Precautions for using turbocharger

2023-04-26


Work environment

Turbocharger is an advanced mechanical device that utilizes exhaust gas emitted by an engine driven turbine. Due to its frequent working environment at high speeds and temperatures, the temperature at the exhaust turbine side of the turbocharger is above 600 degrees Celsius, and the speed of the turbocharger is also high. Therefore, in order to ensure the normal operation of the turbocharger, it is very important to use and maintain it correctly. The main methods we should follow are:

 

You can't just drive there

Especially in winter, after starting the engine, 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. At the beginning of use, please be careful not to forcefully hit the accelerator to avoid damaging the supercharger oil seal. As you can imagine, this process is a lubricant.

 

Do not shut down the engine immediately

After starting a long period of high-speed operation (such as running out of high-speed), you should enter the server to rest, rather than immediately shut down. The reason is that when the engine is operating, a portion 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, and the turbocharger turbine diffuses to the middle of the high temperature. The heat from the bearing housing cannot be quickly taken away, while the turbocharger rotor is still under high-speed inertia. Therefore, if the engine suddenly stops, the engine's thermal condition will cause the turbocharger to stay in the oil and overheat, damaging the bearings and shafts. Idle for 3-5 minutes before shutting down.

 

Therefore, it can be seen that idling for 3-5 minutes after high-speed operation 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 slightly more complex, but when maintaining them, be sure to let the host take a look.

 

Carefully select oil

Due to the role of the turbocharger, the quality and volume of air entering the combustion chamber have been greatly improved. The engine has a more compact and reasonable structure, with a higher compression ratio, resulting in a higher working intensity of the engine. The machining accuracy is also higher, and the requirements for assembly technology are also stricter. All these determine the high temperature, high speed, high power, high torque, and low emission operating characteristics of a turbocharged engine. At the same time, it also determines the operating conditions of the internal parts of the engine to withstand higher temperatures and greater impact, compression, and shear forces. Therefore, it is necessary to consider the particularity of turbocharged automotive engine oil when selecting it. The oil used must have good wear resistance, high temperature resistance, rapid formation of a lubricating oil film, high oil film strength, and good stability. Synthetic oil or semi synthetic oil can only meet this requirement. Therefore, in addition to using the engine oil specified by the original manufacturer, synthetic oil, semi synthetic oil, and other good lubricating oils can also be selected.

 

Keep the oil clean

Turbocharged engines also require a large amount of oil and must be kept clean. In addition, if the oil deteriorates, please replace it in a timely manner. Otherwise, the lubricating capacity of the engine oil will decrease, which will lead to insufficient lubrication and damage of the turbocharger bearings, increase maintenance costs, and even lead to premature obsolescence of the turbocharger.

 

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