How to maintain the turbocharger（Part 1）
How a turbocharger works：
The working principle of the turbocharger is actually not complicated. In simple terms, it pushes the turbine to run through the exhaust gas emitted by the engine, and then drives the turbofan connected to the same connecting shaft through the turbine, continuously feeding the engine cylinder. Fresh air is pressed into the cylinder, so that the more air the cylinder enters per unit time, the higher its working efficiency.
The turbocharger is a high temperature component, because the gas driving it is directly from the exhaust gas discharged from the cylinder, and the temperature is as high as 900°C-1000°C, and under full load, the speed of the turbine can reach 180,000-20 per minute. Ten thousand turns. The turbine needs to run at such a high speed at such a high temperature, and naturally requires particularly efficient and stable lubrication conditions. Moreover, when working in a high temperature and high pressure environment, the various parts of the supercharger and the lubricating oil must have good high temperature resistance and sealing performance. Therefore, we should start from the following aspects for its maintenance:
1. The choice of oil
Many car owners do not know how to choose when changing their oil. The damage to the turbocharger is generally the damage of the oil seal between it and the intake pipe, resulting in large-scale oil burning. The professional investigation found that a large part of the damage to the oil seal was because the owner did not change the oil on time, or used inferior oil, which caused the floating turbine main rotating shaft to not lubricate and dissipate normally, thus damaging the oil seal at high temperature and causing oil leakage .
Therefore, it is recommended that the turbocharged engine should choose high-quality oil with high temperature resistance and oxidation resistance, and pay attention to appropriately shorten the oil replacement cycle.
2. Pay attention to keep the turbine clean
The matching clearance between the turbocharger shaft and the shaft sleeve is very small, so if the oil used is not clean or impurities enter due to the unclean oil filter, it will cause excessive wear of the turbocharger. In addition, if the inhaled air contains a large amount of impurities, once these dust particles enter the supercharger impeller running at high speed, the dust particles will hit the supercharger impeller, resulting in unstable operation of the turbine, wear of the shaft sleeve and seal, so Special attention should be paid to replacing the oil filter and air filter in time to keep the turbo clean.
