Matters needing attention when using turbocharger

Update:04-03-2021
Summary:

  Working environment The turbocharger is the exha […]

 

Working environment

The turbocharger is the exhaust gas discharged from the turbine driven by the engine. It is an advanced mechanical device. Because its working environment often works at high speed and high temperature, the temperature of the exhaust turbine side of the turbocharger is above 600 degrees. The speed of the supercharger is also very high, so in order to ensure the normal operation of the supercharger, it is very important to use and maintain it correctly. Mainly we should follow the following methods:

You can't just drive

Especially in winter, after the engine is started, it is best to let it idle for a period of time so that the lubricant can fully lubricate the bearings before the turbocharger rotor runs at high speed. When you first use it, please be careful not to hit the accelerator hard to avoid damaging the oil seal of the turbocharger. As you can imagine, this process is a lubricant.

Don't shut down the engine immediately

After starting a long high-speed operation (such as running out of high-speed), you should enter the server to rest instead of shutting it down immediately. The reason is that when the engine is working, part of the oil is supplied to the turbocharger rotor bearings for lubrication and cooling. After the engine suddenly stops running, the oil pressure quickly drops to zero, the turbocharger turbine diffuses to the middle of the high temperature, the heat of the bearing shell cannot be quickly taken away, and the turbocharger rotor is still under the action of high-speed inertia, so if it stops suddenly , The engine's thermal conditions will cause the turbocharger to stay in the oil overheating, and damage the bearings and shaft. It is best to idle for 3-5 minutes before shutting down.

Therefore, it can be seen that after high-speed operation, idling operation for 3-5 minutes will reduce the temperature of the turbocharger.

During routine inspections, special attention should be paid to cleaning (cleaning during disassembly), lubrication, and other matters such as checking the connections of various pipes. For ordinary drivers, these things may be a little more complicated, but when maintaining them, be sure to let the host take a look.

Choose oil carefully

Due to the function of the turbocharger, the air quality and volume entering the combustion chamber are greatly improved, the engine structure is more compact and reasonable, and the compression ratio is higher, which makes the engine work more intense. The processing accuracy is also higher, and the requirements for assembly technology are more stringent. All these determine the high temperature, high speed, high power, high torque, and low emission characteristics of the turbocharged engine. At the same time, it also determines the working conditions of the internal parts of the engine to withstand higher temperatures and greater impact, compression and shear forces. Therefore, when choosing turbocharged car engine oil, it is necessary to consider its particularity. The oil used must have good wear resistance, high temperature resistance, rapid formation of lubricating oil film, high oil film strength and good stability. However, synthetic oil or semi-synthetic oil can only meet this requirement, so in addition to the best use of the original factory-specified engine oil, synthetic oil, semi-synthetic oil and other high-quality lubricants can also be selected.

Keep the oil clean

Turbocharged engines also require a lot of oil and must be kept clean. In addition, if the engine oil has deteriorated, please replace it in time. Otherwise, the lubrication capacity of the oil will decrease, which will cause insufficient lubrication and damage to the turbocharger bearings, increase maintenance costs, and even lead to the premature obsolescence of the turbocharger.

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