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中文简体Burning oil is almost a pain point for most drivers, but no car can escape the fate of oil consumption, and "excessive" oil consumption will cause serious damage to the engine. One of the main culprits of "excessive" consumption of oil is the turbocharger oil. So, why is the supercharger pumping oil?
First of all, we need to understand that not all oil consumption is called burning oil. Because the engine itself cannot fundamentally eliminate the consumption of oil. It is like a greasy plate or bowl, if you scrape it with a spoon or even a knife, the oil will never be scraped clean. This is the same as the oil ring on the piston, which will never scrape the oil on the cylinder wall.
Reason 1: Insufficient lubrication, causing the supercharger to fail
Today we mainly talk about the "channeling oil" caused by the damage of the turbocharger itself. First, for experienced drivers, it is common to wait a minute or two before turning off the vehicle. However, the novice simply turns off the engine, but it does not know that this will cause chronic damage to the turbocharger. When the turbocharger is running at high speed, the speed easily exceeds tens of thousands of revolutions. The turbine rotor shaft in the middle is a precision component that needs to bear tens of thousands of revolutions and high temperature. The function of the oil is to establish an oil film between the rotor shaft and the casing, so as to achieve the effect of lubrication and heat dissipation.
When the diesel engine is working normally, the supercharger crystal speed and temperature are extremely high. If the engine is directly turned off, the oil pump will stop working directly, and the supercharger has a slow-speed process, and the intermediate casing and rotor shaft will appear semi-dry friction, which can easily lead to early signs of wear and tear of the turbocharger. As a result, the rotor shaft and oil seal are damaged, resulting in the phenomenon of oil blowing in the supercharger.
Reason 2: The oil is not clean and the supercharger is worn
If the impurity density in the oil is too high, the hard particles in it will scratch the casing and seal rings, resulting in early damage to the turbocharger. If the rotor shaft appears and the oil seal wears early, the high-speed turbocharger will directly take the oil out of the casing, or even enter the engine directly from the intake system to participate in the combustion, resulting in a drop in power and blue smoke in the vehicle. As for the situation, we will talk about the harm later.
Reason 3: Excessive resistance of intake and exhaust leads to oil leakage
During the inspection and maintenance process, we may have seen the phenomenon that the front end of the intake pipe is "sucked". In fact, this phenomenon is also one of the reasons why the turbocharger leaks oil. Excessive engine intake or exhaust resistance can cause a vacuum to momentarily form between the compressor and turbocharger housing. If the oil seals show signs of early wear, the oil can easily be "sucked out" to the compressor (intake side) position, where it enters the engine directly through the intercooling system.
Under normal circumstances, if the turbocharger is blowing oil, it can be judged by observation. If the turbocharger seriously leaks oil, it will directly take away a large amount of oil, and even the case where the oil is drained in minutes has also occurred. etc. phenomenon. In the process of our daily car maintenance, there are many small faults that can be completely solved through daily inspection and maintenance. But many people have neglected some aspects, resulting in more losses than gains. Although trucks are not as delicate as sedans, even Transformers have their time to lie down. The car is like a friend around you. If you treat him well, he will never give you the chain at the critical moment.
