Do you know the structure and matters needing attention of Volvo excavator turbocharger?

Today's Volvo excavator engine is generally equipped with a turbocharger, today's excavator parts Xiaobian with a detailed understanding of the structure and use of turbocharger matters needing attention.
How does it work?
Volvo construction machinery accessories Xiaobian learned that the engine is intake, compression, combustion, exhaust four strokes as a cycle, the pressurized engine is the air pressure into the cylinder, intake, filtered air into the turbocharger compressor machine, after compression through the intake pipe into the cylinder.Exhaust time, after the burning gas, through the exhaust pipe, excavator accessories turbocharger turbine, through a discharge silencer, turbine exhaust driven by high-speed rotation, and direct drive compressor impeller, compression of fresh air, fresh air is 2-3 times higher than the atmospheric pressure pressed into the cylinder, at the same time, due to the volume increased dramatically, diesel burn more fully,Improved fuel economy.
How does it work?

Excavator parts in turbine work speed of up to tens of thousands of RPM to 200000 RPM, to ensure the effective work of the rotor, the booster has embraced a floating bearing system, from the diesel engine main oil duct flow of pressure oil through the oil hole in the middle of the booster, enter the turbocharger oil duct, floating bearing under the effect of lubricating oil pressure and the rotation of the rotor,An oil film is formed on its inner and outer surfaces to make the rotor, bearing and bearing seat work in a non-contact state.At the same time, due to the rotation of the floating bearing, the relative speed of the shaft, the floating bearing and the bearing seat are reduced, and the working temperature of the excavator accessories turbine reaches 500-700 degrees. The oil reduces the temperature while lubrication, taking away a lot of heat.By gravity, the oil flows through the return hole of the intermediate. The return pipe is usually designed as a vertical pipe.It is communicated with the crankcase of the diesel engine, so that the lubricating oil naturally flows back to the oil pan.
turbocharger
The following conditions are easy to cause damage to the turbocharger
I. Foreign bodies enter the turbocharger of excavator accessories, and the end face of the compressor wheel is damaged by foreign bodies. Foreign bodies enter the compressor wheel from the intake pipe or air filter may be caused by the following circumstances, such as: ① the inlet pipe is poorly sealed and does not go through air filter.(2) not according to the specified time to replace, clean the air filter element.(3) through the exhaust manifold into the volute, the internal parts of the diesel engine cylinder are damaged, blown out with the exhaust, or the installation of the exhaust manifold does not pay attention to, there are foreign bodies into the.
Two. Not in accordance with the provisions of the use of oil and machine filter, substandard lubricating oil into the supercharger will lead to shaft, bearing, bearing hole wear, damage to the dynamic balance of the rotor.
conclusion
In order to prolong the life of the turbocharger of excavator accessories, the oil and oil filter element and air filter element of matching manufacturers must be used.It is forbidden to stop the machine suddenly after the driver operates the machine under heavy load.Sudden stop will generate regenerative heat, resulting in overheating of the rotor and bearing, causing coking damage to the supercharger.In addition, no idle running after boot, immediately load operation.Will affect the service life of the turbocharger.