How to remove carbon deposits from turbines?

For the topic of carbon deposition, many car owners are more or less "panic". Indeed, since the new car landed, carbon deposits began to accumulate slowly in the engine. Obviously, the power is decreasing every year, the fuel consumption is increasing every year, and the exhaust gas can't meet the standard every year. To make matters worse, the engine can be heard jingling.

This is the problem caused by carbon deposition. Throttle cleaning and in-cylinder visual cleaning are effective methods to remove carbon deposits.

However, the carbon deposits in some parts of the engine cannot be cleaned by the above two methods. Carbon deposition here will not only lead to insufficient power and accelerated vibration, but also lead to chronic diseases such as long-term high temperature damage of engine compartment. What's going on here?

Throttle carbon removal is invalid.

Check the high-speed jitter here.

The problem of carbon deposition here is also closely related to the throttle, which will directly lead to carbon deposition in the throttle. Many car owners should pay attention to cleaning up carbon deposits when they encounter poor acceleration and idling jitter. Especially in the process of low-speed driving and idling, the throttle opening is very small, which is very sensitive to carbon deposition and easily leads to jitter and insufficient power.

However, in the process of high-speed driving, the influence of throttle opening caused by carbon deposition on air intake is greatly reduced. When the throttle is high, slight carbon deposition will not hinder the intake of the engine, so there will be no excessive acceleration performance. At this time, if you find that there are still problems such as poor acceleration, no matter how you pump the bottle or clean the throttle, it will not be of much help to the power.

This problem stems from the carbon deposit in the vehicle turbocharger. As an engine intake supercharger, as we said not long ago, the failure of turbine sometimes even leads to the reduction of fuel consumption.

The turbine damaged by carbon deposit will only make the owner wonder. Turbine does not drink gasoline and does not participate in engine combustion. Usually only waste gas and compressed air pass through, but why does carbon deposit appear?

Causes of carbon deposition in turbocharger

If it is serious, it will be scrapped.

This is because our engine has a "hidden" system-crankcase ventilation system.

With or without a turbine, most engines actually have this system. It can transport the mixed oil and gas in the crankcase to the intake manifold during the engine combustion process, and mix with the fresh air inhaled by the next engine, which can improve the engine power, relieve the crankcase pressure and avoid danger.

Just because the intake manifold of naturally aspirated engine has vacuum suction, the oil and gas in the crankcase can be sucked out of the pipeline by itself.

Turbocharged engines are completely different. The intake manifold of turbocharged engine is in a "positive pressure" state, and only the oil and gas output pipe can be directly connected to the front end of turbocharger. In this way, when the turbine works, it can also generate strong suction force to pump out the gas in the crankcase.

In terms of design, there are actually no major defects. Oil-gas mixing is not only efficient, but also has a certain lubricating effect on steam turbines (because it is oil vapor). Only in the case of poor air quality, oil and gas impurities mixed with various pollutants will accumulate on turbine blades working at high temperature, eventually causing carbon deposition.

After the carbon deposition fault of steam turbine, the dynamic balance will fail, leading to wear and scrap. If it can be found earlier, if the oil seal is replaced, disassembled and cleaned, there is still room for repair. If it is worn and stuck, it may need to be replaced. But whether it is maintenance or replacement, it is actually very expensive.

Don't worry too much about turbine carbon deposition.

You can easily deal with it by doing two steps.

Many turbine owners here may be surprised. What if my turbine will accumulate carbon in the future?

Actually, don't worry too much. Only because of the different reasons of carbon deposition in engine and throttle, turbine does not directly participate in the combustion of gasoline mixture. The carbon deposition rate of turbines is very slow. It is conservatively estimated that within 7~8 years or even 6.5438+0.5 million kilometers, even if carbon deposit is found in engine oil, the power drop caused by turbine will not be obviously felt. Observe the sludge on the automobile turbine through an endoscope.

The source of turbine carbon deposit is the mixture in crankcase and the natural air filtered by air filter, and oil is also used for self-lubrication. Therefore, in order to reduce the generation of carbon deposits in the steam turbine, we should first replace the air filter on time to prevent impurities such as dust from entering the high-speed rotating steam turbine, and then do minor maintenance regularly to keep the oil lubricated and clean.

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