First, the lack of oil or oil supply lag
1, when the load and speed of the diesel engine turbocharger is increased, the amount of oil lubricating oil turbocharger must also increase, because diesel engine high load operation, the turbocharger speed is very high, even if only a few seconds on the turbocharger bearing oil shortage will cause bearing damage.
In 2, the replacement of oil and oil filter, oil filter pre filled with clean, first start the engine after, should start the engine idle speed to maintain enough long time running until the oil pressure stable after accelerated, otherwise the bearing turbocharger may be damaged due to lack of lubrication during startup.
3, when the diesel engine is inclined to work (part of the load or full load operation), if the oil level is too low or the inhalation of air, will cause the oil pressure is reduced, even if the time short also may make the turbocharger damage due to lack of lubrication oil.
Two, external debris or sediment into the lubrication system
The wear and damage of the engine oil containing the debris or sediment is much more serious than the damage to the diesel engine bearing, because the speed of the turbocharger is much higher than that of the diesel engine. If the turbocharger is damaged, should find out the causes of oil stolen goods and eliminate, or even put on a new turbocharger will be damaged, it may also damage the development of diesel engine. When the stolen goods mixed particles in engine oil of large enough to block the internal turbocharger oil passage, supercharger will be damaged due to lack of lubrication oil. In the replacement of oil and oil filter, in the case of conditions can be extracted in diesel engine oil sample for analysis, which will help to prevent the damage, should be replaced in accordance with the deadline stipulated in the manual to replace the oil filter, can never be prolonged.
Oxidation or deterioration of lubricating oil
Diesel oil oxidation or deterioration will be formed after the sludge deposited, sludge will affect the performance and life of the turbine to increase. When the oil sludge state it can also affect the life of diesel engines, namely rotary motion of turbocharger shaft will throw oil to the inner wall of the casing, which is attached sludge and deposited on the inner wall of the shell, when the sludge deposition of excessive influence of turbine end bearing neck return oil, deposited in the vortex wheel end bearing the sludge due to high temperature exhaust gas to be baked into hard coking and coking when spalling may make the turbine end bearing and shaft neck wear. And before the wear will occur oil leakage phenomenon. Turbocharger turbine
At the end of engine oil leakage, it is necessary to check whether the oil return pipe and the diesel engine vent pipe of the North V3 turbocharger are blocked. The formation of sludge deposition is due to diesel oil oxidation and deterioration caused by, and the cause of oil oxidation and deterioration of the gas diesel engine is overheating, from before the piston and the cylinder through too much oil, mixed with diesel oil, lubricating oil, cooling water leak into the improper selection and not in accordance with the provisions of the deadline for replacement of oil etc..
Intake or exhaust system of external foreign body entering diesel engine
North Benz V3 parts of the turbine and compressor impeller are in high speed motion, once the external foreign body into the engine intake and exhaust system Soybean Milk damaged impeller; small objects (such as sediment) will erode the impeller to wind guide leaf angle change; large and hard objects will cause the blade rupture; soft objects (such as cotton) will bite the impeller rotation direction on the blade roll. If there is an external foreign body into the impeller damage will damage the entire supercharger, it must be completely replaced. Usually, the damage of impeller due to air filter are embedded in the metal sheet or replace the filter when the inlet pipe into the debris, which is sucked into the compressor. If you do not replace the filter or does not exclude the intake pipe of debris, is likely to continue to damage the turbocharger for the new.
Operating temperature is too high
In general, the heat source that causes the operating temperature is too high is the exhaust gas from the engine. The exhaust gas temperature is too high to directly or indirectly damage the supercharger. Direct damage, that is, due to the high temperature of the middle shell overheating, and turbine shell material received corrosion or deformation; exhaust gas temperature is too high will cause the turbine shell cracking. Indirect damage, namely when the exhaust gas temperature is too high, the extra heat emphysema of the rotor of the turbocharger assembly to accelerate, and work in higher than the design speed condition, if this happens, the compressor impeller once or repeatedly due to high stress load and cracking of turbine impeller will decrease due to the strength of materials under high temperature and improve the turbine speed and cracking. The possible reasons for the increase of exhaust gas temperature are as follows: the ratio of air to fuel of engine is not right, there are problems with the timing of the engine, the exhaust gas receives the throttle, the exhaust gas is oxidized to detect the problem, or the other control system of the engine has problems.

In short, the exhaust turbocharger work is characterized by high temperature and high speed conditions, in order to ensure their normal work, the use should pay attention to the following matters:
1, the new or newly repaired beiben accessories V3 turbocharger, before using the application of hand toggle rotor, check whether the dead phenomenon and abnormal sound; in the work if a sharp sound, should immediately stop. If the turbocharger vibration phenomenon, may be due to air compressor impeller, bearing or turbine impeller damage caused by, should be replaced.
2, must ensure that the compressor air cleaner, air filter cleaning. Do not allow foreign matter into the compressor and turbine; prevent dust accumulation on the impeller, otherwise it will reduce the efficiency of the compressor.
3, must ensure that the turbocharger with reliable lubrication, lubricating oil to clean oil to normal temperature, not too high or too low, the pipe joint should be sealed, no drip like, supercharger lubrication before use (adding quantitative oil through the supercharger oil inlet pipe).
4, should strictly control the turbine inlet temperature, may not be required to adjust the fuel system of diesel engine, shall not change the amount of oil supply.
5, should often listen to check the operation of the supercharger; if the supercharger is working properly, the diesel engine has just stopped the supercharger rotor can continue to run for a certain period of time.
6, North Ben V3 fittings connecting pipe should be assembled correctly, the demolition shall not be arbitrarily changed, and should effectively guarantee the reliability of the connection.
7, start the engine, turbocharger should ensure adequate lubrication; diesel engine shutdown before idle for 3~5 minutes, so that the lubricating oil will burn the heat away, wall sealing ring or deformation of the bearing housing and bearing seizure.