Set Turbocharger

Mar. 09, 2022

Phenomenon 1: The 400KW Weichai generator set has the characteristics of low fuel consumption, low emission and low noise, it adopts electrostatic spraying technology, which is anti-rust and corrosion-resistant, it has the characteristics of excellent performance, advanced technology, reliable operation and convenient maintenance. Then once the oil consumption is large, the exhaust smoke color is normal, and the power is not reduced. What is the reason for this happening?


Cause of failure: This situation is generally caused by oil leakage.


Treatment measures:

(1) First, check whether the external oil pipes of the diesel engine lubrication system (including the inlet and return oil pipes of the supercharger) leak oil.

(2) Check whether there is organic oil at the exhaust outlet of the supercharger. If there is oil, it can be determined that the sealing ring at one end of the turbine is damaged, and the sealing ring should be replaced.


Phenomenon 2: The oil consumption is large, and the exhaust emits blue smoke, but the power does not drop.


Cause of failure: The oil leakage on the compressor side of the supercharger is caused by the oil leakage on the compressor side of the supercharger, and the oil enters the combustion chamber through the engine intake pipe and is burned. There are the following possibilities:

(1) The oil return pipe of the supercharger is not smooth, and the oil accumulates too much at the intermediate support of the supercharger rotor assembly, and flows into the compressor impeller along the rotor shaft.

(2) After the sealing ring or the oil slinger ring near the compressor impeller is damaged, the oil enters the impeller chamber from this, and then enters the combustion chamber through the intake pipe together with the pressurized air in the chamber.


diesel engine

Treatment measures:

(1) Open the air outlet of the compressor or the straight intake pipe (rubber hose) of the diesel engine, and check whether the oil is adhered to the nozzle and the pipe wall. If so, check whether the oil return pipe of the supercharger is unobstructed. If it is not smooth, it is caused by excessive oil accumulation at the intermediate support, and the oil return pipe should be dredged and then installed.

(2) If it is unobstructed, it is caused by the damage of the sealing ring or the oil throwing ring at one end of the impeller, and the supercharger should be disassembled for repair.


Phenomenon 3: The oil consumption is large, the exhaust emits blue smoke or black smoke, and the power drops.


Cause of issue:

(1) The gap between the piston and the cylinder is worn too much, and the oil escapes into the combustion chamber and is burned.

(2) When the air is sucked by the supercharger, the air encounters a large resistance when it flows, and the pressure at the air inlet of the compressor is low, causing oil leakage into the compressor, and then along with the compressed air. into the combustion chamber to burn.


Treatment measures:

(1) Check whether there is oil in the wall of the intake hose, whether it is flattened, etc., which blocks the airflow or the air filter element is blocked.

(2) If there is oil in the nozzle and pipe wall, the air filter element should be cleaned or replaced.


Jiangsu Starlight Electricity Equipments Co.,Ltd. is one of the earliest manufacturers of generators and diesel generator sets in China. The company was established in 1974 and the company occupies an area. With an area of 86,000 square meters and a building area of 45,000 square meters, it has 64 sales and service departments across the country to provide users with one-stop service of design, supply, debugging and maintenance at any time. Welcome customers to come to consult and visit. Looking forward to your inquiry, please send email to us for details sales@dieselgeneratortech.com

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